Air compressor and vehicle

Abstract

The invention discloses an air compressor and a vehicle, and relates to the technical field of air compression, the air compressor comprises a pressure shell structure, a pressure air flow channel is formed in the pressure shell structure, and an air inlet turbine is arranged in the pressure air flow channel; the motor shell is connected with the pressing shell structure, the motor shell is provided with a rotatable rotor driving part, and the rotor driving part is connected with the air inlet turbine to drive the air inlet turbine to rotate; wherein an air cooling flow channel and a liquid cooling flow channel are formed in the motor shell, the air cooling flow channel is communicated with the air pressing flow channel, and the liquid cooling flow channel and the air cooling flow channel are both used for cooling the rotor driving part. According to the air compressor, the air cooling flow channel and the liquid cooling flow channel are matched with each other to cool the rotor driving part, the durability of the rotor driving part can be improved, the air cooling flow channel inputs air flow through the air pressing flow channel, the air flow does not need to be independently input through an external pipeline, the structure is simple, and the cost is low.

Description

Technical Field

[0001] This invention relates to the field of compressed air technology, and more particularly to an air compressor and a vehicle having the air compressor. Background Technology

[0002] Air compressors typically use oil-free air bearings, which experience a rapid increase in temperature during prolonged high-speed operation. Current technologies cool the air bearings by constructing gas channels and using external pipelines to introduce airflow into the compressor, resulting in a complex and costly design. Summary of the Invention

[0003] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes an air compressor that simplifies the structure of the air compressor and reduces costs.

[0004] An air compressor according to an embodiment of the present invention includes: a pressure shell structure, wherein a compressed air flow channel is formed within the pressure shell structure, and an intake turbine is disposed within the compressed air flow channel; a motor housing, wherein the motor housing is connected to the pressure shell structure, and the motor housing is provided with a rotatable rotor drive member, the rotor drive member being connected to the intake turbine to drive the intake turbine to rotate; wherein an air-cooled flow channel and a liquid-cooled flow channel are formed within the motor housing, the air-cooled flow channel being in communication with the compressed air flow channel, and both the liquid-cooled flow channel and the air-cooled flow channel being used to cool the rotor drive member.

[0005] According to the air compressor of the present invention, the rotor drive component is cooled by the cooperation of air-cooled flow channel and liquid-cooled flow channel, which has higher cooling efficiency and can improve the durability of rotor drive component. Moreover, the air-cooled flow channel inputs air through the compressed air flow channel, without the need for external pipeline to input air separately, which makes the structure simple and the cost low.

[0006] According to some embodiments of the present invention, the air-cooled flow channel includes an outer flow channel and an inner flow channel. The outer flow channel is in communication with the compressed air flow channel and is located radially outside the rotor drive member. The inner flow channel is in communication with the outer flow channel and is located radially inside the rotor drive member.

[0007] According to some embodiments of the air compressor of the present invention, the outer flow channel includes an inlet section, a first branch section and a second branch section, the inlet end of the inlet section is connected to the compressed air flow channel, the outlet end of the inlet section is connected to the first branch section and the second branch section respectively, and the first branch section and the second branch section are connected to the inner flow channel at both ends of the motor housing respectively.

[0008] According to some embodiments of the air compressor of the present invention, the inlet section includes a plurality of sequentially connected sub-flow channels, each of the sub-flow channels extending axially along the motor housing, and the plurality of the sub-flow channels being sequentially distributed circumferentially along the motor housing, with adjacent two sub-flow channels connected by an end arc segment.

[0009] According to some embodiments of the air compressor of the present invention, the inner flow channel includes a first flow channel section and a second flow channel section, the first flow channel section and the second flow channel section being respectively connected to the first flow branch section and the second flow branch section in a one-to-one correspondence, and the gas flow direction in the first flow channel section is opposite to the gas flow direction in the second flow channel section.

