Electric compressor for vehicle, air conditioning equipment and vehicle

Abstract

The invention discloses an electric compressor for a vehicle, air conditioning equipment and the vehicle, the electric compressor for the vehicle comprises a machine shell, a driving part, a dynamic vortex plate and a static vortex plate, an electric control cavity, a low-pressure cavity and a high-pressure cavity are formed in the machine shell, the dynamic vortex plate and the static vortex plate are matched and jointly define a compression cavity, the static vortex plate is provided with an exhaust hole communicated with the compression cavity, and the exhaust hole is communicated with the high-pressure cavity. The exhaust hole is communicated with the high-pressure cavity, and the orbiting scroll is suitable for being driven by the crankshaft to rotate; the movable vortex plate comprises a plate body and movable vortex blades, the movable vortex blades are arranged on the first surface of the plate body, the movable vortex blades are provided with resonant cavities, the resonant cavities comprise a first cavity body and a second cavity body, the cross section area of the first cavity body is smaller than that of the second cavity body, and an inlet of the first cavity body is formed in the inner end part of the movable vortex blades so as to be communicated with the exhaust hole. According to the electric compressor for the vehicle, the resonant cavity is formed in the movable vortex blade, so that the pressure pulsation level of exhaust gas is reduced.

Description

Technical Field

[0001] This invention relates to the field of vehicles, and more particularly 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. Summary of the Invention

[0003] This invention aims to at least solve one of the technical problems existing in the prior art. To this end, one object of this invention is to provide an electric compressor for vehicles. The electric compressor for vehicles designed according to this invention incorporates a resonant cavity on the moving scroll blades to reduce the pressure pulsation level of the exhaust gas.

[0004] The present invention also proposes an air conditioning device having the above-described electric compressor for vehicles.

[0005] The present invention also proposes a vehicle having the above-mentioned electric compressor or air conditioning equipment.

[0006] An electric compressor for a vehicle according to the present invention includes: a housing, wherein an electronic control chamber, a low-pressure chamber, and a high-pressure chamber are provided within the housing, and an electronic control component is provided within the electronic control chamber; a drive component, wherein the drive component is disposed in the low-pressure chamber, the drive component includes a motor and a crankshaft, the motor cooperating with the crankshaft to drive the crankshaft to rotate, and the electronic control component being connected to the motor to control the operating state of the motor; a moving scroll and a stationary scroll, wherein the moving scroll and the stationary scroll cooperate to define a compression chamber, the stationary scroll having an exhaust port communicating with the compression chamber, the exhaust port communicating with the high-pressure chamber, and the moving scroll being adapted to rotate under the drive of the crankshaft; the moving scroll includes a disk body and moving scroll blades, the moving scroll blades being disposed on a first surface of the disk body, the moving scroll blades having a resonant cavity, the resonant cavity including a first cavity and a second cavity, wherein the cross-sectional area of ​​the first cavity is smaller than the cross-sectional area of ​​the second cavity, and the inlet of the first cavity is disposed at the inner end of the moving scroll blade to communicate with the exhaust port.

[0007] The electric compressor for vehicles according to the present invention improves the noise of the electric compressor by providing a resonant cavity on the moving scroll blades of the moving scroll that communicates with the exhaust port on the stationary scroll. This eliminates the high-frequency noise generated during the exhaust process of the exhaust port, thereby reducing the pressure pulsation level of the gas discharged from the exhaust port.

[0008] According to some embodiments of the present invention, the inlet of the first cavity is located on the end face of the moving vortex blade facing the stationary vortex disk.

[0009] According to some embodiments of the present invention, the radial inner surface of the inner end of the moving vortex blade is provided with a notch, and the inlet of the first cavity is connected to the notch.

[0010] According to some embodiments of the present invention, the first cavity in the orthographic projection plane of the disk body and the notch in the orthographic projection plane of the disk body completely or partially overlap.

[0011] According to some embodiments of the present invention, on a projection plane parallel to the first surface, a tangent line passing through the center of the first surface and tangent to the inner end of the moving vortex blade is defined as a first connecting line, and a connecting line passing through the geometric center of the first cavity and the center of the first surface is defined as a second connecting line. The included angle between the first connecting line and the second connecting line is α, and α satisfies the relationship: 50°≤α≤140°.

