Electric compressor for a vehicle, air conditioning device and vehicle
By setting a resonant cavity in the exhaust port of the static vortex disk, high-frequency noise during the exhaust process of the electric compressor is eliminated, thus solving the noise problem of the electric compressor and achieving noise reduction and improved user experience.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ANQING WELLING AUTO PARTS CO LTD
- Filing Date
- 2024-08-30
- Publication Date
- 2026-06-02
AI Technical Summary
Existing electric compressors generate high-frequency noise excitation during refrigerant compression and discharge, which resonates with the cavity modes, leading to noise problems.
A resonant cavity, including a connecting hole and a volumetric cavity, is set in the exhaust port of the static vortex disk. The resonant cavity eliminates high-frequency noise during the exhaust process and reduces gas pressure pulsation.
It effectively reduces the noise of the electric compressor, improves the overall noise level of the vehicle, and enhances the user's riding experience.
Smart Images
Figure CN224315181U_ABST
Abstract
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 incorporates a resonant cavity at the exhaust port of the stationary volute to eliminate high-frequency noise generated during exhaust compression and exhaust processes, thereby improving 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 the above-mentioned 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 disposed in the low-pressure chamber, the drive component includes a motor and a crankshaft, the motor and the crankshaft cooperating to drive the crankshaft to rotate, and the electronic control component being connected to the motor to control the operating state of the motor; and a compression component, wherein the compression component includes a moving scroll and a stationary scroll, and the crankshaft is connected to the moving scroll to drive the moving scroll to rotate. The stationary vortex disk includes a first disk body and stationary vortex blades. The stationary vortex blades are disposed on the first disk body and cooperate with the moving vortex blades of the moving vortex disk to define a compression chamber. The first disk body has an exhaust port communicating with the compression chamber, and the exhaust port exhausts gas towards the high-pressure chamber. The first disk body has a resonant cavity, which includes a connecting hole and a volume cavity. The opening of the connecting hole is located on the inner wall of the exhaust port. The volume cavity communicates with the exhaust port through the connecting hole, and the cross-sectional area of the connecting hole is smaller than the cross-sectional area of the volume cavity.
[0007] The electric compressor for vehicles according to this utility model improves the noise of the electric compressor by setting a resonant cavity in the exhaust port of the stationary vortex disk to eliminate high-frequency noise generated during the exhaust process of the exhaust port.
[0008] According to some embodiments of the present invention, in the thickness direction of the static vortex blade, the first disk body is provided with a through groove extending to the outer peripheral wall, the first disk body is provided with a sealing member, the sealing member blocks a portion of the through groove and the remaining portion of the through groove defines the resonant cavity.
[0009] According to some embodiments of the present invention, the sealing member and the through groove are connected by at least one of welding, interference fit and threaded fit.
[0010] According to some embodiments of the present invention, the surface of the first disc body opposite to the moving vortex disc is provided with an open groove, and the first disc body is provided with a sealing cover, the sealing cover covering the open side of the open groove to define the resonant cavity.
[0011] According to some embodiments of the present invention, the sealing cover is provided with a first groove, and the bottom wall of the open groove is provided with a second groove. The first groove and the second groove together define the communicating hole and the volume cavity.
[0012] According to some embodiments of the present invention, the compression component is provided with an exhaust valve for opening or closing the exhaust port, and the exhaust valve covers the sealing cover when the exhaust port is closed.
[0013] According to some embodiments of the present invention, the open groove is provided with a direct protrusion, and the sealing cover is placed on the direct protrusion.
[0014] According to some embodiments of this utility model, the electric compressor is a horizontal compressor, and the housing includes: a low-pressure housing, the low-pressure housing having the low-pressure chamber; a high-pressure housing, the high-pressure housing having the high-pressure chamber inside, the electrical control chamber located on the side of the low-pressure chamber away from the high-pressure chamber in the axial direction of the crankshaft, the stationary scroll being located between the low-pressure chamber and the high-pressure chamber; and a bracket, the bracket being disposed between the low-pressure chamber and the high-pressure chamber, the crankshaft passing through the bracket and connected to the moving scroll.
[0015] According to some embodiments of the present invention, the bracket is clamped between the low-pressure housing and the stationary vortex disk, the bracket is provided with a clearance space, a portion of the second disk of the moving vortex disk extends into the clearance space to connect with the crankshaft, and the remaining portion of the second disk is slidably engaged with the bracket.