[0010] According to some embodiments of the air compressor of the present invention, the pressure shell structure is connected to the end of the motor housing; Wherein, the end of the rotor drive member near the pressure shell structure is rotatably supported on the motor housing by a first air bearing, and the end of the rotor drive member away from the pressure shell structure is rotatably supported on the motor housing by a second air bearing. The first flow channel section flows through the first air bearing, and the second flow channel section flows through the second air bearing.

[0011] According to some embodiments of the air compressor of the present invention, the first air bearing is provided with a limiting back plate at one end facing the pressure shell structure, and the first flow channel section and the first flow splitting section are connected by a first end flow channel passing through the limiting back plate; And / or, the motor housing is provided with a bearing seat, the second air bearing is installed in the bearing seat, and the second flow channel section and the second flow branch section are connected by a second end flow channel that passes through the bearing seat.

[0012] According to some embodiments of the present invention, the bearing housing is provided with a cover plate and an air thrust bearing on the side away from the pressure shell structure. The cover plate is located on the side of the air thrust bearing away from the bearing housing. The second end flow channel passes through the bearing housing and then passes through the cover plate and the air thrust bearing in reverse order and communicates with the second flow channel section.

[0013] According to some embodiments of the air compressor of the present invention, at least a portion of the liquid cooling channel is located between the outer channel and the rotor drive; And / or, at least a portion of the liquid cooling channel extends in a direction that intersects with the extension direction of the outer channel; And / or, the motor housing further includes an exhaust passage located outside the rotor drive component, and the inner flow channel communicates with the exhaust passage.

[0014] The present invention also proposes a vehicle.

[0015] The vehicle according to embodiments of the present invention includes the air compressor described in any of the above embodiments.

[0016] The advantages of the vehicle and the air compressor mentioned above compared to the prior art are the same, and will not be repeated here.

[0017] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0018] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which: Figure 1 This is a schematic diagram of the structure of an air compressor according to an embodiment of the present invention. Figure 1 ; Figure 2 This is a schematic diagram of the structure of an air compressor according to an embodiment of the present invention. Figure 2 ; Figure 3 This is a schematic diagram of the structure of an air compressor according to an embodiment of the present invention. Figure 3 ; Figure 4 This is a schematic diagram of the structure of an air compressor according to an embodiment of the present invention. Figure 4 .

[0019] Figure label: Air compressor 100, 1. Compressor shell structure; 11. Compressed air passage; 12. Intake turbine. Motor housing 2, rotor drive component 21, first air bearing 211, limiting back plate 2111, second air bearing 212, air-cooled flow channel 22, outer flow channel 221, inlet section 2211, sub-flow channel section 2211a, arc section 2211b, first branch section 2212, second branch section 2213, inner flow channel 222, first flow channel section 2221, second flow channel section 2222, liquid-cooled flow channel 23, bearing housing 24, second end flow channel 241, cover plate 25, air thrust bearing 26, exhaust channel 27. Detailed Implementation

[0020] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0021] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, features defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, unless otherwise stated, "a plurality of" means two or more. In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0022] The following is for reference. Figures 1-4 The air compressor 100 described according to an embodiment of the present invention simplifies the structure of the air compressor 100 and reduces costs.

[0023] like Figures 1-4 As shown, the air compressor 100 according to an embodiment of the present invention includes: a pressure shell structure 1 and a motor housing 2.

[0024] The pressure shell structure 1 forms a compressed air flow channel 11, and an intake turbine 12 is provided inside the compressed air flow channel 11. That is to say, airflow can flow in the compressed air flow channel 11, and air can enter the air compressor 100 through the driving force of the intake turbine 12. In other words, the intake turbine 12 can draw air into the air compressor 100 and deliver the drawn air into the compressed air flow channel 11. Thus, the airflow can enter the air compressor 100 through the pressure shell structure 1, thereby facilitating the compression of air.

