Housing component, electric compressor, air conditioning system and vehicle

Abstract

The application discloses a shell component, an electric compressor, an air conditioning system and a vehicle. The electric compressor comprises a compression component, and the compression component has an exhaust cavity. The shell component has an exhaust passage, and the exhaust passage is adapted to communicate with the exhaust cavity, so that the exhaust cavity is adapted to exhaust to the outside of the shell component through the exhaust passage. The shell component has a first chamber, and the shell component has a bypass passage. The bypass passage communicates the exhaust passage with the first chamber. The bypass passage communicates with the first chamber through a first communication port. The vertical distance between the first communication port and the lowest point of the first chamber is H2. The vertical distance between the highest point and the lowest point of the first chamber is H1. 0.2 <= H2 / H1 <= 0.7. According to the shell component, the space of the first chamber can be fully utilized, and the exhaust noise of the electric compressor is improved by arranging the bypass passage and the first chamber.

Description

Technical Field

[0001] The present invention relates to the technical field of compressors, and in particular to a housing component, an electric compressor, an air-conditioning system and a vehicle. Background Art

[0002] Electric compressors are core components of vehicle refrigeration systems. Their operation generates vibration and noise, which impacts vehicle noise and can cause subjective auditory issues. In related technologies, high-pressure refrigerant discharged from the compression element of an electric compressor enters the exhaust chamber and exits the compressor directly through the exhaust duct. The exhaust airflow noise and pressure pulsations generated by the electric compressor's operation can easily stimulate resonance in various components of the vehicle's thermal management system, leading to vehicle noise and vibration issues. Summary of the Invention

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention provides a housing component for an electric compressor, wherein the housing component can improve the exhaust noise of the electric compressor.

[0004] The present invention further provides an electric compressor having the above-mentioned housing component.

[0005] The present invention also provides an air conditioning system having the electric compressor.

[0006] The present invention also provides a vehicle having the above air conditioning system.

[0007] According to the first aspect of the present invention, a shell component for an electric compressor includes a compression component, the compression component has an exhaust chamber, the shell component has an exhaust channel, the exhaust channel is suitable for communicating with the exhaust chamber, so that the exhaust chamber is suitable for exhausting air to the outside of the shell component through the exhaust channel; the shell component has a first chamber, the shell component has a bypass channel, the bypass channel connects the exhaust channel and the first chamber, the bypass channel is connected to the first chamber through a first connecting port, the vertical distance between the first connecting port and the lowest point of the first chamber is H2, the vertical distance between the highest point and the lowest point of the first chamber is H1, 0.2≤H2 / H1≤0.7.

[0008] According to the housing component for an electric compressor of the present invention, the bypass channel and the first chamber are provided to reduce the exhaust noise of the electric compressor. Furthermore, by setting 0.2≤H2 / H1≤0.7, the exhaust noise attenuation effect of the bypass channel and the first chamber is more significant.

[0009] In some embodiments, the bypass channel is located at an upper portion of the first chamber.

[0010] In some embodiments, the bypass passage is communicated with the exhaust passage through a second communication port, and the second communication port is higher than the first communication port.

[0011] In some embodiments, the minimum flow area of ​​the exhaust channel is S1, and the minimum flow area of ​​the bypass channel is S2, wherein 0.025≤S2 / S1≤0.6.

[0012] In some embodiments, the minimum flow area of ​​the bypass channel is S2, the volume of the first chamber is V, and 0.008≤S2 / V≤0.48.

[0013] In some embodiments, the bypass channel is one or includes multiple sub-channels. When the bypass channel includes the multiple sub-channels, the sum of the minimum flow areas of the multiple sub-channels is S2.

[0014] In some embodiments, the housing component includes a first housing, the exhaust passage includes a first passage formed on the first housing, and at least a portion of the first chamber is formed in the first housing.

[0015] In some embodiments, a first through-hole is formed on the first shell, and both ends of the first through-hole pass through the first channel and the first chamber respectively, wherein the first through-hole serves as the bypass channel; or, a tube is inserted into the first through-hole, and the tube participates in defining the bypass channel.

[0016] In some embodiments, an extension section extending toward the first chamber is formed on the first shell, a first through-hole is formed in the extension section, two ends of the first through-hole respectively pass through the first channel and the first chamber, wherein the first through-hole serves as the bypass channel; or a sleeve is provided on the outer shell of the extension section, and the sleeve and the first through-hole jointly define the bypass channel.

[0017] In some embodiments, the shell component further includes an end structural member, which is provided at one axial end of the first shell, and the bypass channel is defined between the end structural member and an end surface of the axial end of the first shell.

[0018] In some embodiments, the first channel and the bypass channel are spaced apart along the axial direction of the first shell, the exhaust channel further includes a second channel formed on the first shell, the end structure has a gas cavity connected to the exhaust cavity, and the second channel connects the gas cavity and the first channel.

[0019] In some embodiments, the shell component includes an oil separation component, the oil separation component defines an oil separation chamber, the exhaust channel includes the oil separation chamber, the oil separation inlet of the oil separation chamber is connected to the exhaust chamber, and the oil separation outlet of the oil separation chamber is connected to the first channel.

[0020] In some embodiments, the minimum flow area of ​​the oil separation outlet of the oil separation chamber is S3, and the minimum flow area of ​​the bypass channel is S2, wherein 0.025≤S2 / S3≤0.6.

