compressor

Abstract

The application provides a compressor, comprising a static scroll disc and a sound elimination assembly, the sound elimination assembly comprising a first cover part and a second cover part, the sound elimination assembly having a resonance cavity between the first cover part and the second cover part; at least one of the first cover part and the second cover part is connected with the static scroll disc, the sound elimination assembly further having a first exhaust cavity between the first cover part and the static scroll disc, the static scroll disc having an exhaust hole capable of communicating with the first exhaust cavity, the first cover part having a first through hole for communication between the first exhaust cavity and the resonance cavity, and the second cover part having a second through hole communicating with the resonance cavity. In the application, at least one of the first cover part and the second cover part is connected with the static scroll disc, so that the sound elimination assembly is fixed on the static scroll disc, the overall structure is simplified, and assembly is more convenient.

Description

Technical Field

[0001] This application relates to a compressor, and more particularly to a noise reduction structure for a compressor. Background Technology

[0002] The compressor includes a stationary scroll plate and a moving scroll plate. When the moving scroll plate rotates in translational motion, the closed gas chamber formed by the moving scroll plate and the stationary scroll plate rotates simultaneously and its volume decreases, compressing the gas. When the gas is compressed to a certain pressure, it is discharged through the small hole on the stationary scroll plate, realizing the circulation and refrigeration function of the refrigeration system.

[0003] In a compressor, when compressed gas rushes out of the small holes on the stationary scroll plate, pressure pulsations and noise are generated, affecting performance. Related technologies incorporate a silencer within the compressor to reduce sound wave energy and aerodynamic noise. However, this method involves fixing the silencer to a partition inside the compressor housing, requiring a separate partition to be installed at the exhaust port of the stationary scroll before assembling and securing the silencer. The overall structure is complex and inconvenient to assemble. Summary of the Invention

[0004] This application aims to provide a compressor that simplifies the overall structure and reduces assembly difficulty.

[0005] To achieve the above objectives, this application provides a compressor, including a stationary scroll plate and a noise reduction assembly, wherein the noise reduction assembly includes a first cover component and a second cover component, and the noise reduction assembly has a resonant cavity located between the first cover component and the second cover component;

[0006] At least one of the first cover component and the second cover component is connected to the static vortex disk. The first cover component is located between the second cover component and the static vortex disk. The silencing assembly also has a first exhaust chamber located between the first cover component and the static vortex disk. The static vortex disk has an exhaust hole that communicates with the first exhaust chamber. The first cover component has a first through hole that communicates with the first exhaust chamber and the resonant cavity. The second cover component has a second through hole that communicates with the resonant cavity.

[0007] The compressor provided in this application has a noise reduction assembly including a first cover component and a second cover component. The sound vibration is weakened by the resonant cavity between the first cover component and the second cover component to reduce noise. At least one of the first cover component and the second cover component is connected to the stationary scroll plate, and the noise reduction assembly is fixed to the stationary scroll plate, which simplifies the overall structure and makes assembly easier. Attached Figure Description

[0008] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0009] Figure 1 This is a front view of the exhaust cover, static scroll plate, and muffler assembly of a compressor provided in this application;

[0010] Figure 2 yes Figure 1 AA-direction cross section;

[0011] Figure 3 yes Figure 1 Exploded view;

[0012] Figure 4 This is a perspective view of a compressor's stationary scroll plate and a noise reduction assembly provided in this application;

[0013] Figure 5 yes Figure 4 Top view;

[0014] Figure 6 yes Figure 5 BB-direction cross-section;

[0015] Figure 7 This is a perspective view of the stationary scroll plate of a compressor provided in this application;

[0016] Figure 8 This is a perspective view of a noise reduction assembly for a compressor provided in this application;

[0017] Figure 9 This is a perspective view of a first cover component of a compressor provided in this application;

[0018] Figure 10 This is a perspective view of a second cover component of a compressor provided in this application;

[0019] Figure 11 This is a perspective view of a compressor provided in this application;

[0020] Figure 12 This is a cross-sectional view of a compressor provided in this application. Detailed Implementation

[0021] To better understand the technical solution of this application, the embodiments of this application will be described in detail below with reference to the accompanying drawings.

[0022] It should be understood that the described embodiments are merely some, not all, of the embodiments in this application. All other embodiments obtained by those skilled in the art based on the embodiments in this application without inventive effort are within the scope of protection of this application.

[0023] In related technologies, fixing the muffler to a partition inside the compressor housing requires a separate partition to be installed at the exhaust port of the stationary scroll plate before assembling and fixing the muffler. This results in a complex overall structure that is inconvenient to assemble. To simplify the overall structure and reduce assembly difficulty, this application proposes a compressor. Please refer to [link to relevant documentation]. Figures 4 to 10 The system includes a stationary vortex disk 1 and a noise reduction assembly 2. The noise reduction assembly 2 includes a first cover component 21 and a second cover component 22. The noise reduction assembly 2 has a resonant cavity 20 located between the first cover component 21 and the second cover component 22. At least one of the first cover component 21 and the second cover component 22 is connected to the stationary vortex disk 1. The first cover component 21 is located between the second cover component 22 and the stationary vortex disk 1. The noise reduction assembly 2 also has a first exhaust cavity 200 located between the first cover component 21 and the stationary vortex disk 1. The stationary vortex disk 1 has an exhaust hole 11 that can communicate with the first exhaust cavity 200. The first cover component 21 has a first through hole 210 for communicating with the first exhaust cavity 200 and the resonant cavity 20. The second cover component 22 has a second through hole 220 that communicates with the resonant cavity 20. In this embodiment, at least one of the first cover component and the second cover component is connected to the static vortex disk, and the noise reduction component is directly fixed to the static vortex disk, which simplifies the overall structure and makes assembly easier.