[0025] The motor housing 2 is connected to the pressure shell structure 1, such that the end of the motor housing 2 is connected to the pressure shell structure 1, so that the motor housing 2 and the pressure shell structure 1 are connected as a whole. The motor housing 2 is provided with a rotatable rotor drive 21, which is connected to the intake turbine 12 to drive the intake turbine 12 to rotate. That is, the air compressor 100 uses a rotor motor, which includes the motor housing 2, a stator portion fixed relative to the motor housing 2, and a rotor portion rotating relative to the motor housing 2. Thus, when the stator portion and the rotor portion form a driving force, the rotor portion rotates under the action of electromagnetic driving force, that is, the rotor portion forms the rotor drive 21, which in turn drives the intake turbine 12 to rotate, thereby causing the intake turbine 12 to compress air.

[0026] Furthermore, an air-cooled flow channel 22 and a liquid-cooled flow channel 23 are formed inside the motor housing 2, and the air-cooled flow channel 22 is connected to the compressed air flow channel 11. That is to say, after the pressure shell structure 1 is connected to the motor housing 2, the airflow in the compressed air flow channel 11 of the pressure shell structure 1 can enter the air-cooled flow channel 22 in the motor housing 2. At the same time, the rotor drive component 21 in the motor housing 2 can drive the intake turbine 12 to rotate, thereby causing the intake turbine 12 to draw in airflow into the compressed air flow channel 11. Thus, the airflow driving force generated by the intake turbine 12 can not only drive the external airflow into the compressed air flow channel 11 as compressed air, but also drive the external airflow into the air-cooled flow channel 22 as heat dissipation airflow, thereby realizing the integration of air compression and airflow cooling functions.

[0027] Both the liquid cooling channel 23 and the air cooling channel 22 are used to cool the rotor drive component 21. That is, the airflow in the compressed air channel 11 can flow into the air cooling channel 22, while the liquid cooling channel 23 can be connected to an external liquid cooling pipeline, so that both the airflow in the air cooling channel 22 and the coolant in the liquid cooling channel 23 can dissipate heat and cool the rotor drive component 21, thereby achieving two forms of cooling and improving cooling efficiency.

[0028] Specifically, the airflow in the compressed airflow channel 11 can flow into the air-cooled airflow channel 22. During the flow of the airflow in the air-cooled airflow channel 22, it can exchange heat with the motor housing 2, so that the air-cooled airflow channel 22 can dissipate heat from the battery housing 2. At the same time, the coolant in the external pipeline can enter the liquid-cooled airflow channel 23. During the flow of the coolant in the liquid-cooled airflow channel 23, it can exchange heat with the motor housing 2, so that the liquid-cooled airflow channel 23 can dissipate heat from the battery housing 2. Simultaneously, the airflow in the compressed airflow channel 11 and the coolant in the liquid-cooled airflow channel 23 can also exchange heat, so that the coolant in the liquid-cooled airflow channel 23 can carry away the heat from the cooling airflow, thereby cooling the cooling airflow. That is, the airflow in the air-cooled airflow channel 22 can transfer heat to the coolant in the liquid-cooled airflow channel 23, thereby reducing the temperature of the airflow. When the airflow continues to move in the motor housing 2 to the rotor drive component 21, it can effectively absorb the heat of the rotor drive component 21, thereby achieving heat dissipation and cooling of the rotor drive component 21, thus enhancing the cooling effect and improving the service life of the structural components in the motor housing 2.

[0029] Therefore, the gas in the air-cooled flow channel 22 of this invention can be self-drawn through the compressed air flow channel 11, meaning that there is no need to set up a separate external pipeline to input cooling airflow into the air-cooled flow channel 22, which greatly reduces the number of external pipelines, lowers installation costs, and improves production efficiency. At the same time, it also avoids reserving too much installation space for external pipelines, preventing the air compressor 100 from having an overly compact structural space.

[0030] According to the embodiment of the present invention, the air compressor 100 can cool the rotor drive component 21 by the cooperation of the air-cooled flow channel 22 and the liquid-cooled flow channel 23, which has higher cooling efficiency and can improve the durability of the rotor drive component 21. Moreover, the air-cooled flow channel inputs air through the compressed air flow channel 11, without the need for external pipelines to input air separately, which has a simple structure and low cost.