[0021] According to the second aspect of the present invention, the electric compressor includes: a shell component, the shell component including the shell component for the electric compressor described in any of the above embodiments; a compression component, the exhaust chamber of the compression component is connected to the exhaust channel so as to be suitable for exhausting air to the outside of the shell component through the exhaust channel; and a motor component, the motor component including a motor body and a drive shaft, and the motor body drives the compression component through the drive shaft to perform compression work.

[0022] According to the electric compressor of the present invention, by providing the housing member for the electric compressor according to any one of the first aspects, the exhaust noise of the electric compressor can be reduced.

[0023] An air conditioning system according to a third aspect of the present invention includes the electric compressor described in the above embodiment.

[0024] According to the air conditioning system of the present invention, by providing the electric compressor according to the second aspect, the exhaust noise of the electric compressor can be reduced, thereby reducing the operating noise of the entire air conditioning system.

[0025] A vehicle according to a fourth aspect of the present invention includes a vehicle body and an air conditioning system mounted on the vehicle body, wherein the air conditioning system is the air conditioning system described in the above embodiment.

[0026] According to the vehicle of the present invention, by providing the air conditioning system of the third aspect, the resonance problem of various components in the vehicle thermal management system caused by the exhaust noise of the electric compressor can be improved, thereby improving the noise and vibration caused to the vehicle.

[0027] Additional aspects and advantages of the present invention will be set forth in part in the description which follows and, in part, will be obvious from the description which follows, or may be learned by practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments with reference to the following drawings, in which:

[0029] Figure 1 is an axial cross-sectional view of an electric compressor according to a first embodiment of the present invention;

[0030] Figure 2 is Figure 1 a cross-sectional view of an electric compressor according to the first embodiment of the present application;

[0031] Figure 3 is Figure 1 a perspective view of a first housing and the like according to the first embodiment of the present application;

[0032] Figure 4 a cross-sectional view of an electric compressor according to the second embodiment of the present application;

[0033] Figure 5 a cross-sectional view of an electric compressor according to the third embodiment of the present application;

[0034] Figure 6 an exploded view of a housing member and the like according to the fourth embodiment of the present application;

[0035] Figure 7 a schematic view of a vehicle according to an embodiment of the present application;

[0036] Figure 8 a graph of H2 / H1 versus pressure pulsation amplitude;

[0037] Figure 9 a graph of S2 / V versus pressure pulsation amplitude.

[0038] Reference Signs:

[0039] an electric compressor 1000,

[0040] a housing member 100,

[0041] a first chamber 10,

[0042] an exhaust passage 11,

[0043] a bypass passage 12, a first communication port 121, a second communication port 122,

[0044] a first housing 13, a first passage 131, a second passage 132, a first perforation 133, an extension 134,

[0045] a spool 14,

[0046] an end structure 15, a gas chamber 151, a bracket 152, a gasket 153,

[0047] an oil separation assembly 16, an oil separation chamber 161, an oil separation inlet 1611, an oil separation outlet 1612, an exhaust pipe 1613,

[0048] compressing part 200, exhaust cavity 201, first bearing 21, first exhaust port 211, second bearing 22, second exhaust port 221, first cylinder 23, second cylinder 24, first piston 25, second piston 26, partition 27, muffler 28, muffling cavity 291, communication passage 292,

[0049] drive shaft 300, air conditioning system 2000, vehicle 3000. DETAILED DESCRIPTION

[0050] Embodiments of the present application are described in detail below with reference to several examples illustrated in the attached drawings, wherein like or similar elements are denoted by the same or similar reference numerals throughout the drawings. The embodiments described below are exemplary and are intended to explain the present application, and are not to be understood as limiting the present application.

[0051] The following disclosure provides many different embodiments, or examples, for implementing different structures of the present application. For purposes of explanation and non- limitation, specific details of certain examples are set forth. Of course, many modifications and variations will be apparent to those skilled in the art. It is intended that the embodiments described herein be considered in a relational sense only as they are provided for the purpose of explaining the present application. Further, it is to be understood that the chemical structure of the present application is provided for purposes of explanation and non-limitation, and that other processes can be applicable and / or other materials can be used without departing from the scope of the present application.

[0052] Hereinafter, referring to the drawings, a housing part 100 for an electric compressor 1000, the electric compressor 1000, an air conditioning system 2000, and a vehicle 3000 according to embodiments of the present application are described.

[0053] As shown in FIG. 1, the electric compressor 1000 according to embodiments of the present application includes the housing part 100. Figure 1 and Figure 2 As shown in FIG. 1, the electric compressor 1000 according to embodiments of the present application includes the housing part 100.

[0054] Meanwhile, the housing part 100 has an exhaust passage 11 adapted to communicate with the exhaust cavity 201, so that the exhaust cavity 201 is adapted to exhaust to the outside of the housing part 100 through the exhaust passage 11.

[0055] It is understood that the compression component 200 compresses the refrigerant to form high-pressure refrigerant, which then enters the exhaust chamber 201. The exhaust chamber 201 is connected to the outside of the shell component 100 through the exhaust passage 11. When the gas pressure in the exhaust chamber 201 is greater than the gas pressure outside the shell component 100, the high-pressure refrigerant in the exhaust chamber 201 flows to the outside of the shell component 100 through the exhaust passage 11 due to the pressure difference, and is eventually discharged from the shell component 100.

