Supercharger pressure shell structure and vehicle

Abstract

The application discloses a supercharger pressure shell structure and a vehicle, and relates to the technical field of superchargers, and particularly relates to a supercharger pressure shell structure, which comprises a pressure shell body, a cooling core which is detachably installed on the pressure shell body and in which a cooling flow channel is formed, and a diffuser which is connected to the pressure shell body, wherein the cooling core is located between the pressure shell body and the diffuser and jointly defines a pressure gas flow channel. The supercharger pressure shell structure of the application sets the cooling core, the diffuser and the pressure shell body of the pressure shell structure as a split structure, so that each component can be cast by using a separate casting process, and a single component does not form a closed cavity structure, which greatly reduces the processing difficulty of the inner wall of the pressure gas flow channel, facilitates the inner wall of the pressure gas flow channel to be smoother, reduces coking caused by oil and gas adsorption, improves the pressure gas efficiency, and facilitates the reduction of processing costs.

Description

Technical Field

[0001] This invention relates to the field of turbocharger technology, and more particularly to a turbocharger housing structure and a vehicle having the housing structure. Background Technology

[0002] Turbochargers are a key technology widely used in modern internal combustion engines. They are devices that increase engine power, reduce fuel consumption, and lower emissions by compressing air. A turbocharger comprises five main systems: the turbine end system, the compressor end system, the bearing lubrication system, the cooling system, and the actuator control system. The compressor end system, including the compressor housing, compressor impeller, and intake passage, is responsible for compressing fresh air. The design and manufacturing quality of the compressor housing, especially the surface roughness of its inner wall flow channels, has a decisive impact on the turbocharger's performance, efficiency, and noise. Currently, the surface roughness of the inner wall flow channels in existing compressor housings is too high, resulting in greater airflow resistance. This causes fuel and gas to adhere to the inner wall of the compressor housing and form coke, ultimately reducing compressor efficiency. There is room for improvement in this area. 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 a pressure shell structure for a turbocharger, wherein the pressure shell body, cooling core, and diffuser of the pressure shell structure are installed separately, which helps to reduce the difficulty of processing and allows the inner wall of the compressed air passage of the pressure shell structure to be processed more smoothly, thereby reducing the roughness of the inner wall.

[0004] According to an embodiment of the present invention, the pressure shell structure of the turbocharger includes: a pressure shell body; a cooling core, the cooling core being detachably mounted on the pressure shell body and having a cooling flow channel formed therein; and a diffuser, the diffuser being connected to the pressure shell body, the cooling core being located between the pressure shell body and the diffuser and jointly defining an outlet pressure flow channel.

[0005] According to the embodiment of the present invention, the pressure shell structure of the turbocharger is configured as a separate structure by setting the cooling core, diffuser and pressure shell body of the pressure shell structure, so that each component can be cast by a separate casting process, and no single component forms a closed cavity structure. This greatly reduces the processing difficulty of the inner wall of the compressed air passage, which is conducive to making the inner wall of the compressed air passage smoother, reducing coking formed by oil and gas adsorption, improving the compression efficiency, and reducing processing costs.

[0006] According to some embodiments of the present invention, the pressure shell structure of the turbocharger has a receiving space, the cooling core and the diffuser are sequentially installed in the receiving space, and the cooling core and the diffuser are respectively connected and fixed to the pressure shell body.

[0007] According to some embodiments of the present invention, the pressure shell structure of the turbocharger has a first mounting hole in the main body, which communicates with the accommodating space; a second mounting hole in the cooling core; and a third mounting hole in the diffuser. The first mounting hole, the second mounting hole, and the third mounting hole are sequentially aligned and communicate with each other.

[0008] According to some embodiments of the present invention, the pressure shell structure of the turbocharger further includes a seal, which is installed between the receiving space and the cooling core, and the seal is constructed as an annular member and disposed around the second mounting hole.

[0009] According to some embodiments of the present invention, the pressure shell structure of the turbocharger includes a first accommodating region and a second accommodating region, the inner diameter of the first accommodating region is smaller than the inner diameter of the second accommodating region, the cooling core is installed in the first accommodating region, the diffuser is installed in the second accommodating region, and the sealing member is sandwiched between the inner peripheral wall of the first accommodating region and the outer peripheral wall of the cooling core.

[0010] According to some embodiments of the present invention, the coolant core is detachably connected to the main body of the pressure shell via a first connector in the pressure shell structure of the turbocharger. And / or, the diffuser is interference-fitted with the pressure shell body.

[0011] According to some embodiments of the present invention, the press shell structure of the turbocharger further includes a coolant inlet pipe and a coolant outlet pipe, both of which are connected to the cooling core, and are respectively connected to the cooling channel.

[0012] According to some embodiments of the present invention, the coolant inlet pipe and the coolant outlet pipe of the turbocharger are respectively inserted into the main body of the pressure shell; And / or, the coolant inlet pipe and the coolant outlet pipe are respectively interference-fitted with the cooling core.

[0013] According to some embodiments of the present invention, at least one of the press shell structure of the turbocharger is formed by high pressure casting, wherein the press shell body, the cooling core and the diffuser are formed by high pressure casting.

[0014] The present invention also proposes a vehicle.

[0015] The vehicle according to embodiments of the present invention includes the pressure shell structure of the turbocharger described in any of the above embodiments.

[0016] The vehicle and the aforementioned turbocharger have the same advantages over the prior art in terms of their pressure shell structure, which 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 an exploded view of the pressure shell structure of the turbocharger according to an embodiment of the present invention; Figure 2 This is a schematic diagram of the pressure shell structure of the turbocharger according to an embodiment of the present invention; Figure 3 This is a cross-sectional view of the pressure shell structure of the turbocharger according to an embodiment of the present invention; Figure 4 This is another exploded view of the pressure shell structure of the turbocharger according to an embodiment of the present invention; Figure 5 This is another cross-sectional view of the pressure shell structure of the turbocharger in an embodiment of the present invention.

