Electric compressor for a vehicle, air conditioning device and vehicle

Abstract

This utility model discloses an electric compressor, an air conditioning unit, and a vehicle for use. The electric compressor for vehicles includes a housing, a drive component, a stationary scroll plate, and a moving scroll plate. The housing contains an electronic control chamber, a low-pressure chamber, and a high-pressure chamber. The stationary scroll plate includes a first plate body and first scroll blades. The first scroll blades are disposed on the first plate body. The first plate body has an exhaust port and a silencing channel. The exhaust port communicates with the high-pressure chamber. The inlet end of the silencing channel is located on the inner peripheral wall of the exhaust port, and the silencing channel is formed as a blind hole structure. The electric compressor for vehicles designed according to this utility model has a silencing channel on the exhaust port side, which can reduce the pressure pulsation level of the discharged gas, eliminate high-frequency noise generated during the exhaust process, and improve the noise of the electric compressor.

Description

Technical Field

[0001] This utility model relates to the field of vehicles, and in particular to an electric compressor, air conditioning equipment and vehicle for use in vehicles. Background Technology

[0002] In related technologies, electric compressors are the core components of automotive refrigeration systems. In some existing technologies, when an electric compressor is working, the refrigerant enters the compression section from the intake port, and is compressed by the relative motion of the moving scroll and the stationary scroll, which causes a change in the volume of the compression chamber. Finally, the high-pressure refrigerant is discharged through the exhaust port of the stationary scroll. During the compression and discharge of the refrigerant, high-frequency noise is generated and resonates with the cavity mode of the space it is in, causing noise problems. Utility Model Content

[0003] This invention aims to solve at least one of the technical problems existing in the prior art. Therefore, one objective of this invention is to provide an electric compressor for vehicles. The electric compressor for vehicles designed according to this invention has a silencing channel on its exhaust port side, which can reduce the pressure pulsation level of the exhaust gas, eliminate high-frequency noise generated during exhaust, and improve the noise level of the electric compressor.

[0004] This utility model also proposes an air conditioning device having the above-mentioned electric compressor for vehicles.

[0005] This utility model also proposes a vehicle having the above-mentioned electric compressor or air conditioning equipment.

[0006] The electric compressor for vehicles according to this utility model includes: a housing, wherein an electronic control chamber, a low-pressure chamber, and a high-pressure chamber are provided inside the housing, and an electronic control component is provided inside the electronic control chamber; a drive component, wherein the drive component is located in the low-pressure chamber, the drive component includes a motor and a crankshaft, the motor cooperates with the crankshaft to drive the crankshaft to rotate, and the electronic control component is connected to the motor to control the operating state of the motor; a stationary scroll, wherein the stationary scroll includes a first disk body and a first scroll blade, the first scroll blade is located in the first disk body, the first disk body has an exhaust port and a silencing channel, the exhaust port communicates with the high-pressure chamber, the inlet end of the silencing channel is located on the inner peripheral wall of the exhaust port, and the silencing channel is formed as a blind hole structure; and a moving scroll, wherein the moving scroll includes a second disk body and a second scroll blade, the second scroll blade is located in the second disk body, the first scroll blade and the second scroll blade mesh to define a compression chamber, the compression chamber communicates with the exhaust port, and the second disk body is adapted to rotate under the drive of the crankshaft.

[0007] According to this utility model, an electric compressor for vehicles has a silencing channel on the exhaust port side to form a 1 / 4 wavelength silencing structure, which can effectively reduce gas pressure pulsation during the exhaust process of the scroll compressor, weaken the aerodynamic excitation force, and thus reduce exhaust fluid noise. By opening a silencing channel on the exhaust port side, high-frequency noise generated during the exhaust process is eliminated, thereby effectively reducing the pressure pulsation level of the exhaust gas and improving the noise of the electric compressor and the whole vehicle.

[0008] According to some embodiments of this utility model, in the height direction of the static vortex disk, the depth of the silencing channel is H1, and in the radial direction parallel to the crankshaft, the maximum length of the silencing channel is h, and the silencing channel satisfies: h > H1.

[0009] According to some embodiments of this utility model, the noise reduction channel satisfies: Where n is a natural number (0, 1, 2, 3, 4...), c is the speed of sound of the refrigerant, and f is the target noise reduction frequency.