[0024] To reduce the processing difficulty of the noise reduction assembly, in this application, the first cover component 21 and the second cover component 22 can be connected to the stationary vortex disk 1 respectively, simplifying the overall structure of the noise reduction assembly 2 and facilitating the processing of the first cover component 21 and the second cover component 22, thus reducing the processing difficulty. In some embodiments, the noise reduction assembly 2 adopts a double-layer structure, having two cover components and a resonant cavity 20, such as... Figure 2 and Figure 6 As shown. Of course, in some other embodiments, the silencing component 2 can also adopt a structure with more than three layers, having more than three cover components and more than two resonant cavities 20. However, more layers of the silencing component 2 will increase the volume, affect the overall efficiency of the compressor, and increase the damping, resulting in untimely exhaust and pressure drop. In this application, the first cover component 21 and the second cover component 22 can be connected to the stationary scroll plate 1 in various ways, and the connection method is not limited. In some embodiments, the first cover component 21, the second cover component 22 and the stationary scroll plate 1 can be assembled separately, and the processing accuracy and assembly accuracy of the separate parts meet the design requirements. For details, please refer to the following again. Figure 4The compressor also includes a connector 14, wherein the first cover component 21 and / or the second cover component 22 are connected to the stationary scroll plate 1 via at least one connector 14, wherein... Figure 4 Only one connector 14 is shown in the diagram; the other multiple connectors 14 are shown in... Figure 4 Not illustrated in the diagram. In some specific embodiments, the connector 14 is a bolt; of course, in other embodiments, the first cover component 21 and the second cover component 22 can also be integrated with the stationary scroll plate 1. The method of obtaining the integrated component is not specifically limited; it can be obtained through one or a combination of welding, casting, powder metallurgy, metal powder injection molding, etc., or it can be obtained by machining after welding, casting, powder metallurgy, or metal powder injection molding, or it can be obtained directly by machining. In one specific embodiment, both are machined, so that they can be positioned on the same machine tool, ensuring the positioning accuracy of both and reducing errors.

[0025] Please refer to it again. Figure 4 and Figure 8 In other embodiments, the first cover component 21 includes a first fixing part 213 and / or the second cover component 22 includes a second fixing part 223, and the first fixing part 213 and / or the second fixing part 223 are connected to the stationary vortex disk 1 via a connector 14. In a specific embodiment, the connector 14 may be a bolt, and the first cover component 21 and the stationary vortex disk 1 can be connected by a number of bolts, and the second cover component 22 can be connected to the stationary vortex disk 1 by a number of bolts. The first cover component 21 and the second cover component 22 may be connected to the stationary vortex disk 1 by different bolts, or they may be connected to the stationary vortex disk 1 by the same set of bolts.

[0026] To further improve assembly convenience, in some embodiments, the first cover component 21 and the second cover component 22 are simultaneously fixed to the stationary scroll plate 1 using the connector 14, making assembly easier. For details, please refer again. Figure 4 , Figure 5 and Figure 8In this embodiment, the connector 14 simultaneously connects the first cover component 21, the second cover component 22, and the stationary vortex disk 1. Each first fixing part 213 of the first cover component 21 is arranged correspondingly to each second fixing part 223 of the second cover component 22. The correspondingly arranged first fixing parts 213 and second fixing parts 223 are distributed along the axial direction of the stationary vortex disk 1, and are connected to the stationary vortex disk 1 via the connector 14. Of course, in other embodiments, some first fixing parts 213 and second fixing parts 223 may be arranged correspondingly, that is, at least one first fixing part 213 and one second fixing part 223 may be arranged correspondingly. In this case, the corresponding first fixing parts 213 and second fixing parts 223 can be simultaneously connected to the stationary vortex disk 1 using at least one connector 14, while the uncorresponding first fixing parts 213 and second fixing parts 223 can be connected to the stationary vortex disk 1 separately using connectors 14. In a specific embodiment, such as... Figure 4 As shown, both the first fixing part 213 and the second fixing part 223 have mounting holes, and the mounting holes of the correspondingly arranged first fixing part 213 and the second fixing part 223 are arranged in a corresponding manner to cooperate with the connector 14 to connect with the stationary vortex disk 1.