[0031] In some embodiments, the air-cooled flow channel 22 includes an outer flow channel 221 and an inner flow channel 222. The outer flow channel 221 communicates with the compressed air flow channel 11 and is located radially outside the rotor drive member 21. The inner flow channel 222 communicates with the outer flow channel 221 and is located radially inside the rotor drive member 21. That is, the rotor drive member 21 can be constructed as a ring structure, with the outer flow channel 221 located outside the ring structure and the inner flow channel 222 located inside the ring structure. The airflow in the compressed air flow channel 11 can enter the outer flow channel 221 and then flow to the rotor drive member 21 through the inner flow channel 222 to achieve cooling of the rotor drive member 21.

[0032] Specifically, such as Figure 3As shown, the compressed air passage 11, the outer passage 221, and the inner passage 222 are connected in sequence. When the rotor drive 21 drives the intake turbine 12 to rotate, the airflow in the compressed air passage 11 enters the outer passage 221 connected to the compressed air passage 11. At this time, the airflow enters the air-cooling passage 22 to cool down the rotor drive 21. After passing through the outer passage 221, the airflow can continue to enter the inner passage 222. At this time, the airflow passes through the rotor drive 21 in the inner passage 222. When the airflow passes through the rotor drive 21, it can carry away the heat emitted by the rotor drive 21, thereby achieving the cooling down of the rotor drive 21.

[0033] Therefore, the air-cooled flow channel 22 can cool the outer side of the rotor drive component 21 through the outer flow channel 221 to remove the heat from the outer side of the motor housing 2 and the rotor drive component 21. Furthermore, it can cool the inner side of the rotor drive component 21 through the inner flow channel 222 to remove the heat from the inner side of the rotor drive component 21, thereby achieving common cooling of both the inner and outer sides of the rotor drive component 21, which helps to expand the cooling range and improve the cooling efficiency.

[0034] In some embodiments, the outer flow channel 221 includes an inlet section 2211, a first branch section 2212, and a second branch section 2213. The inlet end of the inlet section 2211 is connected to the compressed air flow channel 11, and the outlet end of the inlet section 2211 is connected to the first branch section 2212 and the second branch section 2213, respectively. The first branch section 2212 and the second branch section 2213 are respectively connected to the inner flow channel 222 at both ends of the motor housing 2. That is, the airflow can flow from both ends of the rotor drive member 21 through the first branch section 2212 and the second branch section 2213 of the outer flow channel 221.

[0035] Specifically, such as Figures 1-3 As shown, when the intake turbine 12 is started, the airflow can enter the compressor flow passage 11 through the intake turbine 12, and then enter the inlet section 2211 through the compressor flow passage 11 and the inlet end of the inlet section 2211 connected to the compressor flow passage 11. The airflow flows in the inlet section 2211 and when it reaches the outlet end of the inlet section 2211, part of it flows into the first branch section 2212 and the other part flows into the second branch section 2213. The airflow flowing into the first branch section 2212 and the second branch section 2213 can reach the rotor drive component 21 through the inner flow passage 222 respectively, thereby realizing heat dissipation and cooling of the rotor drive component 21 from different positions.

[0036] Therefore, the cooling airflow can flow to the rotor drive 21 from two directions, meaning that the cooling airflow from both directions can cool the rotor drive 21. When the cooling airflow from both directions flows through the rotor drive 21, it can simultaneously carry away the heat from two different locations on the rotor drive 21, thereby enabling the rotor drive 21 to cool down rapidly and accelerating the cooling efficiency of the rotor drive 21.

[0037] In some embodiments, the inlet section 2211 includes a plurality of sequentially connected sub-flow channels 2211a, each sub-flow channel segment 2211a extending axially along the motor housing 2, and the plurality of sub-flow channel segments 2211a being sequentially distributed circumferentially along the motor housing 2, with adjacent sub-flow channel segments 2211a connected by an end arc-shaped segment 2211b. That is, the airflow has a relatively long flow path within the inlet section 2211.