[0010] According to some embodiments of the present invention, in the height direction of the static vortex disk, the length of the exhaust hole is H2, where H1 / H2≤1 / 3.

[0011] According to some embodiments of the present invention, the length of the silencing channel is less than the radius of the first disc body, the depth of the silencing channel is less than the length of the exhaust hole, the depth of the silencing channel is less than the thickness of the first disc body, and the width of the silencing channel is less than the diameter of the exhaust hole.

[0012] According to some embodiments of the present invention, in the height direction of the static vortex disk, the surface of the first disk body facing away from the second disk body is provided with a groove that is recessed toward the second disk body, and the open opening of the groove facing away from the second disk body is provided with a baffle to define the noise reduction channel.

[0013] According to some embodiments of the present invention, the hardness of the baffle is not lower than the hardness of the first disc body.

[0014] According to some embodiments of the present invention, the baffle is provided with a first region, the first disc is provided with a second region, and the first region and the second region are sealed together.

[0015] According to some embodiments of the present invention, the grooves are multiple and spaced apart circumferentially along the exhaust holes, and the baffle is provided on the open side of each groove.

[0016] The following is a brief description of an air conditioning device for a vehicle according to a second aspect embodiment of the present invention.

[0017] The air conditioning device for vehicles according to the present invention includes the electric compressor for vehicles as described in any of the above embodiments. Since the air conditioning device for vehicles according to the present invention is equipped with the electric compressor for vehicles as described in the above embodiments, the operating noise of the air conditioning device for vehicles is low.

[0018] The vehicle according to a third aspect embodiment of the present invention is briefly described below.

[0019] The vehicle according to this utility model includes the electric compressor for a vehicle as described in any of the above embodiments or the air conditioning equipment for a vehicle as described in the above embodiments. Since the vehicle according to this utility model is equipped with the electric compressor for a vehicle or the air conditioning equipment for a vehicle as described in the above embodiments, the vehicle has low operating noise and a good user riding experience.

[0020] In summary, the electric compressor for vehicles according to this utility model has a silencing channel on the exhaust port side to reduce gas pressure pulsation during the exhaust process of the scroll compressor, weaken the aerodynamic excitation force, effectively reduce the pressure pulsation level of the exhaust gas, eliminate high-frequency noise generated during the exhaust process, and improve the noise of the electric compressor and the whole vehicle.

[0021] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0022] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0023] Figure 1 This is a cross-sectional view of an electric compressor according to an embodiment of the present utility model.

[0024] Figure 2 This is a structural diagram of the static vortex disk according to an embodiment of the present utility model.

[0025] Figure 3 This is a cross-sectional view of the stationary vortex disk according to some embodiments of the present invention.

[0026] Figure 4 This is a cross-sectional view of the static vortex disk according to some embodiments of the present invention.

[0027] Figure 5 This is a cross-sectional view of the static vortex disk according to some embodiments of the present invention.

[0028] Figure 6 This is a schematic diagram of the internal structure of an air conditioning device according to an embodiment of the present utility model.

[0029] Figure 7 This is a schematic diagram of the internal structure of a vehicle according to some embodiments of the present invention.

[0030] Figure 8 This is a schematic diagram of the internal structure of a vehicle according to other embodiments of the present invention.

[0031] Figure label:

[0032] 1000, Vehicles; 100, Air conditioning equipment;

[0033] 1. Electric compressor;

[0034] 10. Static vortex plate; 10a. Exhaust port; 10b. Silencing channel; 10c. Inlet end; 10d. Groove; 11. Baffle;

[0035] 20. Moving scroll; 20a. Compression chamber;

[0036] 30. Crankshaft; 40. Fasteners;

[0037] 50a. Electrical control chamber; 50b. Low-pressure chamber; 50c. High-pressure chamber; 51. Cover; 52. Low-pressure housing; 53. High-pressure housing; 54. Support;

[0038] 60. Electrical control components; 70. Motor section. Detailed Implementation

[0039] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0040] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to 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 utility model.