[0027] Please refer to it again. Figure 4 , Figure 5 ,as well as Figures 8 to 10 In some embodiments, the first fixing part 213 and the second fixing part 223 are arranged side by side, i.e., distributed along the axial direction of the stationary vortex disk 1. Specifically, the second cover component 22 also includes a second through groove 225, each second through groove 225 corresponding to each second fixing part 223. The correspondingly arranged second through grooves 225 and second fixing parts 223 are distributed along the axial direction of the stationary vortex disk 1, and the first fixing part 213 passes through the second through groove 225. In this embodiment, the first fixing part 213 extends through the second through groove 225, and the corresponding first fixing parts 213 and second fixing parts 223 in the same group can be simultaneously connected to the stationary vortex disk 1 using the connector 14, which facilitates assembly. In some other embodiments, the second through slot 225 may be partially arranged in correspondence with the second fixing part 223; the corresponding second through slot 225 and the second fixing part 223 may also be arranged side by side. In this case, the first fixing part 213 and the second fixing part 223 are arranged side by side, and the first fixing part 213 and the second fixing part 223 need to be connected to the stationary vortex disk 1 by the connector 14 respectively.

[0028] Please refer to it again. Figures 6 to 10In some embodiments, the first cover component 21 includes a first end cover portion 211, and the second cover component 22 includes a second end cover portion 221. The first end cover portion 211 and the second end cover portion 221 are distributed along the axial direction of the stationary vortex disk 1. The first end cover portion 211 has a first through hole 210. In this embodiment, there are two or more first through holes 210, and the first through holes 210 are evenly distributed. The resonant cavity 20 includes a first chamber 20a. The side of the first end cover portion 211 facing the first chamber 20a has a first end face 211a, and the side of the second end cover portion 221 facing the first chamber 20a has a second end face 221a. The first end face 211a and the second end face 221a are parallel. The distance between the first end face 211a and the second end face 221a is the thickness of the air layer in the first chamber 20a along the axial direction of the stationary vortex disk 1, and this thickness is denoted as M. Of course, in some other embodiments, the first end face 211a and the second end face 221a can also be spherical, and preferably their centers coincide. In this case, the thickness of the air layer in the first chamber 20a along the radial direction of the first end face 211a is denoted as M. In a specific embodiment, M = L, and L satisfies formula (a).

[0029]

[0030] Wherein, f0 is the natural frequency of the exhaust cover 3 in Hz, n is a positive number; c is the speed of sound in m / s; where the speed of sound c is a calculated value, obtained by calculating the speed of sound of the noise under the operating condition using REFPROP refrigerant property software based on the refrigerant and operating temperature; p is the perforation rate of the silencing part 2100; t is the average thickness of the silencing part 2100 in meters; and d is the average aperture of the first through hole 210 in meters. The silencing part 2100 includes a first end cap 211 and a first side baffle 212. In this embodiment, using n*f0 as the target noise frequency allows for more accurate noise reduction targeting the natural frequency of the exhaust cover 3, especially when n=1, resulting in better noise reduction. Of course, in other embodiments, the target noise frequency can also be other frequencies that require noise reduction.

[0031] In some embodiments, the first cover component 21 and the second cover component 22 adopt a cover structure. For details, please refer to [link to relevant documentation]. Figures 8 to 10The first end cap 211 has a first side stop 212 on the side facing the stationary vortex disk 1. In some embodiments, the first side stop 212 extends along the axial direction of the stationary vortex disk 1; of course, it can also be inclined. The second end cap 221 has a second side stop 222 on the side facing the stationary vortex disk 1. In some embodiments, the second side stop 222 extends along the axial direction of the stationary vortex disk 1; of course, it can also be inclined. The resonant cavity 20 also includes a second chamber 20b, which is located between the first side stop 212 and the second side stop 222. In a specific embodiment, the first fixing part 213 is connected to the first side stop 212, and the second fixing part 223 is connected to the second side stop 222. Both the first fixing part 213 and the second fixing part 223 are perpendicular to the axial direction of the stationary vortex disk 1 for easy assembly. In this embodiment, the average thickness of the air layer in the second chamber 20b along the direction perpendicular to the axis of the static vortex disk 1 is N. In a specific embodiment, N = L, where L satisfies the above formula (a). In this embodiment, using n*f0 as the target noise frequency can more accurately reduce noise at the inherent frequency of the exhaust cover 3. Of course, in other embodiments, the target noise frequency can also be other frequencies that need to be reduced. In some embodiments, the first side baffle 212 and the second side baffle 222 have the same contour, so that the interlayer (air layer in the second chamber 20b) between them has a uniform thickness, that is, the thickness of the air layer in the second chamber 20b is consistent everywhere, and the thickness of the air layer in the second chamber 20b is the same as the thickness of the air layer in the first chamber 20a.

[0032] In some embodiments, the first side baffle 212 has a first through hole 210. By adding a first through hole 210 to the first side baffle 212, the sound-absorbing area can be increased. In this embodiment, there can be one or more first through holes 210; the second side baffle 222 has a second through hole 220. In a specific embodiment, the first through holes 210 of the first side baffle 212 and the second through holes 220 of the second side baffle 222 are arranged alternately, so that the sound waves will not escape directly through the second through hole 220 of the second side baffle 222 after passing through the first through hole 210 of the first side baffle 212, but will form a sufficient reflection and rebound area to achieve a better sound-absorbing effect. In this embodiment, there can be one or more second through holes 220.