[0012] According to some embodiments of the present invention, the moving vortex blade is provided with a channel extending along its height direction, the end of the channel near the first surface is closed, the channel includes a first groove and a second groove, the cross-sectional area of ​​the first groove is larger than the cross-sectional area of ​​the second groove; the second groove defines a second cavity, a hollow sleeve is placed in the first groove, and the inner peripheral wall of the sleeve defines the first cavity.

[0013] According to some embodiments of the present invention, the moving vortex disk is provided with a channel extending through the disk body and the moving vortex blades in the height direction, the end of the channel facing the disk body is sealed by a sealing member, and the channel defines the first cavity and the second cavity.

[0014] According to some embodiments of the present invention, a stop surface is provided in the channel, and the end face of the sealing member facing the second cavity abuts against the stop surface.

[0015] According to some embodiments of the present invention, in the height direction of the moving vortex blade, the height of the first cavity is less than the height of the second cavity.

[0016] According to some embodiments of the present invention, the resonant cavities are multiple and are spaced apart along the length of the moving vortex blades.

[0017] According to some embodiments of the present invention, the moving vortex blade includes a first part and a second part, wherein the radial thickness of the first part is greater than the radial thickness of the second part, and the channel is disposed in the first part.

[0018] According to some embodiments of the present invention, the second part is provided with a groove for placing a seal, the seal being in contact with the stationary vortex disk.

[0019] According to some embodiments of the present invention, the electric compressor further includes: a support bracket and a crankshaft, the support bracket being disposed between a first housing and a second housing of the housing, the crankshaft being disposed within the first housing and passing through the support bracket and connected to the moving scroll, the stationary scroll being fixed between the support bracket and the second housing; the support bracket having a clearance space, a portion of the scroll extending into the clearance space to connect with the crankshaft, and the remaining portion of the scroll slidingly engaging with the support bracket.

[0020] An air conditioning device for a vehicle according to a second aspect embodiment of the present invention is briefly described below.

[0021] 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.

[0022] The vehicle according to a third aspect embodiment of the present invention is briefly described below.

[0023] The vehicle according to the present invention includes the electric compressor for a vehicle as described in any of the above embodiments or includes the air conditioning equipment for a vehicle as described in the above embodiments. Since the vehicle according to the present invention 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.

[0024] In summary, the electric compressor for vehicles according to the present invention eliminates high-frequency noise generated during the exhaust process by setting a resonant cavity on the moving scroll blades of the moving scroll, thereby reducing the pressure pulsation level of the exhaust gas, weakening the aerodynamic excitation force, reducing exhaust fluid noise, and improving the noise of the electric compressor.

[0025] Additional aspects and advantages of the 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

[0026] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0027] Figure 1 This is a cross-sectional view of an electric compressor according to an embodiment of the present invention.

[0028] Figure 2 This is a structural diagram of the moving scroll plate according to some embodiments of the present invention.

[0029] Figure 3 yes Figure 2 Top view of the structure.

[0030] Figure 4 yes Figure 2 A schematic diagram of the central structure located in the area covered by the exhaust port of the stationary vortex disk.

[0031] Figure 5 yes Figure 2 Cross-sectional view of the structure.

[0032] Figure 6 This is a structural diagram of the moving scroll plate according to other embodiments of the present invention.

[0033] Figure 7 yes Figure 6 Cross-sectional view of the structure.

[0034] Figure 8 This is a cross-sectional view of the moving scroll plate according to some embodiments of the present invention.

[0035] Figure 9 This is a schematic diagram of the internal structure of an air conditioning device according to an embodiment of the present invention.

[0036] Figure 10 This is a schematic diagram of the internal structure of a vehicle according to some embodiments of the present invention.

[0037] Figure 11 This is a schematic diagram of the internal structure of a vehicle according to other embodiments of the present invention.