[0056] It should be noted that since the compression component 200 has the characteristic of intermittent exhaust when working, during the above-mentioned high-pressure refrigerant discharge process, the flow of high-pressure refrigerant in the exhaust channel 11 is prone to produce pressure pulsation noise, resulting in increased noise and vibration of the electric compressor 1000.

[0057] To solve the above problems, a first chamber 10 is provided in the shell component 100 of an embodiment of the present invention, and a bypass channel 12 is provided on the shell component 100, which connects the exhaust channel 11 and the first chamber 10. Therefore, during the exhaust process of the compression component 200, part of the refrigerant in the exhaust channel 11 can enter the first chamber 10 through the bypass channel 12 under the action of the pressure difference, and during the intake process of the compression component 200, at least part of the refrigerant in the first chamber 10 can return to the exhaust channel 11 through the bypass channel 12 under the action of the pressure difference.

[0058] Combine Figure 3 The bypass channel 12 is connected to the first chamber 10 through the first communication port 121. The vertical distance between the first communication port 121 and the lowest point of the first chamber 10 is H2. The vertical distance between the highest point and the lowest point of the first chamber 10 is H1. 0.2≤H2 / H1≤0.7, for example, 0.2, 0.21, 0.25, 0.28, 0.31, 0.35, 0.38, 0.41, 0.45, 0.48, 0.51, 0.55, 0.58, 0.61, 0.65, 0.68, 0.7, etc. It should be noted that the "vertical distance" described herein refers to the distance in the direction of gravity.

[0059] In this structure, by providing the bypass passage 12 and the first chamber 10, the high-pressure refrigerant discharged from the compression component 200 can be diverted into the first chamber 10 and outside the housing 100 after entering the exhaust passage 11. This can attenuate the pressure pulsation noise in the exhaust passage 11 and reduce the exhaust noise of the electric compressor 1000. Furthermore, by setting 0.2≤H2 / H1≤0.7, a certain distance is maintained between the first communication port 121 and both the highest and lowest points of the first chamber 10, significantly reducing the pressure pulsation noise of the first chamber 10.

[0060] Furthermore, in some optional examples, the first chamber 10 includes an oil pool for storing oil. If 0.2 ≤ H2 / H1 ≤ 0.7 is set, the ratio of H1-H2 to H1 can be ensured to be sufficient. When the first communication port 121 is higher than the oil level in the first chamber 10, the space above the liquid level in the first chamber 10 is sufficient to attenuate pressure pulsation noise, thereby ensuring a relatively significant noise reduction effect even when oil is stored in the first chamber 10. Of course, the present invention is not limited to this, and the first chamber 10 is not limited to storing oil. While having a noise reduction effect, the first chamber 10 can also be used for other purposes, maximizing the utilization of the space in the first chamber 10.

[0061] It should be added that, in the traditional design, the first chamber is used as the oil storage chamber of the electric compressor, which is used as part of the compressor oil supply system to ensure the lubrication and sealing of the compressor. In order to ensure the reliable operation of the electric compressor, a large amount of oil is stored in the first chamber, and the area of ​​the first chamber above the oil pool is not fully utilized or is submerged in lubricating oil. In the electric compressor 1000 of the present invention, when the first chamber 10 is used for oil storage, the first chamber 10 is designed to be divided into two parts, namely, the oil pool chamber and the upper oil pool chamber above the oil pool. The exhaust channel 11 is connected to the upper oil pool chamber of the first chamber 10 by setting a bypass channel 12. In addition, by setting 0.2≤H2 / H1≤0.7, the oil in the first chamber 10 can be kept stable, ensuring the lubrication and sealing of the compression mechanism, and fully utilizing the upper oil pool chamber as a buffer refrigerant and silencing effect. That is to say, while utilizing the first chamber 10 to store oil, the free space of the first chamber 10 is also utilized as a buffer space for refrigerant discharge, so that the bypass channel 12 and the first chamber 10 have the effect of attenuating exhaust noise, thereby maximizing the space utilization effect of the first chamber 10.

[0062] In some embodiments, as Figures 1-4 As shown, the bypass passage 12 is located at an upper portion of the first chamber 10 .

[0063] For a general electric compressor 1000 , the exhaust passage 11 of the electric compressor 1000 is usually provided at the upper portion thereof.

[0064] Therefore, by arranging the bypass channel 12 at the upper part of the first chamber 10, under the premise of ensuring 0.2≤H2 / H1≤0.7, the distance between the bypass channel 12 and the exhaust channel 11 can be shortened as much as possible, the length of the bypass channel 12 can be shortened, and noise reduction can be achieved quickly. In addition, the structure of the shell component 100 can be simplified, which is convenient for processing, improves reliability, and improves structural compactness.

[0065] Of course, the present invention is not limited to this. In some other embodiments of the present invention, the bypass channel 12 may also be provided at the lower part of the first chamber 10, and the first connecting port 121 of the bypass channel 12 may extend upward to exceed the liquid level, thereby also meeting the effect of drawing air from the exhaust channel 11 to the first chamber 10.

[0066] It should be noted that the "upper portion" described herein does not necessarily refer to the highest position; it can be the highest position or near the highest position. The "lower portion" does not necessarily refer to the lowest position; it can be the lowest position or near the lowest position. Furthermore, it should be noted that the first chamber 10 can be of a regular or irregular shape, and the specific shape is not limited.