[0033] In specific embodiments, the distribution position of the first through holes 210 is not specifically limited. In some embodiments, all of the first through holes 210 are distributed in the first end cap portion 211, or all of the first through holes 210 are distributed in the first side stop portion 212. In other embodiments, some of the first through holes 210 may be distributed in the first end cap portion 211, and the other part of the first through holes 210 may be distributed in the first side stop portion 212. To reduce the size of the compressor and lower the height of the muffler assembly 2, in a specific embodiment, please refer to... Figure 8 Both the first end cap 211 and the first side stop 212 are provided with first through holes 210. The first end cap 211 has more openings, while the first side stop 212 has fewer openings, meaning the number of first through holes 210 in the first end cap 211 is greater than the number of first through holes 210 in the first side stop 212. This reduces the height requirement for the first side stop 212, meeting the compact size requirements of the compressor, especially for the relatively compact size requirements of vehicle-mounted electric compressors.

[0034] The first end cap 211, as the main resonant surface with multiple first through holes 210, has higher requirements for the average thickness M of the air layer in the corresponding first chamber 20a. Preferably, it satisfies the above formula (a), making M = L, to obtain a more precise noise reduction effect for f0. In this embodiment, using n*f0 as the target noise frequency can more accurately reduce noise at the natural frequency of the exhaust cover 3. Of course, in other embodiments, the target noise frequency can also be other frequencies that need to be reduced. When the average thickness N of the air layer in the second chamber 20b also satisfies formula (a), that is, when N = L, the noise reduction effect for f0 can be better improved. In particular, when the air layer in the second chamber 20b adopts a uniform thickness, the noise reduction effect for the target noise frequency can be better improved; and using n*f0 as the target noise frequency can more accurately reduce noise at the natural frequency of the exhaust cover 3. Of course, in other embodiments, the target noise frequency can also be other frequencies that need to be reduced. When the average thickness N of the second chamber 20b does not meet the thickness L, the noise reduction effect on the target noise frequency decreases, but the overall noise reduction frequency range can be expanded.

[0035] Please refer to it again. Figure 9 and Figure 10In some embodiments, both the first through hole 210 and the second through hole 220 are circular holes, and the diameter of the second through hole 220 is not smaller than the diameter of the first through hole 210. This can reduce the pressure drop caused by untimely exhaust due to excessive damping. In addition, since friction is generated when gas is discharged through the first through hole 210 and the second through hole 220, if the first through hole 210 and the second through hole 220 are square or other non-circular holes, stress concentration will occur, making the muffler component 2 prone to damage and reducing its durability. In this embodiment, both the first through hole 210 and the second through hole 220 are circular holes, which can make the stress distribution more even and improve durability.

[0036] In some embodiments, each first through hole 210 maintains the same aperture to obtain a more accurate noise reduction effect for the target noise frequency. Even if the aperture is inconsistent due to processing errors, noise reduction can still be roughly achieved, but the noise reduction effect for the target noise frequency will decrease, while expanding the overall noise reduction frequency range.

[0037] Please refer to it again. Figures 6 to 9 In some embodiments, the compressor further includes an exhaust valve 12 and an exhaust valve limiting member 13. The exhaust valve 12 and the exhaust valve limiting member 13 are at least partially located in the first exhaust chamber 200. The exhaust valve 12 and the exhaust valve limiting member 13 are connected to the stationary scroll plate 1. The exhaust valve 12 is located between the stationary scroll plate 1 and the exhaust valve limiting member 13. The exhaust valve 12 is used to connect or block the exhaust port 11 with the first exhaust chamber 200. The exhaust valve 12 is used to control the opening and closing of the exhaust port 11. When the pressure of the refrigerant compression reaches a certain value, the exhaust valve 12 is forced open, and the compressed refrigerant is discharged from the exhaust port 11. The exhaust valve limiting member 13 is used to limit the opening degree of the exhaust valve 12.

[0038] Please refer to it again. Figure 4 , Figure 8 and Figure 9 In some embodiments, the muffler assembly 2 further includes a first limiting portion 214, with the exhaust valve 12 and the exhaust valve limiting member 13 located between the first limiting portion 214 and the stationary scroll plate 1. The compressor also includes a connecting member 14, through which the first limiting portion 214 is connected to the exhaust valve 12, the exhaust valve limiting member 13, and the stationary scroll plate 1. Figure 4 The connector 14 is not shown in the diagram. In this embodiment, one or more connectors 14 can be used to simultaneously fix the first limiting part 214, the exhaust valve 12, and the exhaust valve limiting part 13, facilitating assembly. Please refer to the previous section again. Figures 8 to 10 In some embodiments, the first limiting part 214 is connected to the first cover part 21, and the second cover part 22 has a first through groove 224, through which the first limiting part 214 passes; of course, the first limiting part 214 can also be connected to the second cover part 22; the first limiting part 214 extends along a direction perpendicular to the axis of the stationary vortex disk 1.