[0038] Figure label:

[0039] 1000, Vehicles; 100, Air conditioning equipment;

[0040] 1. Electric compressor;

[0041] 10. Housing; 11. Electrical control components; 12. Cover plate; 13. High-pressure chamber; 14. Oil-gas separation chamber; 15. Low-pressure chamber; 16. Electrical control chamber;

[0042] 20. Moving scroll plate; 20a. Compression chamber; 20b. Resonance chamber; 20c. First cavity; 20d. Second cavity; 20e. Notch; 20f. Channel; 21. Sleeve; 22. Stop surface; 23. First part; 24. Second part; 24a. Groove; 25. Disc body; 26. Moving scroll blade; 27. Sealing component;

[0043] 30. Static scroll plate; 30a. Exhaust port;

[0044] 41. Support bracket; 42. Crankshaft; 43. Motor;

[0045] K1, first connection; K2, second connection; S1, exhaust port coverage area. Detailed Implementation

[0046] Embodiments of the present invention 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 the present invention, and should not be construed as limiting the present invention.

[0047] In the description of this invention, 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," and "counterclockwise," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention 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. Therefore, they should not be construed as limitations on this invention.

[0048] 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 invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0049] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," 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 invention according to the specific circumstances.

[0050] 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.

[0051] 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.

[0052] The following is for reference. Figures 1-8 An electric compressor 1 for a vehicle according to an embodiment of the present invention is described.

[0053] like Figures 1-8 As shown, the electric compressor 1 for vehicles according to the present invention includes: a housing 10, a drive component, a moving scroll 20, and a stationary scroll 30. The housing 10 contains an electronic control chamber 16, a low-pressure chamber 15, and a high-pressure chamber 13. An electronic control component 11 is located within the electronic control chamber 16. The drive component is located in the low-pressure chamber 15 and includes a motor 43 and a crankshaft 42. The motor 43 cooperates with the crankshaft 42 to drive the crankshaft 42 to rotate. The electronic control component 11 is connected to the motor 43 to control the operating state of the motor 43. The moving scroll 20 and the stationary scroll 30 cooperate to define a compression chamber 20a. The stationary scroll 30 is provided with... The device has an exhaust port 30a that communicates with the compression chamber 20a and the high-pressure chamber 13. The moving scroll 20 is adapted to rotate under the drive of the crankshaft 42. The moving scroll 20 includes a disk body 25 and a moving scroll blade 26. The moving scroll blade 26 is disposed on the first surface of the disk body 25. The moving scroll blade 26 is provided with a resonance cavity 20b. The resonance cavity 20b includes a first cavity 20c and a second cavity 20d. The cross-sectional area of ​​the first cavity 20c is smaller than that of the second cavity 20d. The inlet of the first cavity 20c is located at the inner end of the moving scroll blade 26 to communicate with the exhaust port 30a.

[0054] Specifically, during normal operation of the electric compressor 1, gaseous refrigerant enters the housing 10 through the suction port of the electric compressor 1. The moving scroll 20 and the stationary scroll 30 constitute the compression component of the electric compressor 1. The gaseous refrigerant enters the compression component and forms high-pressure gas through the meshing motion between the moving scroll 20 and the stationary scroll 30. The high-pressure refrigerant is discharged into the high-pressure chamber 13 of the housing 10 through the exhaust port 30a on the stationary scroll 30, and finally leaves the electric compressor 1 through the discharge port on the housing 10. During the operation of the electric compressor 1, the compression work between the moving scroll 20 and the stationary scroll 30 generates periodic high-frequency noise, which affects the noise of the electric compressor 1 and the entire vehicle system.

[0055] Among them, the moving vortex blades 26 of the moving vortex disk 20 are provided with a resonant cavity 20b that communicates with the exhaust port 30a on the stationary vortex disk 30. The natural frequency of the resonant cavity 20b can be the same as the excitation frequency generated during the exhaust process of the exhaust port 30a, thereby effectively canceling the gas pressure pulsation during the exhaust process of the exhaust port 30a, weakening the aerodynamic excitation force, and reducing the exhaust fluid noise.