[0067] Furthermore, when the bypass channel 12 is located above the first chamber 10, it communicates with the exhaust channel 11 through the second communication port 122, which is higher than the first communication port 121. With this structure, the center of the second communication port 122 is located directly above or diagonally above the first communication port 121. This simplifies the structure of the bypass channel 12 and makes it easy to manufacture.

[0068] It should be noted that the bypass channel 12 extends in a straight line or a curve from the second connecting port 122 to the first connecting port 121 , and the center of the second connecting port 122 and the center of the first connecting port 121 can be on the same cross section or on different cross sections.

[0069] exist Figures 1-3 In the example of FIG, the second communication port 122 of the bypass channel 12 is located directly above the first communication port 121, and the bypass channel 12 extends in a straight line from the second communication port 122 to the first communication port 121. Figure 6 In the example, the second communication port 122 of the bypass channel 12 is located obliquely above the first communication port 121 , and the bypass channel 12 extends along a curve in a direction from the second communication port 122 to the first communication port 121 .

[0070] Alternatively, as Figures 1-4 As shown, the minimum flow area of ​​the exhaust channel 11 is S1, and the minimum flow area of ​​the bypass channel 12 is S2, where 0.025≤S2 / S1≤0.6, for example, 0.025, 0.1, 0.15, 0.2, 0.25, 0.3, 0.35, 0.4, 0.45, 0.5, 0.55, 0.6, etc. As a result, the electric compressor 1000 can achieve a better exhaust effect through the exhaust channel 11, while the bypass channel 12 can divert a certain amount of high-pressure refrigerant, so that the pressure pulsation noise of the exhaust channel 11 can be better attenuated through the bypass channel 12 and the first chamber 10.

[0071] The applicant found that, in response to the operating conditions and common noise problems of the electric compressor 1000, by making full use of the first chamber 10 as a buffer refrigerant and silencer, if a specific noise frequency band is encountered, such as low-frequency noise that is difficult to solve, the ratio of the refrigerant flow rate flowing into the first chamber 10 through the bypass channel 12 can be optimized by controlling the ratio of the minimum flow area S2 of the bypass channel 12 and the minimum flow area S1 of the exhaust channel 11, thereby changing the fluid pulsation state in the exhaust channel 11 and changing the frequency of vibration caused by the pressure pulsation of the fluid.

[0072] Alternatively, as Figures 1-4 As shown, the minimum flow area of ​​the bypass channel 12 is S2, the volume of the first chamber 10 is V, and 0.008≤S2 / V≤0.48, for example, 0.008, 0.011, 0.15, 0.18, 0.21, 0.25, 0.28, 0.31, 0.35, 0.38, 0.41, 0.45, 0.48, etc. As a result, the high-pressure refrigerant can flow smoothly into the first chamber 10 through the bypass channel 12, while ensuring that the capacity of the first chamber 10 is relatively sufficient, thereby improving the noise reduction effect.

[0073] The applicant discovered that the attenuation characteristics of fluid pulsation differ significantly from those of acoustic pulsation, and that the acoustic plane wave propagation formula alone cannot achieve optimal fluid pulsation attenuation. Ultimately, the applicant discovered that by determining the optimal ratio range for the minimum flow area of ​​the bypass channel 12 (S2) and the volume of the first chamber 10 (V), the first chamber 10 can effectively attenuate fluid pressure pulsation, thereby achieving better noise reduction.

[0074] In some embodiments, the bypass channel 12 is one or includes multiple sub-channels. When the bypass channel 12 includes multiple sub-channels, the sum of the minimum flow areas of the multiple sub-channels is S2. Therefore, when one bypass channel 12 or multiple sub-channels are provided, the total flow area of ​​the high-pressure airflow flowing through the bypass channel 12 into the first chamber 10 is S2, ensuring a good noise reduction effect.

[0075] In some embodiments, as Figures 1-3 As shown, the housing component 100 may include: a first housing 13; the exhaust passage 11 includes a first passage 131 formed on the first housing 13; and the first chamber 10 is at least partially formed within the first housing 13. In this structure, since the first passage 131 is formed on the first housing 13 and the first chamber 10 is defined by the first housing 13, it is easy to achieve communication between the first passage 131 and the first chamber 10 through the bypass passage 12, simplifying the design and processing of the bypass passage 12.

[0076] The present invention does not limit the method for forming the first channel 131 on the first housing 13. For example, the first channel 131 and the first housing 13 can be integrally formed by casting, injection molding, or punching. In this solution, the arrangement of the first channel 131 is relatively simple in terms of process and can ensure the reliability of the first channel 131.

[0077] Furthermore, if Figure 2 As shown, a first through-hole 133 is formed on the first shell 13. The two ends of the first through-hole 133 respectively penetrate the first channel 131 and the first chamber 10. The first through-hole 133 serves as the bypass channel 12. Under such a structure, the high-pressure refrigerant in the first channel 131 can flow into the first chamber 10 through the first through-hole 133. The first through-hole 133 is directly formed on the first shell 13, making the bypass channel 12 easy to process. It can also enhance the structural strength and reliability of the first through-hole 133 and improve the pressure resistance of the first through-hole 133, thereby reducing the pressure pulsation noise generated when the high-pressure refrigerant flows in the first through-hole 133.