[0039] Please see Figures 1 to 3 In some embodiments, the compressor further includes an exhaust cover 3, with a second exhaust chamber 300 between the exhaust cover 3 and the stationary scroll plate 1. A noise-reducing assembly 2 is located in the second exhaust chamber 300. The exhaust cover 3 has an exhaust port 31, which communicates with the second exhaust chamber 300. A second through-hole 220 is used for communication between the resonant chamber 20 and the second exhaust chamber 300. When the refrigerant compression pressure reaches a certain value, the exhaust valve 12 is opened, and the compressed refrigerant is discharged from the exhaust port 11. After noise reduction by the first cover component 21 and the second cover component 22, it enters the second exhaust chamber 300 and is then discharged from the exhaust cover 3 via the exhaust port 31. Furthermore, in other embodiments, the second cover component 22 can also be the exhaust cover 3. In this case, the exhaust cover 3 is considered as the second cover component 22, and the exhaust port 31 is considered as the second through-hole 220. The refrigerant discharged through the exhaust port 11 enters the second exhaust chamber 300 after noise reduction by the first cover component 21 and is then discharged from the exhaust cover 3 via the exhaust port 31.

[0040] Please see Figure 11 and Figure 12 In some embodiments, the compressor further includes a housing 4, a moving scroll plate 5, a motor 6, and a drive mechanism 7. In some embodiments, the exhaust cover 3 is connected to the housing 4. The stationary scroll plate 1 and the moving scroll plate 5 are disposed in the inner cavity between the housing 4 and the exhaust cover 3. A gas compression chamber 8 is provided between the stationary scroll plate 1 and the moving scroll plate 5. The gas compression chamber 8 is connected to the exhaust port 11. The moving scroll plate 5 is connected to the drive mechanism 7. The drive mechanism 7 is driven by the motor 6. The motor 6 drives the moving scroll plate 5 to rotate through the drive mechanism 7. When the moving scroll plate 5 rotates, the gas compression chamber 8, which is composed of the moving scroll plate 5 and the stationary scroll plate 1, rotates simultaneously and its volume decreases, compressing the gas. When the gas is compressed to a certain pressure, it is discharged through the exhaust port 11 on the stationary scroll plate 1, and then passes through the first cover component 21 and the second cover component 22 in sequence to reduce noise, and finally is discharged through the exhaust cover 3.

[0041] To reduce the difficulty of adjusting the noise at the target noise frequency, this application also provides a compressor; please refer to [link to relevant documentation]. Figures 1 to 10The system includes a stationary vortex disk 1, a muffler assembly 2, and an exhaust cover 3. A second exhaust chamber 300 is located between the stationary vortex disk 1 and the exhaust cover 3. The muffler assembly 2 is located in the second exhaust chamber 300 and includes a first cover component 21 and a second cover component 22. The first cover component 21 is located between the second cover component 22 and the stationary vortex disk 1. The first cover component 21 includes a muffler part 2100. The muffler assembly 2 has a resonance chamber 20, which is located between the muffler part 2100 and the second cover component 22. The muffler part 2100 has a first through hole 210. The stationary vortex disk 1 has an exhaust hole 11. The first through hole 210 is used to connect the exhaust hole 11 and the resonance chamber 20. The second cover component 22 has a second through hole 220, which is used to connect the resonance chamber 20 and the second exhaust chamber 300.

[0042] The silencing part 2100 has a first surface 2100a on the side facing the resonant cavity 20, and the second cover part 22 has a second surface 221a on the side facing the resonant cavity 20. The average distance between the first surface 2100a and the second surface 221a is L, where L is in meters, and satisfies the following formula (a):

[0043]

[0044] Where f0 is the natural frequency of the exhaust cover 3 in Hz, n is a positive number; c is the speed of sound in m / s; where the speed of sound c is a calculated value, obtained by calculating the speed of sound of the noise under the operating condition using REFPROP refrigerant property software with refrigerant and operating temperature; p is the perforation rate of the silencing part 2100; t is the average thickness of the silencing part 2100 in m; and d is the average aperture of the first through hole 210 in m.

[0045] In this application, n*f0 is defined as the target noise frequency. The software and input parameters used to obtain the natural frequency of the exhaust cover 3 include the following:

[0046] The simulation software used is ANSYS, and the simulation method employed is the finite element method.

[0047] Input parameters include:

[0048] Physical model (STP format);

[0049] Material parameters: Material name, elastic modulus (MPa), Poisson's ratio, density (Kg / m³) 3 );

[0050] Boundary conditions: operating conditions, fixing method.

[0051] Since the compressor generates the maximum noise at the exhaust cover 3 when it is working, n*f0 is defined as the target noise frequency in this application. This frequency is used as the resonant frequency design L (L is also the average thickness of the air layer in the resonant cavity 20). This allows for more precise noise reduction at the maximum noise at the exhaust cover 3, thereby improving the noise reduction and sound attenuation effect.