[0056] Here, the resonant cavity 20b includes a first cavity 20c and a second cavity 20d with different cross-sectional areas. During the process of the airflow in the compression cavity 20a being discharged through the exhaust port 30a, the airflow can selectively enter the resonant cavity 20b through the inlet of the first cavity 20c. Utilizing the Helmholtz resonant cavity 20b silencing principle, the resonant cavity 20b can perform silencing treatment on specific noise frequency bands, thereby reducing the excitation of the airflow and lowering the excitation of the airflow discharged through the exhaust port 30a. This can effectively reduce the fluid noise generated by the electric compressor 1 during the exhaust process, eliminate the high-frequency noise formed during the discharge of high-pressure refrigerant through the exhaust port 30a, and improve the noise of the electric compressor 1 and the entire vehicle.

[0057] According to the present invention, the electric compressor 1 provides a resonant cavity 20b on the moving scroll blade 26 of the moving scroll 20 that communicates with the exhaust port 30a on the stationary scroll 30, thereby eliminating the high-frequency noise generated during the exhaust process of the exhaust port 30a, thereby reducing the pressure pulsation level of the gas discharged from the exhaust port 30a and improving the noise of the electric compressor 1.

[0058] In some embodiments, the static scroll 30 is disposed inside the housing 10 or defines a portion of the housing 10.

[0059] In some embodiments, the electric compressor 1 employs a scroll compressor component. The exhaust port 30a on the stationary scroll 30 is generally located at the center of the stationary scroll 30, and the moving scroll blades 26 on the moving scroll 20 also extend radially from the outer side to the inner side of the disk body 25. It is understood that the excitation generated during the refrigerant discharge from the compressor component through the exhaust port 30a is greater, resulting in more noticeable noise. To improve the noise reduction effect of the resonant cavity 20b, the inlet of the first cavity 20c is located at the inner end of the moving scroll blades 26. This allows the gas to be fully compressed by the compressor component and then discharged from the compressor component through the exhaust port 30a. Furthermore, the gas undergoes noise reduction treatment during the discharge process through the exhaust port 30a, thereby improving the noise reduction efficiency.

[0060] According to some embodiments of the present invention, such as Figures 2-8 As shown, the inlet of the first cavity 20c is located on the end face of the moving vortex blade 26 facing the stationary vortex disk 30. Thus, during the movement of the moving vortex disk 20, when it revolves within a certain angle range, the inner end of the moving vortex disk 20 will meet the exhaust port 30a of the stationary vortex disk 30. Therefore, a resonant cavity 20b structure is provided at the inner end of the moving vortex disk 20. The inlet of the first cavity 20c of the resonant cavity 20b will also move with the moving vortex disk 20 and connect with the exhaust port 30a of the stationary vortex disk 30 at certain specific moments.

[0061] In some embodiments, reference may be made to Figure 4 In the figure, S1 is the area covered by the exhaust port of the stationary vortex disk 30, and the inlet of the first cavity 20c is connected to the exhaust port 30a of the stationary vortex disk 30 at certain specific times.

[0062] In some embodiments, the inlet of the first cavity 20c is directly or indirectly connected to the exhaust port 30a.

[0063] According to some embodiments of the present invention, such as Figures 2-5 As shown, the radial inner surface of the inner end of the moving vortex blade 26 is provided with a notch 20e. The inlet of the first cavity 20c is connected to the notch 20e. Here, the notch 20e can expand the range of communication between the inlet of the first cavity 20c and the exhaust port 30a, so that the resonant cavity 20b can better perform noise reduction treatment on the gas.

[0064] According to some embodiments of the present invention, such as Figures 2-5 As shown, the projection plane of the first cavity 20c onto the disk 25 and the projection plane of the notch 20e onto the disk 25 are completely or partially overlapped, so that the first cavity 20c and the notch 20e can at least partially overlap in the height direction of the moving vortex blade 26, making full use of the space in the height direction of the moving vortex blade 26, reducing the space occupied by the first cavity 20c and the notch 20e in the thickness direction of the moving vortex blade 26, and ensuring the structural strength of the moving vortex blade 26.