[0078] Of course, the present invention does not limit the method for forming the first through-hole 133 in the first housing 13. For example, the first through-hole 133 and the first housing 13 can be integrally formed by casting, injection molding, or punching. In this solution, the arrangement of the first through-hole 133 is relatively simple in terms of process and can ensure the reliability of the first through-hole 133.

[0079] In some embodiments, as Figure 4 As shown, a first through-hole 133 is formed on the first shell 13, and the two ends of the first through-hole 133 pass through the first channel 131 and the first chamber 10 respectively. A tube 14 is inserted into the first through-hole 133, and the tube 14 participates in defining the bypass channel 12. For example, the tube 14 and the first through-hole 133 jointly define the bypass channel 12, or the first tube 14 alone defines the bypass channel 12. Under such a structure, the high-pressure refrigerant in the first channel 131 flows into the first chamber 10 through the first through-hole 133, or through the first through-hole 133 and the first tube 14. The first through-hole 133 can play a role in structural reinforcement of the tube 14, improve the pressure resistance of the tube 14, and thus reduce the pressure pulsation noise generated when the high-pressure refrigerant flows in the tube 14.

[0080] Moreover, in this solution, the mating length of the cannula 14 in the first through-hole 133, the exposed length of the cannula 14 outside the first through-hole 133, and the length of the cannula 14 itself can be flexibly set, so as to facilitate adjustment of the vertical distance H2 between the first connecting port 121 and the lowest point of the first chamber 10, so that H2 can easily meet the required size, thereby improving the flexibility and feasibility of the design.

[0081] Of course, the present invention does not limit the manner in which the cannula 14 is positioned within the first through-hole 133. For example, the cannula 14 and the first through-hole 133 may be connected by an interference fit, threaded connection, adhesive bonding, welding, snap-fit ​​connection, screw connection, etc. This provides a more stable connection of the cannula 14 within the first through-hole 133. Furthermore, when threaded, the height of the cannula 14 within the first through-hole 133 can be easily adjusted.

[0082] In some embodiments, as Figure 5 As shown, the first shell 13 is formed with an extension section 134 extending into the first chamber 10. A first through-hole 133 is formed in the extension section 134. The two ends of the first through-hole 133 respectively pass through the first channel 131 and the first chamber 10. Thus, by providing the extension section 134, the first through-hole 133 can be simply and effectively machined. Since the length of the extension section 134 is not affected by the wall thickness of the first shell 13, it is easy to ensure that the length of the first through-hole 133 meets the actual requirements. For example, when the first through-hole 133 serves as the bypass channel 12, the design of the extension section 134 can simply and effectively ensure that the vertical distance H2 between the first communication port 121 and the lowest point of the first chamber 10 meets the design requirements. For another example, when the first through-hole 133 is used to mate with the insert tube 14, the mating length between the first through-hole 133 and the insert tube 14 can be ensured to be sufficient, thereby improving the connection stability of the insert tube 14.

[0083] Of course, the present invention is not limited thereto. For example, a sleeve may be provided outside the extension section 134. In this case, the sleeve and the first through-hole 133 may jointly define the bypass channel 12. Thus, by adjusting the length of the sleeve, the vertical distance H2 between the first communication port 121 and the lowest point of the first chamber 10 can be easily adjusted, so that H2 can easily meet the required size, thereby improving the flexibility and feasibility of the design.

[0084] In some embodiments, as Figure 6 As shown, the housing component 100 may further include an end structural member 15, which is disposed at one axial end of the first housing 13, and defines a bypass channel 12 between the end structural member 15 and an end surface of the axial end of the first housing 13. Thus, the end structural member 15 cooperates with the first housing 13 to form the first chamber 10 and simultaneously defines the bypass channel 12, allowing the bypass channel 12 to easily communicate with the first chamber 10, allowing the high-pressure refrigerant in the bypass channel 12 to flow smoothly into the first chamber 10, thereby simplifying the structure and reducing the difficulty of processing.

[0085] It should be noted that the specific structure of the component 15 is not limited, for example, it may include a bracket 152, or include the bracket 152 and a gasket 153 provided between the bracket 152 and the first shell 13, etc.

[0086] In the present solution, the formation of the bypass passage 12 is not limited, for example, as shown in Figure 6 the end surface of the axial one end of the first housing 13 is provided with a groove communicating the inner cavity of the first housing 13 with the exhaust passage 11, and the portion of the end structure 15 adhered to the first housing 13 is a plane. Thus, when the end structure 15 is adhered to the end surface of the axial one end of the first housing 13, the groove cooperates with the end structure 15 to form the bypass passage 12 communicating the exhaust passage 11 with the first chamber 10.

[0087] Of course, the above-mentioned groove can also be provided on the end structure 15, or can also be provided on both the end structure 15 and the first housing 13, which will not be described here.

[0088] For example Figure 1 and Figure 3 the first passage 131 is spaced apart from the bypass passage 12 along the axial direction of the first housing 13, the exhaust passage 11 further includes a second passage 132 formed on the first housing 13, and the end structure 15 has a gas cavity 151 communicating with the exhaust cavity 201, and the second passage 132 communicates the gas cavity 151 with the first passage 131. Thus, the high-pressure refrigerant in the exhaust cavity 201 flows into the second passage 132 through the gas cavity 151, and then flows out of the housing component 100 from the first passage 131. At this time, the bypass passage 12 communicates with the second passage 132, so that the high-pressure refrigerant in the exhaust cavity 201 is divided into the bypass passage 12 earlier, and the exhaust pressure pulsation noise is reduced more quickly. Wherein, the axial direction of the first housing 13 is the same as the axial direction of the compression component 200.