[0041] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0042] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0043] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0044] In related technologies, electric compressors are the core components of automotive refrigeration systems. In some existing technologies, when an electric compressor is working, the refrigerant enters the compression section from the intake port, and is compressed by the relative motion of the moving scroll and the stationary scroll, which causes a change in the volume of the compression chamber. Finally, the high-pressure refrigerant is discharged through the exhaust port of the stationary scroll. During the compression and discharge of the refrigerant, high-frequency noise is generated and resonates with the cavity mode of the space it is in, causing noise problems.

[0045] The following is for reference. Figures 1-5 This invention describes an electric compressor 1 for a vehicle according to an embodiment of the present invention.

[0046] like Figure 1As shown, the electric compressor 1 for vehicles according to this utility model includes: a housing, a drive component, a stationary scroll 10, and a moving scroll 20. The housing contains an electrical control chamber 50a, a low-pressure chamber 50b, and a high-pressure chamber 50c. An electrical control component 60 is located in the electrical control chamber 50a. The drive component is located in the low-pressure chamber 50b and includes a motor 70 and a crankshaft 30. The motor 70 cooperates with the crankshaft 30 to drive the crankshaft 30 to rotate. The electrical control component 60 is connected to the motor 70 to control the operating state of the motor 70. The stationary scroll 10 includes a first disk body and first scroll blades. The first vortex blade is disposed on the first disc body. The first disc body is provided with an exhaust port 10a and a silencing channel 10b. The exhaust port 10a is connected to the high-pressure chamber 50c. The inlet end 10c of the silencing channel 10b is located on the inner peripheral wall of the exhaust port 10a. The silencing channel 10b is formed as a blind hole structure. The moving vortex 20 includes a second disc body and a second vortex blade. The second vortex blade is disposed on the second disc body. The first vortex blade and the second vortex blade mesh to define the compression chamber 20a. The compression chamber 20a is connected to the exhaust port 10a. The second disc body is adapted to rotate under the drive of the crankshaft 30.

[0047] Specifically, during normal operation of the electric compressor 1, gaseous refrigerant enters the housing through the suction port. The moving scroll 20 and the stationary scroll 10 constitute the compression component of the electric compressor 1. The gaseous refrigerant enters the compression component and, through the meshing motion between the moving scroll 20 and the stationary scroll 10, forms high-pressure gas. The high-pressure refrigerant is discharged into the high-pressure chamber 13 of the housing through the exhaust port 10a on the stationary scroll 10, and finally leaves the electric compressor 1 through the discharge port on the housing. During the operation of the electric compressor 1, the compression work between the moving scroll 20 and the stationary scroll 10 generates periodic high-frequency noise, which affects the noise of the electric compressor 1 and the entire vehicle system.

[0048] Here, the crankshaft 30 can drive the rotating scroll 20 to rotate. At this time, the second scroll blade moves relative to the first scroll blade, and the volume of the compression chamber 20a between the first scroll blade and the second scroll blade changes continuously. The volume of the medium in the compression chamber 20a also changes continuously. In some embodiments, the exhaust port 10a is located at the center of the stationary scroll 10. The first scroll blade and the second scroll blade drive the medium to flow from the radially outer side of the stationary scroll 10 to the radially inner side of the stationary scroll 10. At this time, the medium is continuously compressed and discharged from the exhaust port 10a into the high-pressure chamber 50c.

[0049] During the process of the medium being discharged from the exhaust port 10a, there are gas pressure pulsations. In order to reduce the aerodynamic excitation, a silencing channel 10b is opened in the inner peripheral wall of the exhaust port 10a. In some embodiments, the silencing channel 10b is a closed pipe set in the inner peripheral wall of the exhaust port 10a, which is only connected to the exhaust port 10a through the inlet end 10c. When the sound wave enters the silencing channel 10b from the exhaust port 10a, the sound wave is reflected back to the exhaust port 10a by the closed end of the silencing channel 10b. The sound waves of certain frequencies cancel each other out with the sound waves of the same frequency in the exhaust port 10a due to their opposite phase, thereby achieving the purpose of silencing and reducing the noise of the exhaust fluid.

[0050] According to this utility model, the electric compressor 1 for vehicles has a silencing channel 10b on the exhaust port 10a side, forming a 1 / 4 wavelength silencing structure, which can effectively reduce the gas pressure pulsation during the exhaust process of the scroll compressor, weaken the aerodynamic excitation force, and thus reduce exhaust fluid noise. By opening the silencing channel 10b on the exhaust port 10a side, the high-frequency noise generated during the exhaust process is eliminated, thereby effectively reducing the pressure pulsation level of the exhaust gas and improving the noise of the electric compressor 1 and the whole vehicle.