[0052] In some embodiments, in formula (a), n = 2 i ,or Where i is a natural number. When n is 1, the noise reduction effect on the natural frequency of the exhaust cover 3 is better. In a specific embodiment, when the processing is difficult to meet the L calculated based on 1 times f0 as the target noise frequency, the value of the target noise frequency can be adjusted. For example, when the natural frequency of the exhaust cover 3 reaches 8552Hz, c=148.05m / s, p=0.067, t=0.001m, d=0.001m, the calculated L is 0.0028m. At this time, since the average distance L between the first surface 2100a and the second surface 221a is too small, the processing accuracy is difficult to guarantee this distance. Therefore, 2 times f0 can be used as the target noise frequency. At this time, 2 times f0=8552Hz, that is, f0=4276Hz, and the calculated L is 0.0114m, which can better guarantee this average distance during processing.

[0053] Please refer to it again. Figure 9 In some embodiments, the perforation rate of the silencing part 2100 is equal to the perforated area of ​​the silencing part 2100 divided by the effective area of ​​the silencing part 2100; the sum of the projected areas of each first through hole 210 along its axial direction is the perforated area of ​​the silencing part 2100 (i.e., the sum of the cross-sectional areas of each first through hole 210), and the effective area of ​​the silencing part 2100 is the surface area of ​​the silencing part 2100 on the side facing away from the resonant cavity 20, that is, the inner surface area of ​​the silencing part 2100 facing the first exhaust cavity 200; in some embodiments, the perforated area of ​​the silencing part 2100 is greater than or equal to the projected area of ​​the exhaust hole 11 along its axial direction (i.e., the area of ​​the cross-section of the exhaust hole 11), otherwise, untimely exhaust may occur, resulting in exhaust pulsation, causing pressure drop and additional noise problems. In a specific embodiment, the perforated area of ​​the silencing part 2100 is equal to twice the projected area of ​​the exhaust hole 11 along its axial direction, which can be 6.7%.

[0054] Please refer to it again. Figures 6 to 10In some embodiments, the silencing part 2100 includes a first end cap 211, and the second cap part 22 includes a second end cap 221. The first end cap 211 and the second end cap 221 are distributed along the axial direction of the stationary vortex disk 1. The first end cap 211 has a first through hole 210. The resonant cavity 20 includes a first chamber 20a, which is located between the first end cap 211 and the second end cap 221. The first end cap 211 has a first end face 211a on the side facing the first chamber 20a, and the second end cap 221 has a second end face 221a on the side facing the first chamber 20a. The average distance between the first end face 211a and the second end face 221a along the axial direction of the stationary vortex disk 1 is L. In a specific embodiment, when the thickness of the air layer between the first end face 211a and the second end face 221a (i.e., the thickness of the air layer in the first chamber 20a) is uneven, the noise reduction effect can be improved to a certain extent. While the precise noise reduction effect targeting the natural frequency of the exhaust cover 3 decreases, the overall noise reduction frequency range is expanded. When the thickness of the air layer in the first chamber 20a is uniform and is L, a more precise noise reduction effect targeting the natural frequency of the exhaust cover 3 can be obtained.

[0055] Please refer to it again. Figure 6 In some embodiments, the first end face 211a and the second end face 221a are parallel, and the distance between the first end face 211a and the second end face 221a along the axial direction of the static vortex disk 1 is L. That is, the distance between the first end face 211a and the second end face 221a (i.e., the thickness of the air layer in the first chamber 20a) remains uniform and is L. In this case, a more precise noise reduction effect can be obtained for the natural frequency of the exhaust cover 3.

[0056] In some embodiments, the first cover component 21 and the second cover component 22 adopt a cover structure. For details, please refer to [link to relevant documentation]. Figures 8 to 10 The silencing part 2100 also includes a first side baffle 212, which is located on the side of the first end cap 211 facing the stationary vortex disk 1 and extends along the axial direction of the stationary vortex disk 1. The second end cap 221 has a second side baffle 222 on the side facing the stationary vortex disk 1, which extends along the axial direction of the stationary vortex disk 1. The resonant cavity 20 also includes a second chamber 20b, which is located between the first side baffle 212 and the second side baffle 222. Please refer to [link to relevant documentation]. Figure 9 and Figure 10In some embodiments, the first side baffle 212 has a first side surface 212a facing the second chamber 20b, and the second side baffle 222 has a second side surface 222a facing the second chamber 20b. The average distance between the first side surface 212a and the second side surface 222a is L. This average distance is the average thickness of the air layer in the second chamber 20b, and is L. When the thickness of the air layer in the second chamber 20b is uneven, the noise reduction effect can be improved to some extent. While the precise noise reduction effect targeting the natural frequency of the exhaust cap 3 decreases, the overall noise reduction frequency range is expanded. Of course, in other embodiments, the air layer in the second chamber 20b can also have a uniform thickness. In this case, a more precise noise reduction effect targeting the natural frequency of the exhaust cap 3 can be obtained.