[0089] In some embodiments, as shown in Figures 1-3 the housing component 100 can include an oil separation assembly 16, the oil separation assembly 16 defines an oil separation cavity 161, the exhaust passage 11 includes the oil separation cavity 161, an oil separation inlet 1611 of the oil separation cavity 161 communicates with the exhaust cavity 201, and an oil separation outlet 1612 of the oil separation cavity 161 communicates with the first passage 131.

[0090] It can be understood that the compression component 200 has lubricating oil to reduce the friction loss of the operation of the compression component 200, and the lubricating oil is in direct contact with the gas in the compression component 200, which causes the high-pressure refrigerant discharged from the compression component 200 to easily carry out the lubricating oil. The oil separation assembly 16 is used to separate the lubricating oil in the high-pressure refrigerant from the high-pressure refrigerant, thereby reducing the oil content of the high-pressure refrigerant.

[0091] Therefore, during the flow of the high-pressure refrigerant in the compression component 200 and the shell component 100, the high-pressure refrigerant in the exhaust chamber 201 first flows into the oil separation chamber 161. The high-pressure refrigerant can separate the lubricating oil when flowing in the oil separation chamber 161. The gaseous high-pressure refrigerant after the lubricating oil is separated flows into the first channel 131 and is discharged.

[0092] It should be noted that, in the present invention, the connection method of the oil separation component 16 in the housing component 100 is not limited, or the oil separation component 16 can also be omitted, which will not be described in detail here.

[0093] Optionally, the lower portion of the oil separation chamber 161 has an oil return hole, and the first chamber 10 may have an oil pool, the oil return hole being connected to the oil pool to facilitate oil return, and the oil pool can be used to provide lubricating oil to the compression component 200. In this way, the compactness of the electric compressor 1000 can be improved.

[0094] It should be noted that the gas-liquid separation principle of the oil separator chamber 161 is not limited. For example, the oil separator inlet 1611 can extend along the tangential direction of the oil separator chamber 161. The refrigerant entering the oil separator chamber 161 from the oil separator inlet 1611 can flow circumferentially, and the oil in the refrigerant is thrown out by centrifugal force. The gaseous refrigerant separated from the oil can be discharged through the oil separator outlet 1612, thereby achieving a better gas-liquid separation effect.

[0095] In this embodiment, an exhaust pipe 1613 can also be set in the oil separation chamber 161. The refrigerant entering the oil separation chamber 161 can flow circumferentially around the outer periphery of the exhaust pipe 1613 to achieve a more reliable gas-liquid separation effect. The separated gaseous refrigerant enters the exhaust pipe 1613 and is then discharged from the oil separation outlet 1612 through the exhaust pipe 1613.

[0096] Of course, the present invention is not limited to this. For example, a filter structure such as a filter screen can also be set in the oil separation chamber 161 to filter out the oil in the refrigerant. The gaseous refrigerant separated from the oil can pass through the filter structure and be discharged through the oil separation outlet 1612, which will not be elaborated here.

[0097] Furthermore, when the oil separation chamber 161 is provided, the minimum flow area of ​​the oil separation outlet 1612 of the oil separation chamber 161 is S3, and the minimum flow area of ​​the bypass passage 12 is S2, where 0.025 ≤ S2 / S3 ≤ 0.6, for example, 0.025, 0.1, 0.15, 0.2, 0.25, 0.3, 0.35, 0.4, 0.45, 0.5, 0.55, 0.6, etc. Therefore, when designing the ratio of the minimum flow area S3 of the exhaust passage 11 to the minimum flow area S2 of the bypass passage 12, the influence of the oil separation chamber 161 is taken into account. This helps to improve the exhaust noise reduction effect while ensuring the high-pressure refrigerant is effectively separated from the lubricating oil in the oil separation chamber 161.

[0098] The applicant found that, in response to the operating conditions and common noise problems of the electric compressor 1000, by making full use of the first chamber 10 as a buffer refrigerant and silencer, if a specific noise frequency band is encountered, such as low-frequency noise that is difficult to solve, if an oil separation chamber 161 is provided, the ratio of the refrigerant flow rate flowing into the first chamber 10 through the bypass channel 12 can be optimized by controlling the ratio of the minimum flow area S2 of the bypass channel 12 and the minimum flow area S3 of the oil separation outlet 1612 of the oil separation chamber 161, thereby changing the fluid pulsation state in the exhaust channel 11 and changing the frequency of vibration caused by the pressure pulsation of the fluid.

[0099] like Figure 1 As shown, the electric compressor 1000 according to an embodiment of the present invention includes: a housing component 100, a compression component 200 and a motor component. The housing component 100 includes the housing component 100 for the electric compressor 1000 according to any of the above-mentioned embodiments, the exhaust chamber 201 of the compression component 200 is connected to the exhaust channel 11, so as to be suitable for exhausting air to the outside of the housing component 100 through the exhaust channel 11, and the motor component includes a motor body and a drive shaft 300, and the motor body drives the compression component 200 to perform compression work through the drive shaft. Therefore, by providing the housing component 100 for the electric compressor 1000 according to any of the above-mentioned embodiments, the pressure pulsation noise generated when the high-pressure refrigerant is discharged from the compression component 200 can be reduced, thereby reducing the exhaust noise of the electric compressor 1000.