[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 eliminates high-frequency noise generated during the exhaust process by setting a resonant cavity in the exhaust port of the stationary vortex disk, thereby effectively offsetting the gas pressure pulsation during the exhaust process, weakening the aerodynamic excitation force, reducing exhaust fluid noise, and improving the noise of the electric compressor.
[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 cross-sectional view of the stationary vortex disk according to some embodiments of the present invention.
[0025] Figure 3 yes Figure 2 Cross-sectional view of the stationary vortex disk.
[0026] Figure 4 This is a cross-sectional view of the stationary vortex disk according to some other embodiments of the present invention.
[0027] Figure 5 yes Figure 4 Cross-sectional view of the stationary vortex disk.
[0028] Figure 6 This is a schematic diagram of the resonant cavity according to an embodiment of the present utility model.
[0029] Figure 7 This is a schematic diagram of the structure of an air conditioning device according to an embodiment of the present utility model.
[0030] Figure 8 This is a schematic diagram of the internal structure of a vehicle according to some embodiments of the present invention.
[0031] Figure 9 This is a schematic diagram of the internal structure of a vehicle according to other embodiments of the present invention.
[0032] Figure label:
[0033] 1000, Vehicles; 100, Air conditioning equipment;
[0034] 1. Electric compressor;
[0035] 11. Low-pressure housing; 11a. Low-pressure chamber; 12. High-pressure housing; 12a. High-pressure chamber; 13. Cover plate; 14. Bracket; 15. Electrical control chamber;
[0036] 21. Motor section; 22. Crankshaft;
[0037] 31. Moving scroll plate; 32. Stationary scroll plate; 32a. Exhaust port; 32b. Connecting hole; 32c. Volumetric cavity; 32d. Through groove; 32e. Open groove; 32f. Second groove; 32g. Directly abutting boss; 33. Exhaust valve plate;
[0038] 41. Screw; 42. Sealing cap; 42a. First groove;
[0039] 50. Electrical control components. Detailed Implementation
[0040] 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.
[0041] 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.
[0042] 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.
[0043] 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.
[0044] 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.
[0045] 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.
[0046] The following is for reference. Figures 1-6 This invention describes an electric compressor 1 for a vehicle according to an embodiment of the present invention.
[0047] like Figure 1 As shown, the electric compressor 1 for vehicles according to this utility model includes: a housing, a drive component, and a compression component. The housing has an electrical control chamber, a low-pressure chamber 11a, and a high-pressure chamber 12a. The electrical control chamber has an electrical control component 50. The drive component is located in the low-pressure chamber 11a and includes a motor 21 and a crankshaft 22. The motor 21 cooperates with the crankshaft 22 to drive the crankshaft 22 to rotate. The electrical control component 50 is connected to the motor 21 to control the operating state of the motor 21. The compression component includes a moving scroll 31 and a stationary scroll 32. The crankshaft 22 is connected to the moving scroll 31 to drive the moving scroll 31. The rotating stationary vortex disk 32 includes a first disk body and stationary vortex blades. The stationary vortex blades are located on the first disk body and cooperate with the moving vortex blades of the moving vortex disk 31 to define a compression chamber. The first disk body is provided with an exhaust port 32a that communicates with the compression chamber and exhausts gas towards the high-pressure chamber 12a. The first disk body is provided with a resonance chamber, which includes a connecting hole 32b and a volume chamber 32c. The opening of the connecting hole 32b is located on the inner wall of the exhaust port 32a. The volume chamber 32c communicates with the exhaust port 32a through the connecting hole 32b. The cross-sectional area of the connecting hole 32b is smaller than the cross-sectional area of the volume chamber 32c.
[0048] Specifically, during normal operation of the electric compressor 1, gaseous refrigerant enters the low-pressure chamber 11a of the compressor housing through the compressor's suction port and then enters the compression component. The refrigerant passes through the compression component and, through the meshing motion between the moving scroll 31 and the stationary scroll 32, forms high-pressure gas. The high-pressure refrigerant is discharged through the exhaust port 32a on the stationary scroll 32 into the high-pressure chamber 12a of the housing, and finally leaves the compressor through the discharge port. During the operation of the electric compressor 1, the compression work between the moving scroll 31 and the stationary scroll 32 generates periodic high-frequency noise, which affects the noise of the electric compressor 1 and the entire vehicle system.
[0049] The volute 32 features a resonant cavity at its exhaust port 32a. The natural frequency of this resonant cavity is identical to the excitation frequency generated during the exhaust process at the exhaust port 32a, effectively counteracting gas pressure pulsations, weakening aerodynamic excitation, and reducing exhaust fluid noise. By incorporating a resonant cavity at the exhaust port 32a, the noise generated by the electric compressor 1 during exhaust is effectively reduced, eliminating high-frequency noise generated during the discharge of high-pressure refrigerant through the exhaust port 32a, thus improving the noise levels of both the compressor and the entire vehicle.