[0051] In some embodiments, the static scroll 10 is located inside the housing or defines a portion of the housing.

[0052] In some embodiments, the electric compressor 1 includes a high-pressure housing 53, a low-pressure housing 52, a compression component, a motor unit 70, a bracket 54, an electrical control component 60, and a cover 51. The compression component includes a moving scroll 20 and a stationary scroll 10, and the motor unit 70 is connected to a crankshaft 30. When the electric compressor 1 is operating normally, gaseous refrigerant enters the low-pressure housing 52 through the suction port of the electric compressor 1 and flows through the motor unit 70 and the bracket 54 to the compression component. The refrigerant passes through the compression component, and the high-pressure gas formed by the meshing motion between the moving scroll 20 and the stationary scroll 10 is discharged into the high-pressure housing 53 through the exhaust port 10a of the stationary scroll 10, and finally leaves the electric compressor 1 through the discharge port.

[0053] During the operation of the electric compressor 1, the compression work between the moving scroll 20 and the stationary scroll 10 generates periodic high-frequency noise, which affects the noise of the electric compressor 1 and the entire vehicle system. This invention eliminates the high-frequency noise generated during the discharge of high-pressure refrigerant through the exhaust port 10a of the stationary scroll 10 by providing a silencing channel 10b on the exhaust port 10a, thereby effectively reducing the pressure pulsation level of the discharged gas and improving the noise of the electric compressor 1 and the entire vehicle.

[0054] According to some embodiments of this utility model, such as Figure 3As shown, in the height direction of the static vortex disk 10, the depth of the silencing channel 10b is H1, and in the radial direction parallel to the crankshaft 30, the maximum length of the silencing channel 10b is h. The silencing channel 10b satisfies: h > H1. At this time, the length of the silencing channel 10b is greater than the depth of the silencing channel 10b, and the distance between the closed end of the silencing channel 10b and the inlet end 10c is the largest. The silencing channel 10b can cancel more frequency sound waves, thereby improving the silencing effect of the silencing channel 10b.

[0055] According to some embodiments of this utility model, such as Figure 3 As shown, the silencing channel 10b satisfies: n is a natural number (0, 1, 2, 3, 4...), c is the speed of sound of the refrigerant, and f is the target noise reduction frequency. Specifically, the length of the noise reduction channel 10b satisfies: The length of the silencing channel 10b can be adjusted according to the target silencing frequency, thereby changing the frequency of the sound wave that the silencing channel 10b can cancel and improving the silencing effect.

[0056] According to some embodiments of this utility model, such as Figure 3 As shown, in the height direction of the static vortex disk 10, the length of the exhaust hole 10a is H2, where H1 / H2≤1 / 3. It can be understood that since the inlet end 10c of the silencing channel 10b is located on the inner peripheral wall of the exhaust hole 10a, when the depth of the silencing channel 10b is too large, it will affect the efficiency of the medium being discharged from the exhaust hole 10a. Conversely, when the depth of the silencing channel 10b is too small, it will affect the silencing effect of the silencing channel 10b. Therefore, the ratio H1 / H2 of the depth of the silencing channel 10b to the length of the exhaust hole 10a should not be greater than 1 / 3. This can ensure the efficiency of the medium being discharged from the exhaust hole 10a while maintaining the silencing effect of the silencing channel 10b.

[0057] According to some embodiments of this utility model, such as Figures 2-3 As shown, the length of the silencing channel 10b is less than the radius of the first disc body to avoid affecting the structural strength of the static vortex disk 10; the depth of the silencing channel 10b is less than the length of the exhaust hole 10a to avoid affecting the efficiency of the medium discharged from the exhaust hole 10a; the depth of the silencing channel 10b is less than the thickness of the first disc body to avoid excessive medium storage in the silencing channel 10b; the width of the silencing channel 10b is less than the diameter of the exhaust hole 10a, which can also prevent excessive medium storage in the silencing channel 10b.