[0100] It should be noted that the specific type of the electric compressor 1000 is not limited. For example, it can be a horizontal compressor with a central axis extending horizontally or slightly inclined to the horizontal line. For another example, it can be a vertical compressor with a central axis extending vertically or slightly inclined to the vertical line.

[0101] It is worth noting that the specific type of the electric compressor 1000 is not limited. For example, it can be a rotary compressor or a scroll compressor, etc. When the electric compressor 1000 is a rotary compressor, the compression component 200 can include a cylinder, a piston, a vane, etc., and the drive shaft drives the piston to roll in the cylinder. When the electric compressor 1000 is a scroll compressor, the compression component 200 can include a static scroll and a movable scroll, and the drive shaft drives the movable scroll to rotate, etc.

[0102] It should be noted that the relative positional relationship between the housing 100 and the compression component 200 is not limited. For example, the compression component 200 can be completely located within the housing 100, thereby improving structural compactness. For another example, the compression component 200 can be at least partially located within the housing 100. Furthermore, the compression component 200 can be completely located outside the housing 100. This allows the housing 100 and the compression component 200 to meet the different design requirements of different models, providing excellent versatility.

[0103] It should be noted that when the compression component 200 is a rotary compression mechanism, it can be a single-cylinder compression mechanism or a multi-cylinder compression mechanism. Figure 1 In the example shown, the compression component 200 is a two-cylinder compression mechanism, including a first bearing 21 , a second bearing 22 , a first cylinder 23 , a second cylinder 24 , a first piston 25 , a second piston 26 , a partition 27 and a muffler 28 .

[0104] The first cylinder 23 and the second cylinder 24 are arranged axially at intervals, and the first cylinder 23 is located on the side of the second cylinder 24 close to the end structure 15, the partition 27 is clamped between the first cylinder 23 and the second cylinder 24, the first bearing 21 is located on the side of the first cylinder 23 away from the partition 27, and the second bearing 22 is located on the side of the second cylinder 24 away from the partition 27.

[0105] A first compression chamber is formed between the first cylinder 23, the partition 27 and the first bearing 21. The first piston 25 is rotatably adapted to the first compression space. The first bearing 21 has a first exhaust port 211 that is connected to the exhaust chamber of the first compression space. The first bearing 21 covers the gas chamber 151 on the end structure 15, and the first exhaust port 211 is connected to the gas chamber 151.

[0106] A second compression chamber is formed between the second cylinder 24, the partition 27 and the second bearing 22. The second piston 26 can be rolled into the second compression space. The second bearing 22 has a second exhaust port 221 connected to the exhaust chamber of the second compression space. The muffler 28 is arranged on the side of the second bearing 22 away from the second cylinder 24. A muffler chamber 291 is formed between the second bearing 22 and the muffler 28. The second exhaust port 221 is connected to the muffler chamber 291.

[0107] A connecting passage 292 extends through the first bearing 21, first cylinder 23, partition 27, second cylinder 24, and second bearing 22. This connecting passage 292 connects the gas chamber 15 with the muffler chamber 291. As a result, the second cylinder 24 can exhaust air into the muffler chamber 291 through the second exhaust port 221, and the first cylinder 23 can exhaust air into the gas chamber 151 through the first exhaust port 211. The refrigerant in the muffler chamber 291 can enter the gas chamber 15 through the connecting passage 292 and then be discharged through the exhaust passage 11, thereby enhancing the exhaust noise reduction effect.

[0108] Of course, the present invention is not limited to this. For example, the second bearing 22 may not have the second exhaust port 221. In this case, the refrigerant discharged into the gas chamber 15 can also enter the silencer chamber 291 through the connecting channel 292 to achieve the effect of silencing and noise reduction. Then the refrigerant in the silencer chamber 291 returns to the gas chamber 15 through the connecting channel 292, and is then discharged through the exhaust channel 11, thereby also improving the exhaust noise reduction effect.

[0109] like Figure 7 As shown, the air conditioning system 2000 according to the embodiment of the present invention includes any of the above-mentioned electric compressors 1000. Thus, by adopting the above-mentioned electric compressors 1000, the exhaust noise of the electric compressor 1000 can be reduced, thereby reducing the overall operating noise of the air conditioning system 2000.

[0110] It should be noted that the specific application scenarios of the air-conditioning system 2000 according to the embodiment of the present invention are not limited, such as indoor air conditioning, indoor refrigerators, vehicle air conditioning, etc. Once the application scenario is determined, those skilled in the art will be able to know the other components of the air-conditioning system 2000300. For example, when used for indoor air conditioning or indoor refrigerators, it may also include an evaporator, a condenser, a throttling element, etc. For example, when used for vehicle air conditioning, it may also include at least one of an in-vehicle condenser, an in-vehicle evaporator, an outdoor condenser, an outdoor evaporator, and a throttling component, etc., which will not be elaborated here.

[0111] like Figure 7 As shown, a vehicle 3000 according to an embodiment of the present invention includes: a vehicle body and an air conditioning system 2000 mounted on the vehicle body. The air conditioning system 2000 is any of the air conditioning system 2000 described above. Because the exhaust noise and pulsation of the electric compressor 1000 included in the air conditioning system 2000 described above can be improved, when the air conditioning system 2000 is used in the vehicle 3000, the resonance problem of various components in the thermal management system of the vehicle 3000 caused by the exhaust airflow noise and pressure pulsation of the electric compressor 1000 can be alleviated, thereby reducing the noise and vibration caused to the vehicle 3000.