[0050] Here, the resonant cavity includes a connecting hole 32b and a volume cavity 32c. The airflow enters the volume cavity 32c through the connecting hole 32b on the inner wall of the exhaust hole 32a. During this process, the airflow can resonate with the hole wall of the connecting hole 32b or with the hole wall of the volume cavity 32c, thereby reducing the excitation of the airflow and lowering the excitation of the airflow discharged from the exhaust hole 32a.
[0051] According to this utility model, the electric compressor 1 for vehicles has a resonant cavity set in the exhaust port 32a of the static vortex disk 32 to eliminate the high-frequency noise generated during the exhaust process of the exhaust port 32a, thereby reducing the pressure pulsation level of the gas discharged from the exhaust port 32a and improving the noise of the electric compressor 1.
[0052] According to some embodiments of this utility model, such as Figures 2-3 As shown, in the thickness direction of the stationary vortex blade, the first disk body has a through groove 32d extending to the outer peripheral wall. The first disk body has a sealing member that blocks a portion of the through groove 32d, and the remaining portion of the through groove 32d defines a resonant cavity. Specifically, the through groove 32d connects the outside of the first disk body to the exhaust port 32a. To facilitate the creation of a resonant cavity on the stationary vortex disk 32, the through groove 32d can be first created on the first disk body of the stationary vortex disk 32, and a sealing member can be designed to block a portion of the through groove 32d, so that the unblocked portion of the through groove 32d only communicates with the exhaust port 32a, forming a resonant cavity. This resonant cavity is easy to manufacture and implement.
[0053] According to some embodiments of this utility model, the sealing member and the through groove 32d are connected by at least one of welding, interference fit, and threaded fit. Here, the sealing member and the through groove 32d can be fixedly connected by welding, in which case at least a portion of the sealing member covers the surface of the first disc where the through groove 32d is formed, thereby sealing the through groove 32d. Alternatively, the sealing member and the through groove 32d can be connected by interference fit, in which case at least a portion of the sealing member is located inside the through groove 32d and is interference-fitted with the through groove 32d. Or, the sealing member can also be detachably connected to the through groove 32d by threaded fit, for example, in... Figure 2In the embodiment shown, the sealing element is constructed as a screw 41. In this case, the side of the through groove 32d away from the vent hole 32a is sealed by the screw 41, and the sealing element can be detachably connected to the through groove 32d by means of thread engagement.
[0054] In some embodiments, the inner wall of the through groove 32d is provided with internal threads, and the screw 41 can be threadedly connected to the inner wall of the through groove 32d to facilitate the installation of the sealing component.
[0055] According to some embodiments of this utility model, such as Figures 4-5 As shown, the surface of the first disc body facing away from the moving scroll 31 has an open groove 32e. The first disc body has a sealing cover 42, which seals the open side of the open groove 32e to define the resonant cavity. Specifically, to facilitate the creation of the resonant cavity on the stationary scroll 32, an open groove 32e can be first created on the first disc body of the stationary scroll 32, and a sealing cover 42 can be designed to seal the open side of the open groove 32e, so that the resonant cavity is only connected to the exhaust port 32a, thus achieving the sealing of the resonant cavity. This method of manufacturing the resonant cavity is convenient and the processing operation is easier.
[0056] Here, the sealing cover 42 can be connected and fitted to the stationary scroll 32 by welding, snap-fitting, fastener connection or interference fit.
[0057] According to some embodiments of this utility model, such as Figures 4-5 As shown, the sealing cover 42 has a first groove 42a, and the bottom wall of the open groove 32e has a second groove 32f. The first groove 42a and the second groove 32f together define the connecting hole 32b and the volume cavity 32c. Here, by using the sealing cover 42 and the open groove 32e to define the resonant cavity, the slotted area of the first disk can be reduced, thus ensuring the structural strength of the first disk.
[0058] It is understandable that the number of resonant cavities set on the static vortex disk 32 can be one or more, in order to reduce the excitation of airflow.
[0059] Furthermore, the relative dimensions of the resonant cavity can be designed according to the actual target silencing frequency, which should satisfy the following: Where f is the target noise reduction frequency, C0 is the refrigerant sound velocity, S is the cross-sectional area of the connecting hole 32b, L is the length of the connecting hole 32b, and V is the volume of the volumetric cavity 32c.