[0057] Please refer to it again. Figures 8 to 10 In some embodiments, the first side baffle 212 has a first through hole 210; the first through hole 210 of the first side baffle 212 can increase the sound-absorbing area. In this embodiment, there can be one or more first through holes 210. The second side baffle 222 has a second through hole 220. In a specific embodiment, the first through holes 210 of the first side baffle 212 and the second through holes 220 of the second side baffle 222 are arranged alternately, so that the sound waves will not escape directly through the second through holes 220 of the second side baffle 222 after passing through the first through holes 210 of the first side baffle 212, but will form a sufficient reflection and rebound area to achieve a better sound-absorbing effect. In this embodiment, there can be one or more second through holes 220. This application does not specifically limit the distribution location of the first through holes 210. In some embodiments, all of the first through holes 210 are distributed in the first end cap portion 211, or all of the first through holes 210 are distributed in the first side stop portion 212. In other embodiments, some of the first through holes 210 may be distributed in the first end cap portion 211, and the other part of the first through holes 210 may be distributed in the first side stop portion 212. To reduce the size of the compressor and lower the height of the muffler assembly 2, in a specific embodiment, please refer to... Figure 8 Both the first end cap 211 and the first side stop 212 are provided with a first through hole 210. The first end cap 211 has more openings, while the first side stop 212 has fewer openings. In this case, the height requirement for the first side stop 212 is lower.

[0058] In some specific embodiments, the thickness of the first end cap 211 and the first side baffle 212 can be the same, and equal to the average thickness of the silencing portion 2100. When the first end cap 211 and the first side baffle 212 are of uniform thickness, a more precise noise reduction effect targeting the natural frequency of the exhaust cover 3 can be obtained. Due to processing errors and other reasons, the thickness of the first end cap 211 and the first side baffle 212 may not be uniform. As long as their average thickness does not exceed the tolerance, it will not have a significant impact on the noise reduction effect. In addition, non-uniform thickness can obtain a wider noise reduction frequency band. Although the noise reduction effect at a specific noise reduction frequency (such as the natural frequency of the exhaust cover 3) will be reduced, the noise reduction effect is still achieved. The average thickness of the silencing portion 2100 is an empirical value. In specific embodiments, the thickness of the first end cap 211 and the first side baffle 212 is 0.001 μm, and the thickness is uniform. Of course, in some other embodiments, the second end cap 221 and the second side stop 222 may also have the same thickness and uniform thickness, which is equal to the average thickness of the silencing part 2100.

[0059] Please refer to it again. Figures 8 to 10 In some embodiments, both the first through hole 210 and the second through hole 220 are circular holes, and the diameter of the second through hole 220 is not smaller than the diameter of the first through hole 210. This structure can reduce adverse effects such as untimely exhaust and pressure drop caused by excessive damping. Furthermore, since friction is generated when gas is discharged through the first through hole 210 and the second through hole 220, stress concentration can occur if the first through hole 210 and the second through hole 220 are non-circular holes such as square holes, making the silencing component 2 prone to damage and reducing its durability. In this embodiment, both the first through hole 210 and the second through hole 220 are circular holes, which allows for more even stress distribution and improves durability. In some embodiments, the diameter of each first through hole 210 of the silencing part 2100 is the same. Due to manufacturing errors and other reasons, the diameter of the first through hole 210 may vary, resulting in a decrease in noise reduction at specific frequencies (such as the inherent frequency of the exhaust cover 3). However, the inconsistent diameter leads to a wider noise reduction frequency band, and as long as the average diameter does not exceed the tolerance, it still has a good noise reduction effect. The average diameter of the first through hole 210 is an empirical value; in the specific embodiment, the diameter of each first through hole 210 is 0.001 μm. The small diameter also increases the frequency of sound as it passes through, achieving a certain degree of noise reduction even when some noise frequencies are increased beyond the range of human hearing.

[0060] Please refer to it again. Figure 2In some embodiments, the muffler assembly 2 further includes a first exhaust chamber 200 located between the first cover component 21 and the stationary vortex disk 1. An exhaust port 11 communicates with the first exhaust chamber 200, and a first through hole 210 connects the first exhaust chamber 200 to the resonant cavity 20. The exhaust cover 3 includes an exhaust port 31 communicating with the second exhaust chamber 300, and a second through hole 220 connecting the second exhaust chamber 300 to the resonant cavity 20. In some specific embodiments, at least one of the first cover component 21 and the second cover component 22 is connected to the stationary vortex disk 1, simplifying the overall structure and facilitating assembly. Of course, in other embodiments, the first cover component 21 and the second cover component 22 can be connected to the stationary vortex disk 1 respectively, further simplifying the overall structure of the muffler assembly 2, facilitating the processing of the first cover component 21 and the second cover component 22, and reducing processing difficulty.

[0061] Please refer to it again. Figure 6 In some embodiments, the compressor further includes an exhaust valve 12 and an exhaust valve limiting member 13. The exhaust valve 12 and the exhaust valve limiting member 13 are located in the first exhaust chamber 200 and are connected to the stationary scroll plate 1. The exhaust valve 12 is located between the stationary scroll plate 1 and the exhaust valve limiting member 13. The exhaust valve 12 is used to connect or block the exhaust port 11 with the first exhaust chamber 200. The exhaust valve 12 controls the opening and closing of the exhaust port 11. When the pressure of the refrigerant compression reaches a certain value, the exhaust valve 12 is forced open, and the compressed refrigerant is discharged from the exhaust port 11. The exhaust valve limiting member 13 is used to limit the opening degree of the exhaust valve 12.