[0058] According to some embodiments of this utility model, such as Figure 3As shown, in the height direction of the stationary vortex disk 10, the surface of the first disk body facing away from the second disk body is provided with a groove 10d that is recessed towards the second disk body. The open opening of the groove 10d facing away from the second disk body is provided with a baffle 11 to define a silencing channel 10b. Specifically, in order to facilitate the machining of the silencing channel 10b on the stationary vortex disk 10, a groove 10d is opened on the surface of the first disk body facing away from the second disk body, and a baffle 11 is provided. The baffle 11 covers the open opening of the groove 10d, so that the baffle 11 and the groove 10d together define the silencing channel 10b. The silencing channel 10b is connected to the exhaust hole 10a only through the inlet end 10c located on the inner peripheral wall of the exhaust hole 10a. This method of machining the silencing channel 10b on the stationary vortex disk 10 is simple and easy to manufacture.

[0059] In some embodiments, a mounting groove is formed on the surface of the first disc body away from the second disc body, and a portion of the bottom wall of the mounting groove has the aforementioned groove 10d. A baffle 11 is received within the mounting groove and connected to the bottom wall of the mounting groove. Here, as... Figures 3-4 As shown, the baffle 11 can be connected to the stationary scroll 10 by means of glue, interference fit, welding, etc. The baffle 11 can also be connected to the stationary scroll 10 by means of fastener 40. Correspondingly, the stationary scroll 10 has threaded holes suitable for fastener 40 to pass through, and the baffle 11 has through holes suitable for fastener 40 to pass through.

[0060] In some embodiments, the stationary vortex disk 10 is provided with an exhaust valve for opening or closing the exhaust port 10a. The exhaust valve is configured to cover the baffle 11 when the exhaust port 10a is closed. When the exhaust valve closes the exhaust port 10a, it can cover the baffle 11 to prevent the airflow from impacting the baffle 11 due to excessive airflow and causing the baffle 11 to detach from the stationary vortex disk 10, thereby preventing airflow from leaking through the gap between the baffle 11 and the stationary vortex disk 10.

[0061] According to some embodiments of the present invention, the hardness of the baffle 11 is not lower than that of the first disc body, so as to avoid damage to the baffle 11 when other structures rub against the static vortex disc 10, thereby avoiding damage to the silencing channel 10b.

[0062] According to some embodiments of the present invention, the baffle 11 is provided with a first region, the first disc is provided with a second region, and the first region and the second region are sealed together so that the silencing channel 10b is connected to the outside only through the inlet end 10c.

[0063] In some embodiments, the roughness of the first region is greater than the roughness of the remaining regions of the baffle 11; and / or the roughness of the second region is greater than the roughness of the remaining regions of the first disc body, so as to increase the friction between the baffle 11 and the first disc body, prevent the baffle 11 from separating from the first disc body, and ensure the integrity of the silencing channel 10b, thereby ensuring the silencing effect of the silencing channel 10b.

[0064] According to some embodiments of this utility model, such as Figure 5 As shown, there are multiple grooves 10d, which are spaced circumferentially along the exhaust port 10a, and each groove 10d has a baffle 11 on its open side. Here, there can be one or more silencing channels 10b. The lengths of the multiple silencing channels 10b can be different to reduce the noise of sound waves of different frequencies and improve the silencing effect. The lengths of the multiple silencing channels 10b can also be the same to improve the silencing efficiency. The design can be based on the actual situation.

[0065] The following is a brief description of an air conditioning device 100 for a vehicle according to the present invention.

[0066] like Figure 6 As shown, the air conditioning device 100 for a vehicle according to the present invention includes the electric compressor 1 for a vehicle as described in any of the above embodiments. Since the air conditioning device 100 for a vehicle according to the present invention is provided with the electric compressor 1 for a vehicle as described in the above embodiments, the operating noise of the air conditioning device 100 for a vehicle is low.

[0067] The vehicle 1000 according to this utility model is briefly described below.

[0068] like Figure 7 or Figure 8 As shown, the vehicle 1000 according to the present invention includes the electric compressor 1 for a vehicle as described in any of the above embodiments or the air conditioning device 100 for a vehicle as described in the above embodiments. Since the vehicle 1000 according to the present invention is provided with the electric compressor 1 for a vehicle as described in the above embodiments or the air conditioning device 100 for a vehicle as described in the above embodiments, the vehicle 1000 has low operating noise and a good user riding experience.