[0060] According to some embodiments of this utility model, such as Figure 1As shown, the compression component is provided with an exhaust valve plate 33 for opening or closing the exhaust port 32a. Here, when the exhaust valve plate 33 closes the exhaust port 32a, it can cover the sealing cover 42 to avoid the airflow impacting the sealing cover 42 due to excessive airflow, causing the sealing cover 42 to detach from the stationary volute 32, thereby preventing airflow from leaking through the gap between the sealing cover 42 and the stationary volute 32.
[0061] According to some embodiments of this utility model, such as Figures 4-5 As shown, a direct-attachment boss 32g is provided in the open groove 32e, and the sealing cover 42 is placed on the direct-attachment boss 32g. Specifically, the sealing cover 42 abuts against the direct-attachment boss 32g, and the surface of the sealing cover 42 facing the direct-attachment boss 32g contacts the surface of the direct-attachment boss 32g facing the sealing cover 42, so as to increase the friction between the sealing cover 42 and the direct-attachment boss 32g, prevent the sealing cover 42 from separating from the stationary vortex disk 32, and ensure the integrity of the resonant cavity, thereby ensuring the sound absorption effect of the resonant cavity.
[0062] According to some embodiments of this utility model, such as Figure 1 As shown, the electric compressor 1 is a horizontal compressor used in vehicles. The housing includes a low-pressure housing 11, a bracket 14, and a high-pressure housing 12. The low-pressure housing 11 is provided with a low-pressure chamber 11a. The high-pressure housing 12 is provided with a high-pressure chamber 12a. In the axial direction of the crankshaft 22, the electronic control chamber 15 is located on the side of the low-pressure chamber 11a away from the high-pressure chamber 12a. The stationary scroll 32 is located between the low-pressure chamber 11a and the high-pressure chamber 12a. The bracket 14 is located between the low-pressure chamber 11a and the high-pressure chamber 12a. The crankshaft 22 passes through the bracket 14 and is connected to the moving scroll 31.
[0063] In some embodiments, the bracket 14 is clamped between the high-pressure housing 12 and the low-pressure housing 11; in other embodiments, the bracket 14 is integrally formed with the low-pressure housing 11 or the high-pressure housing 12; in other embodiments, the bracket 14 is disposed in the low-pressure cavity 11a and located at the end of the low-pressure cavity 11a adjacent to the high-pressure cavity 12a, or the bracket 14 is disposed in the high-pressure cavity 12a and located at the end of the high-pressure cavity 12a adjacent to the low-pressure cavity 11a.
[0064] Here, the electric compressor 1 includes a housing, a compression component, a drive component, a bracket 14, an electrical control component 50, and a cover plate 13. The housing includes a high-pressure housing 12 and a low-pressure housing 11. The drive component includes a motor unit 21 and a crankshaft 22 connected to the motor unit 21. When the electric compressor 1 is operating normally, gaseous refrigerant enters the low-pressure chamber 15 of the low-pressure housing 11 from the suction port of the electric compressor 1 and flows through the drive component and bracket 14 to the compression component. The compression component includes at least one pump body structure composed of a moving scroll 31 and a stationary scroll 32. The stationary scroll 32 has an exhaust port 32a, and an exhaust valve is provided on the outside of the exhaust port 32a. When the moving scroll 31 revolves, the space enclosed by the moving scroll 31 and the stationary scroll 32 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 32a of the stationary scroll 32 into the high-pressure chamber 12a inside the high-pressure housing 12, and then discharged from the outlet of the electric compressor 1.
[0065] In some embodiments, the static scroll 32 is located inside the housing or defines a portion of the housing.
[0066] According to some embodiments of this utility model, such as Figure 1 As shown, here, the stationary scroll 32 defines a portion of the housing, the bracket 14 is clamped between the low-pressure housing 11 and the stationary scroll 32, and the moving scroll 31 is disposed on the side of the bracket 14 facing the stationary scroll 32 and is adapted to rotate relative to the bracket 14.
[0067] According to some embodiments of this utility model, such as Figure 1 As shown, the bracket 14 is provided with a clearance space. A part of the second disc of the moving scroll 31 extends into the clearance space to connect with the crankshaft 22. The remaining part of the second disc is slidably engaged with the bracket 14. At this time, the moving scroll 31 can rotate relative to the bracket 14 and the stationary scroll 32 under the drive of the crankshaft 22.
[0068] The following is a brief description of an air conditioning device 100 for a vehicle according to the present invention.
[0069] like Figure 7 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.