[0065] According to some embodiments of the present invention, such as Figure 3 As shown, on the orthographic projection plane parallel to the first surface, the tangent line passing through the center of the first surface and tangent to the inner end of the moving vortex blade 26 is defined as the first connecting line K1, and the line connecting the geometric center of the first cavity 20c and the center of the first surface is defined as the second connecting line K2. The angle between the first connecting line K1 and the second connecting line K2 is α, and α satisfies the relationship: 50°≤α≤140°. Here, an excessively large angle between the first connecting line K1 and the second connecting line K2 will cause misalignment between the inlet of the first cavity 20c and the exhaust port 30a, affecting the vibration damping and noise reduction effect of the resonant cavity 20b. Conversely, an excessively small angle between the first connecting line K1 and the second connecting line K2 will affect the structural strength of the moving vortex blade 26. Therefore, the location of the inlet of the first cavity 20c should ensure that the angle α between the first connecting line K1 and the second connecting line K2 satisfies: 50°≤α≤140°. This ensures that the resonant cavity 20b structure located on the moving vortex blade 26 can communicate with the exhaust port 30a of the stationary vortex disk 30, i.e., ensures that the inlet of the first cavity 20c is located at... Figure 4 The exhaust port area formed by the revolution of the moving vortex disk 20 is shown to ensure that the moving vortex blade 26 has sufficient structural strength.

[0066] According to some embodiments of the present invention, such as Figures 2-7 As shown, the moving vortex blade 26 is provided with a channel 20f extending along its height direction. One end of the channel 20f near the first surface is closed. The channel 20f includes a first groove and a second groove. The cross-sectional area of ​​the first groove is larger than that of the second groove. The second groove defines a second cavity 20d. A hollow sleeve 21 is placed in the first groove. The inner peripheral wall of the sleeve 21 defines the first cavity 20c. Specifically, channel 20f can communicate with the external space through the first cavity 20c inside the sleeve 21. The cross-sectional area of ​​the second cavity 20d of channel 20f is different from that of the first cavity 20c inside the sleeve 21. After the first groove of channel 20f is fitted with the sleeve 21, the cross-sectional area of ​​the first cavity 20c is smaller than that of the second cavity 20d, so as to form a Helmholtz resonant cavity 20b. Using the noise reduction principle of the Helmholtz resonant cavity 20b, the resonant cavity 20b can be used to perform noise reduction treatment on a specific noise frequency band, thereby reducing the excitation of airflow and reducing the excitation of airflow discharged from the exhaust port 30a.

[0067] In some embodiments, the sleeve 21 has a through hole structure in the middle, the through hole defining the first cavity 20c, and the outer side of the sleeve 21 is assembled with the first groove on the moving scroll 20 by means of interference fit, thread, etc.

[0068] In some embodiments, such as Figure 5 , Figure 7 , Figure 8 As shown, the diameter of the first cavity 20c is d1, and the diameter of the second cavity 20d is d2, and d1 < d2.

[0069] According to some embodiments of the present invention, such as Figure 8 As shown, the moving scroll 20 has a channel 20f that penetrates the disk body 25 and the moving scroll blade 26 in the height direction. The end of the channel 20f facing the disk body 25 is sealed by a sealing member 27. The channel 20f defines a first cavity 20c and a second cavity 20d. Specifically, the channel 20f penetrates the moving scroll 20, which is easy to manufacture. The sealing member 27 is provided at the end of the channel 20f facing the disk body 25 to seal one side of the through hole structure facing the disk body 25, so that the through hole is connected to the outside only through the end facing the moving scroll blade 26, thereby forming the Helmholtz resonant cavity 20b structure.

[0070] According to some embodiments of the present invention, such as Figure 8 As shown, a stop surface 22 is provided inside the channel 20f, and the end face of the sealing member 27 facing the second cavity 20d abuts against the stop surface 22. Here, the sealing member 27 can be assembled with the second cavity 20d and the stop surface 22 by means of interference fit, thread, etc., so as to form the Helmholtz resonant cavity 20b structure together with the second cavity 20d and the first cavity 20c.

[0071] According to some embodiments of the present invention, in the height direction of the moving vortex blade 26, the height of the first cavity 20c is less than the height of the second cavity 20d. In some embodiments, such as Figure 5 , Figure 7 , Figure 8 As shown, the height of the first cavity 20c is h1, and the height of the second cavity 20d is h2, and h1 < h2, so as to form a Helmholtz resonant cavity 20b. Using the noise reduction principle of the Helmholtz resonant cavity 20b, the resonant cavity 20b can perform noise reduction treatment on a specific noise frequency band, thereby reducing the excitation of the airflow and reducing the excitation of the airflow discharged from the exhaust port 30a.