[0069] In summary, the electric compressor 1 for vehicles according to this utility model has a silencing channel 10b on the exhaust port 10a side to reduce gas pressure pulsation during the exhaust process of the scroll compressor, weaken the aerodynamic excitation force, effectively reduce the pressure pulsation level of the exhaust gas, eliminate the high-frequency noise generated during the exhaust process, and improve the noise of the electric compressor 1 and the whole vehicle.

[0070] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. 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. In addition, those skilled in the art can combine and integrate the different embodiments or examples described in this specification.

[0071] Although embodiments of the present invention have been shown and described above, variations, modifications, substitutions and alterations can be made to the above embodiments.

Claims

1. An electric compressor for a vehicle, characterized in that, include: The housing has an electrical control chamber (50a), a low-pressure chamber (50b) and a high-pressure chamber (50c) inside, and an electrical control component (60) is provided inside the electrical control chamber (50a). A drive component is provided in the low-pressure chamber (50b). The drive component includes a motor part (70) and a crankshaft (30). The motor part (70) cooperates with the crankshaft (30) to drive the crankshaft (30) to rotate. The electronic control component (60) is connected to the motor part (70) to control the operating state of the motor part (70). A static vortex disk (10) includes a first disk body and a first vortex blade. The first vortex blade is disposed on the first disk body. The first disk body is provided with an exhaust hole (10a) and a silencing channel (10b). The exhaust hole (10a) is connected to the high-pressure chamber (50c). The inlet end (10c) of the silencing channel (10b) is located on the inner peripheral wall of the exhaust hole (10a). The silencing channel (10b) is formed as a blind hole structure. The moving scroll (20) includes a second disk body and a second scroll blade. The second scroll blade is disposed on the second disk body. The first scroll blade and the second scroll blade mesh to define a compression chamber (20a). The compression chamber (20a) is connected to the exhaust port (10a). The second disk body is adapted to rotate under the drive of the crankshaft (30).

2. The electric compressor for a vehicle according to claim 1, characterized in that, In the height direction of the stationary vortex disk (10), the depth of the silencing channel (10b) is H1, and in the radial direction parallel to the crankshaft (30), the maximum length of the silencing channel (10b) is h. The silencing channel (10b) satisfies: h > H1.

3. The electric compressor for a vehicle according to claim 2, characterized in that, The silencing channel (10b) satisfies: Where n is a natural number (0, 1, 2, 3, 4...), c is the speed of sound of the refrigerant, and f is the target noise reduction frequency.

4. The electric compressor for a vehicle according to claim 2, characterized in that, In the height direction of the stationary vortex disk (10), the length of the exhaust port (10a) is H2, where H1 / H2≤1 / 3.

5. The electric compressor for a vehicle according to claim 2, characterized in that, The length of the silencing channel (10b) is less than the radius of the first disc, the depth of the silencing channel (10b) is less than the length of the exhaust hole (10a), the depth of the silencing channel (10b) is less than the thickness of the first disc, and the width of the silencing channel (10b) is less than the diameter of the exhaust hole (10a).

6. The electric compressor for a vehicle according to any one of claims 1-5, characterized in that, In the height direction of the static vortex disk (10), the surface of the first disk body facing away from the second disk body is provided with a groove (10d) that is recessed toward the second disk body, and the opening of the groove (10d) facing away from the second disk body is provided with a baffle (11) to define the silencing channel (10b).

7. The electric compressor for a vehicle according to claim 6, characterized in that, The hardness of the baffle (11) is not lower than that of the first disc.

8. The electric compressor for a vehicle according to claim 6, characterized in that, The baffle (11) is provided with a first region, and the first disc is provided with a second region, and the first region and the second region are sealed together.

9. The electric compressor for a vehicle according to claim 6, characterized in that, The grooves (10d) are multiple and are spaced apart circumferentially along the vent (10a), and each groove (10d) has a baffle (11) on its open side.

10. An air conditioning device for a vehicle, characterized in that, Includes an electric compressor (1) for a vehicle according to any one of claims 1-9.

11. A vehicle, characterized in that, Includes an electric compressor (1) for a vehicle according to any one of claims 1-9, or includes an air conditioning unit (100) for a vehicle according to claim 10.

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