[0070] The vehicle 1000 according to this utility model is briefly described below.
[0071] like Figure 8 or Figure 9As 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.
[0072] In summary, the electric compressor 1 according to this utility model provides a resonant cavity in the exhaust port 32a of the stationary volute 32 to eliminate the high-frequency noise generated during the exhaust process of the exhaust port 32a, thereby effectively offsetting the gas pressure pulsation during the exhaust process of the exhaust port 32a, weakening the aerodynamic excitation force, reducing the exhaust fluid noise, and improving the noise of the electric compressor 1.
[0073] 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.
[0074] 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 contains an electrical control chamber (15), a low-pressure chamber (11a), and a high-pressure chamber (12a), and the electrical control chamber (15) contains an electrical control component (50); A drive component is provided in the low-pressure chamber (11a). The drive component includes a motor part (21) and a crankshaft (22). The motor part (21) cooperates with the crankshaft (22) to drive the crankshaft (22) to rotate. The electronic control component (50) is connected to the motor part (21) to control the operating state of the motor part (21). The compression component includes a moving scroll (31) and a stationary scroll (32). The crankshaft (22) is connected to the moving scroll (31) to drive the moving scroll (31) to rotate. The stationary scroll (32) includes a first disk body and stationary scroll blades. The stationary scroll blades are disposed on the first disk body and cooperate with the moving scroll blades of the moving scroll (31) to define a compression chamber. The first disk body is provided with an exhaust port (32a) communicating with the compression chamber. The exhaust port (32a) exhausts towards the high-pressure chamber (12a). The first disk body is provided with a resonant cavity, which includes a connecting hole (32b) and a volume cavity (32c). The opening of the connecting hole (32b) is located on the inner wall of the exhaust hole (32a). The volume cavity (32c) is connected to the exhaust hole (32a) through the connecting hole (32b). The cross-sectional area of the connecting hole (32b) is smaller than the cross-sectional area of the volume cavity (32c).
2. The electric compressor for a vehicle according to claim 1, characterized in that, In the thickness direction of the stationary vortex blade, the first disk body is provided with a through groove (32d) extending to the outer peripheral wall. The first disk body is provided with a sealing member, which blocks a portion of the through groove (32d) and the remaining portion of the through groove (32d) defines the resonant cavity.
3. The electric compressor for a vehicle according to claim 2, characterized in that, The sealing element is connected to the through groove (32d) by at least one of welding, interference fit and threaded fit.
4. The electric compressor for a vehicle according to claim 1, characterized in that, The surface of the first disc body facing away from the moving vortex disk (31) is provided with an open groove (32e), and the first disc body is provided with a sealing cover (42), which covers the open side of the open groove (32e) to define the resonant cavity.
5. The electric compressor for a vehicle according to claim 4, characterized in that, The sealing cover (42) is provided with a first groove (42a), and the bottom wall of the open groove (32e) is provided with a second groove (32f). The first groove (42a) and the second groove (32f) together define the connecting hole (32b) and the volume cavity (32c).
6. The electric compressor for a vehicle according to claim 5, characterized in that, The compression component is provided with an exhaust valve plate (33) for opening or closing the exhaust port (32a), and the exhaust valve plate (33) covers the sealing cover (42) when the exhaust port (32a) is closed.
7. The electric compressor for a vehicle according to claim 4, characterized in that, The open groove (32e) is provided with a direct boss (32g), and the sealing cover (42) is placed on the direct boss (32g).
8. The electric compressor for a vehicle according to any one of claims 1-7, characterized in that, The electric compressor (1) is a horizontal compressor, and the casing includes: A low-pressure housing (11) is provided with the low-pressure cavity (11a); A high-pressure housing (12) is provided inside the high-pressure chamber (12a). In the axial direction of the crankshaft (22), the electronic control chamber (15) is located on the side of the low-pressure chamber (11a) away from the high-pressure chamber (12a). The stationary scroll (32) is located between the low-pressure chamber (11a) and the high-pressure chamber (12a). A bracket (14) is provided between the low-pressure chamber (11a) and the high-pressure chamber (12a), and the crankshaft (22) passes through the bracket (14) and is connected to the moving scroll (31).
9. The electric compressor for a vehicle according to claim 8, characterized in that, The bracket (14) is clamped between the low-pressure housing (11) and the stationary vortex disk (32). The bracket (14) is provided with a clearance space. A portion of the second disk of the moving vortex disk (31) extends into the clearance space to connect with the crankshaft (22). The remaining portion of the second disk is slidably engaged with the bracket (14).
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.