[0038] Specifically, such as Figure 2 As shown, the inlet section 2211 has multiple axially extending sub-flow channel sections 2211a distributed circumferentially around the motor housing 2, and the ends of the multiple sub-flow channel sections 2211a are connected by arc-shaped sections 2211b. This maximizes the length of the inlet section 2211, meaning that the airflow has a large flow path when flowing through the inlet section 2211, thereby maximizing the absorption of heat from the motor housing 2 by the airflow in the air-cooled flow channel 22, so as to dissipate heat and cool the rotor drive component 21.

[0039] This extends the contact time and contact area between the cooling airflow and the motor housing 2 as it flows through the air-cooling channel 22. In other words, the cooling airflow travels along the circumference of the motor housing 2 as it flows through the air-cooling channel 22, allowing for a longer period of heat exchange with the motor housing 2 to cool it. Furthermore, the cooling airflow moving along the circumference of the motor housing 2 can cool different parts of the motor housing 2, minimizing uneven heat dissipation and providing a better cooling effect.

[0040] In some embodiments, the inner flow channel 222 includes a first flow channel section 2221 and a second flow channel section 2222. The first flow channel section 2221 and the second flow channel section 2222 are respectively connected to the first flow branch section 2212 and the second flow branch section 2213 in a one-to-one correspondence. The gas flow direction in the first flow channel section 2221 is opposite to the gas flow direction in the second flow channel section 2222. That is, the airflow in the first flow branch section 2212 and the second flow branch section 2213 can flow to the first flow channel section 2221 and the second flow channel section 2222 respectively, and pass through the rotor drive member 21 during the flow process to achieve cooling of the rotor drive member 21.

[0041] like Figure 3As shown, the intake turbine 12 can draw air into the air compressor 100. The air forms an airflow in the air compressor 100 and flows into the outer flow channel 221 through the compressed air flow channel 11, and then into the inner flow channel 222. Specifically, the airflow flows into the first diversion section 2212 and the second diversion section 2213 in the outer flow channel 221, and then flows into the first flow channel section 2221 and the second flow channel section 2222 through the first diversion section 2212 and the second diversion section 2213, respectively. The first flow channel section 2221 and the second flow channel section 2222 can make the airflow pass through the rotor drive component 21, thereby achieving heat dissipation and cooling of the rotor drive component 21.

[0042] Thus, the cooling airflow passes through the rotor drive component as it flows from the first branch section 2212 to the first flow channel section 2221, and passes through the rotor drive component 21 as it flows from the second branch section 2213 to the second flow channel section 2222. This allows the cooling airflow to carry away the heat emitted by the rotor drive component 21, thereby cooling the rotor drive component 21. Furthermore, the first branch section 2212 and the second branch section 2213 allow the cooling airflow to flow through different positions of the rotor drive component 21 simultaneously, thereby rapidly reducing the temperature of the rotor drive component 21 and improving cooling efficiency.

[0043] In some embodiments, the pressure shell structure 1 is connected to the end of the motor housing 2.

[0044] In this design, the end of the rotor drive component 21 closest to the pressure shell structure 1 is rotatably supported on the motor housing 2 via a first air bearing 211, and the end of the rotor drive component 21 furthest from the pressure shell structure 1 is rotatably supported on the motor housing 2 via a second air bearing 212. A first flow channel section 2221 flows through the first air bearing 211, and a second flow channel section 2222 flows through the second air bearing 212. In other words, both ends of the rotor drive component 21 are supported within the motor housing 2 via the first air bearing 211 and the second air bearing 212, respectively, and the inner flow channel 222 allows airflow to flow towards the first air bearing 211 and the second air bearing 212 to cool and dissipate heat from them.