[0072] According to some embodiments of the present invention, there are multiple resonant cavities 20b, which are spaced apart along the length of the moving vortex blade 26. The multiple resonant cavities 20b can work simultaneously or intermittently, which can improve the vibration reduction efficiency of the compression component.

[0073] According to some embodiments of the present invention, such as Figure 3As shown, the moving vortex blade 26 includes a first part 23 and a second part 24. The radial thickness of the first part 23 is greater than the radial thickness of the second part 24, and the channel 20f is disposed in the first part 23. It can be understood that the first part 23 has a larger thickness. By placing the channel 20f in the first part 23, the space on the moving vortex blade 26 can be fully utilized, and the structural strength of the moving vortex blade 26 can be avoided.

[0074] According to some embodiments of the present invention, such as Figure 3 As shown, the second part 24 is provided with a groove 24a for placing a seal, which contacts the stationary scroll 30. Here, the seal is used to seal the gap between the moving scroll 20 and the stationary scroll 30, preventing the compressed refrigerant from escaping from the high-pressure side to the low-pressure side through the gap between the moving scroll 20 and the stationary scroll 30, while also preventing uncompressed refrigerant from escaping from the low-pressure side to the high-pressure side, thus ensuring the compression efficiency of the compression component for the refrigerant.

[0075] In some embodiments, the electric compressor 1 includes a housing 10, a compression component, a drive component, a support bracket 41, an electrical control component 11, and a cover plate 12. The housing 10 includes a first housing and a second housing. The drive component includes a motor 43 and a crankshaft 42 connected to the motor 43. When the electric compressor 1 is operating normally, gaseous refrigerant enters the low-pressure chamber 15 of the second housing from the suction port of the electric compressor 1 and flows through the drive component and support bracket 41 to the compression component. The compression component includes at least one pump body structure composed of a moving scroll 20 and a stationary scroll 30. The stationary scroll 30 has an exhaust port 30a, and an exhaust valve is provided on the outside of the exhaust port 30a. When the moving scroll 20 revolves, the space enclosed by the moving scroll 20 and the stationary scroll 30 is continuously compressed. When the pressure inside the chamber reaches the exhaust pressure, the exhaust valve is pushed open, and the high-pressure refrigerant is discharged from the exhaust port 30a of the stationary scroll 30 to the high-pressure chamber 13 inside the first housing, and then discharged from the outlet of the electric compressor 1 through the oil-gas separation chamber 14.

[0076] The following is a brief description of an air conditioning device 100 for a vehicle according to the present invention.

[0077] like Figure 9 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.

[0078] The vehicle 1000 according to the present invention is briefly described below.

[0079] like Figure 10 or Figure 11As 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 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.

[0080] In summary, the electric compressor 1 for vehicles according to the present invention eliminates high-frequency noise generated during the exhaust process of the exhaust port 30a by providing a resonant cavity 20b on the moving scroll blade 26 of the moving scroll 20, thereby reducing the pressure pulsation level of the gas discharged from the exhaust port 30a, weakening the aerodynamic excitation force, reducing exhaust fluid noise, and thus improving the noise of the electric compressor 1.

[0081] 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 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.