[0062] Please refer to it again. Figure 4 , Figure 8 and Figure 9 The muffler assembly 2 also includes a first limiting part 214, with the exhaust valve 12 and the exhaust valve limiting member 13 located between the first limiting part 214 and the stationary scroll plate 1. The compressor also includes a connecting member 14, through which the first limiting part 214 is connected to the exhaust valve 12, the exhaust valve limiting member 13, and the stationary scroll plate 1. Figure 4 The connector 14 is not shown in the figure. In this embodiment, one or more connectors 14 can be used to fix the first limiting part 214, the exhaust valve 12 and the exhaust valve limiting part 13 at the same time, which is convenient for assembly. The first limiting part 214 can abut against the exhaust valve 12 and the exhaust valve limiting part 13 to limit the position, making the fixation more secure.

[0063] Some of the technical implementation methods described above can be combined or replaced.

[0064] The technical principles of this application have been described above in conjunction with specific embodiments. However, it should be noted that these descriptions are merely for explaining the principles of this application and should not be construed as limiting the scope of protection of this application in any way. Based on this explanation, other specific embodiments or equivalent substitutions of this application that can be conceived by those skilled in the art without creative effort will fall within the scope of protection of this application.

Claims

1. A compressor, characterized in that, The device includes a static vortex disk and a noise reduction assembly. The noise reduction assembly includes a first cover component and a second cover component. The noise reduction assembly has a resonant cavity located between the first cover component and the second cover component. At least one of the first cover component and the second cover component is connected to the stationary vortex disk. The first cover component is located between the second cover component and the stationary vortex disk. The silencing assembly also has a first exhaust chamber located between the first cover component and the stationary vortex disk. The stationary vortex disk has an exhaust hole that communicates with the first exhaust chamber. The first cover component has a first through hole for communicating with the first exhaust chamber and the resonant cavity. The second cover component has a second through hole that communicates with the resonant cavity. The compressor also includes an exhaust valve and an exhaust valve limiting member. The exhaust valve and the exhaust valve limiting member are at least partially located in the first exhaust chamber. The exhaust valve and the exhaust valve limiting member are connected to the stationary vortex disk. The exhaust valve is located between the stationary vortex disk and the exhaust valve limiting member. The exhaust valve is used to communicate with or block the exhaust hole from the first exhaust chamber. The silencing assembly also includes a first limiting portion connected to the first cover component. The second cover component has a first through groove through which the first limiting portion passes. The first limiting part extends along a direction perpendicular to the axis of the stationary vortex disk; The exhaust valve and exhaust valve limiting member are located between the first limiting part and the stationary scroll plate. The compressor also includes a connecting member, and the first limiting part is connected to the exhaust valve, exhaust valve limiting member and stationary scroll plate through the connecting member.

2. The compressor according to claim 1, characterized in that, At least one of the first cover component and the second cover component is connected to the static vortex disk via a connector; The first cover component includes a first fixing part and / or the second cover component includes a second fixing part, and the first fixing part and / or the second fixing part are connected to the static vortex disk via a connector.

3. The compressor according to claim 2, characterized in that, Each first fixing part of the first cover component is arranged correspondingly to each second fixing part of the second cover component. The corresponding first fixing parts and second fixing parts are distributed along the axial direction of the static vortex disk. The corresponding first fixing parts and second fixing parts are connected to the static vortex disk through a connector.

4. The compressor according to claim 3, characterized in that, The second cover component also includes a second through groove, each second through groove being arranged corresponding to each second fixing part. The correspondingly arranged second through grooves and second fixing parts are distributed along the axial direction of the static vortex disk, and the first fixing part passes through the second through groove.

5. The compressor according to claim 1, characterized in that, The first cover component includes a first end cover portion, and the second cover component includes a second end cover portion. The first end cover portion and the second end cover portion are distributed along the axial direction of the static vortex disk. The first end cap portion has a first through hole; The resonant cavity includes a first chamber, the first end cap has a first end face on the side facing the first chamber, and the second end cap has a second end face on the side facing the first chamber, with the first end face and the second end face being parallel.

6. The compressor according to claim 5, characterized in that, The first end cap has a first side stop on the side facing the stationary vortex disk, and the first side stop extends along the axial direction of the stationary vortex disk. The second end cap has a second side stop on the side facing the stationary vortex disk, and the second side stop extends along the axial direction of the stationary vortex disk. The resonant cavity also includes a second chamber, which is located between the first side stop and the second side stop. The first side stop has a first through hole, and the second side stop has a second through hole. The first through hole of the first side stop and the second through hole of the second side stop are arranged alternately.

7. The compressor according to claim 1, characterized in that, Both the first through hole and the second through hole are round holes, and the diameter of the second through hole is not less than the diameter of the first through hole.

8. The compressor according to any one of claims 1 to 7, characterized in that, The compressor also includes an exhaust cover, a second exhaust chamber between the exhaust cover and the stationary scroll plate, a muffler assembly located in the second exhaust chamber, an exhaust port on the exhaust cover, the exhaust port communicating with the second exhaust chamber, and a second through hole for communicating the resonant cavity and the second exhaust chamber.

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