[0045] Specifically, such as Figure 3 and Figure 4As shown, the first air bearing 211 is disposed inside the motor housing 2 near one end of the pressure shell structure 1, and the second air bearing 212 is disposed at the other end of the motor housing 2. The first flow channel section 2221 and the second flow channel section 2222 flow through the first air bearing 211 and the second air bearing 212. Thus, when the airflow enters the air compressor 100 through the intake turbine 12, it enters the first branch section 2212 and the second branch section 2213 of the outer flow channel 221 through the compressed air flow channel 11. It can also flow through the first flow channel section 2221 and the second flow channel section 2222, which are respectively connected to the first branch section 2212 and the second branch section 2213, through the first air bearing 211 and the second air bearing 212, thereby achieving heat dissipation and cooling of the first air bearing 211 and the second air bearing 212.

[0046] In some embodiments, the first air bearing 211 has a limiting back plate 2111 at one end facing the pressure shell structure 1, and the first flow channel section 2221 and the first flow branch section 2212 are connected through a first end flow channel that passes through the limiting back plate 2111. That is, the first flow branch section 2212 and the first flow channel section 2221 are connected through the first end flow channel.

[0047] Specifically, such as Figure 1 , Figure 3 and Figure 4 As shown, the limiting back plate 2111 is disposed above the first air bearing 211, and the limiting back plate 2111 is provided with a first end flow channel. The left end of the first end flow channel is connected to the first diversion section 2212, and the right end of the first end flow channel is connected to the first flow channel section 2221. Thus, the first diversion section 2212 and the first flow channel section 2221 are connected through the first end flow channel. The airflow in the first diversion section 2212 can flow into the first flow channel section 2221 through the first end flow channel, and then flow from the first flow channel section 2221 to the first air bearing 211 to achieve heat dissipation and cooling of the first air bearing 211.

[0048] And / or, in other embodiments, a bearing housing 24 is provided inside the motor housing 2, a second air bearing 212 is mounted on the bearing housing 24, and the second flow channel section 2222 and the second flow branch section 2213 are connected through a second end flow channel 241 that passes through the bearing housing 24. That is, the second flow branch section 2213 and the second flow channel section 2222 are connected through the second end flow channel 241.

[0049] Specifically, such as Figure 3As shown, the bearing housing 24 is located below the second air bearing 212, that is, the bearing housing 24 can provide support for the second air bearing 212, and the bearing housing 24 is provided with a second end flow channel 241. The left end of the second end flow channel 241 is connected to the second diversion section 2213, and the right end of the second end flow channel 241 is connected to the second flow channel section 2222. Thus, the second diversion section 2213 and the second flow channel section 2222 are connected through the second end flow channel 241. The airflow in the second diversion section 2213 can enter the second flow channel section 2222 through the second end flow channel 241, and then flow from the second flow channel section 2222 to the second air bearing 212 to achieve heat dissipation and cooling of the second air bearing 212.

[0050] Thus, the first end flow channel and the second end flow channel 241 can be connected to the first branch section 2212 and the first flow channel section 2221, and the second branch section 2213 and the second flow channel section 2222, respectively, so that the airflow can flow to the two air bearings at the same time to dissipate heat and cool down the first air bearing 211 and the second air bearing 212.

[0051] In some embodiments, the bearing housing 24 is provided with a cover plate 25 and an air thrust bearing 26 on the side away from the pressure shell structure 1. The cover plate 25 is located on the side of the air thrust bearing 26 away from the bearing housing 24. The second end flow channel 241 passes through the bearing housing 24 and then sequentially passes through the cover plate 25 and the air thrust bearing 26 in the reverse direction, and communicates with the second flow channel section 2222. That is, the air thrust bearing 26 is disposed between the bearing housing 24 and the cover plate 25, and the second end flow channel 241 passes through the bearing housing 24, the cover plate 25 and the air thrust bearing 26.

[0052] Specifically, such as Figure 1 , Figure 3 and Figure 4 As shown, the bearing housing 24, cover plate 25 and air thrust bearing 26 are sequentially arranged below the second air bearing 212, and the second end flow channel 241 passes through the bearing housing 24, cover plate 25 and air thrust bearing 26. Thus, the second diversion section 2213 and the second flow channel section 2222 can be connected through the second end flow channel 241. The airflow enters the second flow channel section 2222 from the second diversion section 2213 through the bearing housing 24, cover plate 25 and air thrust bearing 26, thereby dissipating heat and cooling the second air bearing 212.