[0082] 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 by, The utility model relates to a kind of compressor, comprising: Casing (10), the electric control cavity (16) is equipped in the casing (10), low pressure cavity (15) and high pressure cavity (13), and the electric control part (11) is equipped in the electric control cavity (16); Driving component, the driving component is equipped in the low pressure cavity (15), and the driving component includes motor (43) and crankshaft (42), the motor (43) is cooperated with the crankshaft (42) to drive the crankshaft (42) rotation, and the electric control part (11) is connected with the motor (43) to control the operating state of the motor (43); Dynamic scroll (20) and static scroll (30), the dynamic scroll (20) and the static scroll (30) cooperate and jointly define compression chamber (20a), and the static scroll (30) is equipped with exhaust hole (30a) with the compression chamber (20a) communication, the exhaust hole (30a) is communicated with the high pressure cavity (13), and the dynamic scroll (20) is suitable for being driven under the crankshaft (42) rotation; The dynamic scroll (20) includes disc body (25) and dynamic scroll blade (26), and the dynamic scroll blade (26) is equipped in the first surface of the disc body (25), and the dynamic scroll blade (26) is equipped with resonance cavity (20b), and the resonance cavity (20b) includes first cavity (20c) and second cavity (20d), and the cross-sectional area of the first cavity (20c) is less than the cross-sectional area of the second cavity (20d), and the inlet of the first cavity (20c) is equipped in the inner end of the dynamic scroll blade (26) to be communicated with the exhaust hole (30a).

2. The electric compressor for a vehicle according to claim 1, characterized by, The inlet of the first cavity (20c) is located at the end face of the dynamic scroll blade (26) towards the static scroll (30).

3. The electric compressor for a vehicle according to claim 2, characterized by, The radial inner surface of the inner end of the dynamic scroll blade (26) is equipped with notch groove (20e), and the inlet of the first cavity (20c) is communicated with the notch groove (20e).

4. The electric compressor for a vehicle according to claim 3, characterized by, The first cavity (20c) in the disc body (25) orthographic projection plane and the notch groove (20e) in the disc body (25) orthographic projection plane are completely coincident or partially coincident.

5. The electric compressor for a vehicle according to claim 1, characterized by, On the orthographic projection plane parallel to the first surface, define the tangent line as the first connecting line (K1) that passes through the center of the circle of the first surface and is tangent to the inner end of the dynamic scroll blade (26), and define the connecting line as the second connecting line (K2) that passes through the geometric center of the first cavity (20c) and the center of the circle of the first surface, the included angle between the first connecting line (K1) and the second connecting line (K2) is α, and α satisfies the relationship: 50 ° ≤ α ≤ 140 °.

6. The electric compressor for a vehicle according to claim 1, characterized by, The dynamic scroll blade (26) is equipped with channel (20f) extending along its height direction, and the end of the channel (20f) close to the first surface is closed, and the channel (20f) includes first groove body and second groove body, and the cross-sectional area of the first groove body is greater than the cross-sectional area of the second groove body; The second groove body defines the second cavity (20d), and the first groove body is placed with hollow sleeve (21), and the inner peripheral wall of the sleeve (21) defines the first cavity (20c).

7. The electric compressor for a vehicle according to claim 1, characterized by, The orbiting scroll (20) is provided with a passage (20f) that penetrates the disc body (25) and the orbiting scroll blade (26) in the height direction, an end of the passage (20f) toward the disc body (25) is blocked by a blocking member (27), and the passage (20f) defines the first cavity (20c) and the second cavity (20d).

8. The electric compressor for a vehicle according to claim 7, characterized by, A stop surface (22) is provided in the passage (20f), and an end surface of the blocking member (27) toward the second cavity (20d) is stopped at the stop surface (22).

9. The electric compressor for a vehicle according to claim 1, characterized by, In the height direction of the orbiting scroll blade (26), the height of the first cavity (20c) is smaller than the height of the second cavity (20d).

10. The electric compressor for a vehicle according to claim 1, characterized by, The resonant cavities (20b) are multiple and are arranged at intervals along the length of the orbiting scroll blade (26).

11. The electric compressor for a vehicle according to claim 6, characterized by, The orbiting scroll blade (26) includes a first portion (23) and a second portion (24), the radial thickness of the first portion (23) is greater than the radial thickness of the second portion (24), and the passage (20f) is provided in the first portion (23).

12. The electric compressor for a vehicle according to claim 11, characterized by, The second portion (24) is provided with a groove (24a) for placing a sealing member, and the sealing member is in contact with the fixed scroll (30).

13. An air conditioning device for a vehicle, characterized by comprising: An electric compressor (1) for a vehicle according to any one of claims 1-12.

14. A vehicle characterized by comprising: An electric compressor (1) for a vehicle according to any one of claims 1-13, or an air conditioning device (100) for a vehicle according to claim 13.

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