[0112] It should be noted that the specific type of vehicle 3000 according to the embodiment of the present invention is not limited. For example, it can be a new energy vehicle, which can include pure electric vehicles, hybrid vehicles, etc., which are not described in detail here. In addition, once the type of vehicle 3000 is specifically determined, those skilled in the art will be able to understand other components of vehicle 3000, which are not described in detail here.

[0113] In the description of the present invention, it should be understood that the terms "center", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0114] 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 the technical features being referred to. Thus, a feature identified as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, "plurality" means two or more, unless otherwise specifically defined.

[0115] In the present invention, unless otherwise expressly specified or limited, terms such as "mounted," "connected," "connect," and "fixed" should be understood broadly. For example, they may refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection, or communication; direct connection or indirect connection through an intermediate medium; and internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0116] In the present invention, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediary. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0117] In the description of this specification, the reference terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and features of different embodiments or examples without contradiction.

[0118] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to the embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the claims and their equivalents.

Claims

1. A housing component for an electric compressor, the electric compressor comprising a compression component having an exhaust chamber, characterized in that: The housing component is provided with an exhaust channel, the exhaust channel being adapted to communicate with the exhaust cavity, so that the exhaust cavity is adapted to exhaust air to the outside of the housing component through the exhaust channel; The shell component has a first chamber therein and a bypass channel formed on the shell component, the bypass channel communicating with the exhaust channel and the first chamber, the bypass channel communicating with the first chamber through a first communication port, a vertical distance between the first communication port and the lowest point of the first chamber being H2, a vertical distance between the highest point and the lowest point of the first chamber being H1, and 0.2≤H2 / H1≤0.7; The bypass channel is located at the upper portion of the first chamber; The minimum flow area of ​​the exhaust channel is S1, and the minimum flow area of ​​the bypass channel is S2, wherein 0.025≤S2 / S1≤0.

6.

2. The housing component for an electric compressor according to claim 1, characterized in that The bypass passage is communicated with the exhaust passage through a second communication port, and the second communication port is higher than the first communication port.

3. The housing component for an electric compressor according to claim 1, characterized in that The minimum flow area of ​​the bypass channel is S2, the volume of the first chamber is V, and 0.008≤S2 / V≤0.

48.

4. The housing component for an electric compressor according to claim 3, characterized in that The bypass channel is one or includes multiple sub-channels. When the bypass channel includes the multiple sub-channels, the sum of the minimum flow areas of the multiple sub-channels is S2.

5. The housing component for an electric compressor according to claim 1, characterized in that The housing component includes a first housing, the exhaust passage includes a first passage formed on the first housing, and at least a portion of the first chamber is formed in the first housing.

6. The housing component for an electric compressor according to claim 5, characterized in that A first through-hole is formed on the first shell, and two ends of the first through-hole pass through the first channel and the first chamber respectively, wherein the first through-hole serves as the bypass channel; or a cannula is inserted into the first through-hole, and the cannula helps to define the bypass channel.

7. The housing component for an electric compressor according to claim 5, characterized in that An extension section extending toward the first chamber is formed on the first shell, and a first through-hole is formed in the extension section. Two ends of the first through-hole respectively pass through the first channel and the first chamber, wherein the first through-hole serves as the bypass channel; or a sleeve is provided on the outer shell of the extension section, and the sleeve and the first through-hole jointly define the bypass channel.

8. The housing component for an electric compressor according to claim 5, characterized in that The shell component further includes an end structure member, which is provided at one axial end of the first shell, and the bypass channel is defined between the end structure member and an end surface of the one axial end of the first shell.

9. The housing component for an electric compressor according to claim 8, characterized in that: The first channel and the bypass channel are spaced apart in the axial direction of the first shell. The exhaust channel further includes a second channel formed on the first shell. The end structure has a gas cavity connected to the exhaust cavity. The second channel connects the gas cavity and the first channel, and the bypass channel connects to the second channel.

10. The housing component for an electric compressor according to any one of claims 5 to 8, characterized in that: The housing component includes an oil separation component, the oil separation component defines an oil separation chamber, the exhaust channel includes the oil separation chamber, the oil separation inlet of the oil separation chamber is connected to the exhaust chamber, and the oil separation outlet of the oil separation chamber is connected to the first channel.

11. The housing component for an electric compressor according to claim 10, characterized in that The minimum flow area of ​​the oil separation outlet of the oil separation chamber is S3, and the minimum flow area of ​​the bypass channel is S2, wherein 0.025≤S2 / S3≤0.

6.

12. An electric compressor, characterized in that: include: A housing component, comprising a housing component for an electric compressor according to any one of claims 1 to 11; a compression component, wherein an exhaust chamber of the compression component is in communication with the exhaust passage, so as to be suitable for exhausting air to the outside of the housing component through the exhaust passage; The motor component includes a motor body and a drive shaft. The motor body drives the compression component through the drive shaft to perform compression work.

13. An air conditioning system, characterized in that: Comprising the electric compressor according to claim 12.

14. A vehicle, characterized in that: include: A vehicle body and an air-conditioning system mounted on the vehicle body, wherein the air-conditioning system is the air-conditioning system according to claim 13.

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