[0053] In some embodiments, at least a portion of the liquid cooling channel 23 is located between the outer channel 221 and the rotor drive 21.

[0054] Specifically, such as Figure 1 , Figure 3 and Figure 4As shown, a liquid-cooled flow channel 23 is provided between the outer flow channel 221 and the rotor drive component 21. That is, the rotor drive component 21, the liquid-cooled flow channel 23 and the outer flow channel 221 are arranged sequentially from the inside to the outside along the radial direction of the air compressor 100. Thus, when the airflow flows from the outer flow channel 221 to the rotor drive component 21, it can pass through the liquid-cooled flow channel 23. At this time, the coolant in the liquid-cooled flow channel 23 can absorb the heat of the gas in the air-cooled flow channel 22, thereby reducing the temperature of the gas in the air-cooled flow channel 22 and improving the cooling efficiency of the first air bearing 211 and the second air bearing 212.

[0055] And / or, in some other embodiments, at least a portion of the extension direction of the liquid cooling channel 23 intersects the extension direction of the outer channel 221.

[0056] Specifically, such as Figure 2 As shown, the outer flow channel 221 extends along the axial direction of the air compressor 100, and the liquid cooling flow channel 23 extends along the circumferential direction of the air compressor 100. Thus, the airflow direction in the outer flow channel 221 and the coolant flow direction in the liquid cooling flow channel 23 are perpendicular to each other, thereby increasing the contact area and contact time between the airflow and the coolant. This allows the coolant to fully absorb the heat from the airflow, enabling the airflow to contact the first air bearing 211 and the second air bearing 212 at a lower temperature, thereby improving the cooling efficiency of the first air bearing 211 and the second air bearing 212.

[0057] And / or, in some other embodiments, the motor housing 2 further includes an exhaust passage 27 located outside the rotor drive member 21, with the inner flow channel 222 communicating with the exhaust passage 27. That is, the airflow passing through the first air bearing 211 and the second air bearing 212 can be discharged outward through the exhaust passage 27, so that the airflow can pass through the first air bearing 211 and the second air bearing 212 in a timely manner, thereby ensuring the cooling efficiency of the first air bearing 211 and the second air bearing 212.

[0058] Specifically, such as Figure 4 As shown, the lower end of the exhaust passage 27 is connected to the inner flow passage 222, and the upper end of the exhaust passage 27 is connected to the pressure shell structure 1. When the air compressor 100 is working, the intake turbine 12 can make the airflow flow into the outer flow passage 221 and the inner flow passage 222 in sequence, and after flowing through the first air bearing 211 and the second air bearing 212, it flows to the intake turbine 12 through the exhaust passage 27. The intake turbine 12 can continue to draw in airflow into the air compressor 100 to continue cooling the first air bearing 211 and the second air bearing 212. Thus, the air compressor 100 achieves self-intake and self-exhaust, thereby reducing the setting of other cooling structural components and reducing costs.

[0059] The present invention also proposes a vehicle.

[0060] The vehicle according to embodiments of the present invention includes an air compressor 100 of any of the above embodiments. The rotor drive component 21 is cooled by the cooperation of the air-cooled flow channel 22 and the liquid-cooled flow channel 23, resulting in higher cooling efficiency and improved durability of the rotor drive component 21. Furthermore, the exhaust channel 27 allows airflow to flow into the intake turbine 12, enabling the air compressor 100 to self-blow and self-exhaust air, reducing the need for other structural components, resulting in a simple structure and lower cost.

[0061] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0062] Although embodiments of the invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. An air compressor, characterized in that, include: A pressure shell structure (1) is formed inside the pressure shell structure (1), and an air intake turbine (12) is provided inside the air intake passage (11). Motor housing (2), the motor housing (2) is connected to the pressure shell structure (1), the motor housing (2) is provided with a rotatable rotor drive (21), the rotor drive (21) is connected to the intake turbine (12) to drive the intake turbine (12) to rotate; The motor housing (2) contains an air-cooled flow channel (22) and a liquid-cooled flow channel (23). The air-cooled flow channel (22) is connected to the compressed air flow channel (11). Both the liquid-cooled flow channel (23) and the air-cooled flow channel (22) are used to cool the rotor drive component (21).

2. The air compressor according to claim 1, characterized in that, The air-cooled flow channel (22) includes an outer flow channel (221) and an inner flow channel (222). The outer flow channel (221) is connected to the compressed air flow channel (11). The outer flow channel (221) is located on the radial outer side of the rotor drive member (21). The inner flow channel (222) is connected to the outer flow channel (221) and is located on the radial inner side of the rotor drive member (21).

3. The air compressor according to claim 2, characterized in that, The outer flow channel (221) includes an inlet section (2211), a first branch section (2212), and a second branch section (2213). The inlet end of the inlet section (2211) is connected to the compressed air flow channel (11), and the outlet end of the inlet section (2211) is connected to the first branch section (2212) and the second branch section (2213) respectively. The first branch section (2212) and the second branch section (2213) are respectively connected to the inner flow channel (222) at both ends of the motor housing (2).

4. The air compressor according to claim 3, characterized in that, The inlet section (2211) includes a plurality of sequentially connected sub-flow channels (2211a), each of the sub-flow channels (2211a) extending along the axial direction of the motor housing (2), and the plurality of sub-flow channels (2211a) being sequentially distributed along the circumference of the motor housing (2), with adjacent two sub-flow channels (2211a) connected by an end arc-shaped section (2211b).

5. The air compressor according to claim 3, characterized in that, The inner flow channel (222) includes a first flow channel section (2221) and a second flow channel section (2222). The first flow channel section (2221) and the second flow channel section (2222) are respectively connected to the first flow branch section (2212) and the second flow branch section (2213). The gas flow direction in the first flow channel section (2221) is opposite to the gas flow direction in the second flow channel section (2222).

6. The air compressor according to claim 5, characterized in that, The pressure shell structure (1) is connected to the end of the motor housing (2); The rotor drive component (21) is rotatably supported on the motor housing (2) by a first air bearing (211) at one end near the pressure shell structure (1), and rotatably supported on the motor housing (2) by a second air bearing (212) at the other end away from the pressure shell structure (1). The first flow channel section (2221) flows through the first air bearing (211), and the second flow channel section (2222) flows through the second air bearing (212).

7. The air compressor according to claim 6, characterized in that, The first air bearing (211) has a limiting back plate (2111) at one end facing the pressure shell structure (1), and the first flow channel section (2221) and the first flow branch section (2212) are connected by a first end flow channel that passes through the limiting back plate (2111); And / or, the motor housing (2) is provided with a bearing seat (24), the second air bearing (212) is installed in the bearing seat (24), and the second flow channel section (2222) and the second flow branch section (2213) are connected by a second end flow channel (241) that passes through the bearing seat (24).

8. The air compressor according to claim 7, characterized in that, The bearing housing (24) is provided with a cover plate (25) and an air thrust bearing (26) on the side away from the pressure shell structure (1). The cover plate (25) is located on the side of the air thrust bearing (26) away from the bearing housing (24). The second end flow channel (241) passes through the bearing housing (24) and then passes through the cover plate (25) and the air thrust bearing (26) in reverse order and communicates with the second flow channel section (2222).

9. The air compressor according to claim 2, characterized in that, At least a portion of the liquid cooling channel (23) is located between the outer channel (221) and the rotor drive (21); And / or, at least a portion of the extension direction of the liquid cooling channel (23) intersects the extension direction of the outer channel (221); And / or, the motor housing (2) further includes an exhaust passage (27) located outside the rotor drive (21), and the inner flow channel (222) communicates with the exhaust passage (27).

10. A vehicle, characterized in that, The air compressor included in any one of claims 1-9.

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