[0019] Figure label: 100mm pressure shell structure The pressure shell body 1 includes a receiving space 11, a first receiving area 111, a second receiving area 112, and a first mounting hole 12. Cooling core 2, second mounting hole 21, flow channel groove 22, cooling flow channel 23, Diffuser 3, third mounting hole 31, Compressed air passage 41, seal 42, first connector 43, coolant inlet pipe 44, coolant outlet pipe 45. 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] Among related technologies, turbochargers are one of the key technologies widely used in modern internal combustion engines. They are devices that increase engine power, reduce fuel consumption, and lower emissions by compressing air. They utilize the inertial force of the high-temperature, high-pressure exhaust gas from the engine to drive a turbine to rotate at high speed, which in turn drives a coaxial pressure roller. The pressure roller forces the pressurized air into the engine cylinders, thereby significantly increasing the engine's power and torque output without significantly increasing engine displacement. In the current automotive industry context, the rapid development of new energy vehicles has impacted the traditional automotive industry, but the internal combustion engine, as a highly efficient and high-torque power option, still possesses its unique advantages.

[0023] The turbocharger consists of five major systems: the turbine end system, the compressor end system, the bearing lubrication system, the cooling system, and the actuator control system. The compressor end system, including the compressor housing, compressor impeller, and intake passage, is responsible for compressing fresh air. The compressor housing, or simply the compressor casing, is the core structural component and functional carrier of the compressor end system. Its core function is to provide a working chamber for the compressor impeller, efficiently collecting, guiding, and transporting the high-pressure air compressed by the impeller.

[0024] The design and manufacturing quality of the compressor casing, especially the surface roughness of its inner wall flow channels, has a decisive impact on the performance, efficiency, and noise of the turbocharger. Most compressor casings on the market are made using one-piece gravity casting, resulting in high flow channel roughness. This causes high-speed airflow to rub against the wall, generating heat and consuming some of the energy originally intended for compression, leading to decreased compression efficiency. The rough surface and the turbulence and eddies exacerbated by the roughness generate additional airflow noise. Furthermore, due to the rough compressor flow channels, oil and gas can adhere to the inner wall of the compressor casing and form coke, ultimately reducing compressor efficiency.

[0025] Based on this, the present invention proposes a compressor housing structure 100, wherein each of the main components of the compressor housing structure 100 is a structural component that can be formed separately. Before the compressor housing structure 100 is assembled, each main component can be processed separately, which reduces the processing difficulty of individual components and makes it easier to enhance the surface finish of the components, thereby reducing the roughness of the inner wall of the compressed air passage 41 of the compressor housing structure 100, reducing airflow resistance, and ensuring the efficiency of the compressor.

[0026] like Figures 1-5 As shown, the pressure shell structure 100 of the turbocharger according to some embodiments of the present invention includes: a pressure shell body 1, a cooling core 2, and a diffuser 3.

[0027] The compressor housing 1 is the core component of the turbocharger's compressor system. Its main function is to house the compressor impeller and form the compressed air passage 41. The internal design of the compressor housing 1 is volute-shaped, using centrifugal force to convert the kinetic energy of the air output from the high-speed rotating impeller into pressure energy, increasing the air pressure to 1.5-3 atmospheres before it is sent into the engine's intake manifold. The cooling core 2 is detachably installed on the compressor housing 1. Before being installed on the compressor housing 1, the cooling core 2 is an independent structural component. It can be connected to the compressor housing 1 by screws, riveting, or other methods. The cooling core 2 contains cooling channels 23, which can be one, two, or more. Cooling medium flows through the cooling channels 23 to dissipate heat generated within the compressor housing 1, keeping it at a lower temperature and extending its service life. The cooling medium can be cooling water or other forms of fluid.

[0028] The diffuser 3 is connected to the compressor body 1 and is located at the impeller outlet of the compressor. It can be composed of a bladeless diffuser and a bladed diffuser. The bladeless diffuser reduces the airflow velocity and increases the pressure through the annular space. The triangular blades of the bladed diffuser further convert kinetic energy into pressure energy.

[0029] The cooling core 2 is located between the pressure shell body 1 and the diffuser 3, jointly defining the compressed air flow channel 41. That is, the cooling core 2 and the diffuser 3 can be sequentially installed on the pressure shell body 1, so that the three components—cooling core 2, diffuser 3, and pressure shell body 1—jointly define the compressed air flow channel 41. In other words, the three components—cooling core 2, diffuser 3, and pressure shell body 1—are not integrally formed; they can be formed independently, and each can be constructed as part of the compressed air flow channel 41. Specifically, the inner wall of the compressed air flow channel 41 can include a portion of the inner wall of the cooling core 2, a portion of the inner wall of the pressure shell body 1, and a portion of the inner wall of the diffuser 3. This allows the inner walls of the cooling core 2, the pressure shell body 1, and the diffuser 3 used to form the inner wall of the compressed air flow channel 41 to be formed separately, enabling each portion of the inner wall to be processed using advanced machining techniques, thereby improving machining precision and reducing the surface roughness of the compressed air flow channel 41.

[0030] Among them, such as Figure 1 and Figure 4 As shown, a flow channel groove 22 is provided on the outer peripheral wall of the cooling core 2. The flow channel groove 22 is used to form a compressed air flow channel 41 together with the wall surface of the diffuser 3 and the pressure shell body 1.

[0031] Therefore, the surface roughness of the inner wall of the compressed air passage 41 can be reduced during processing. For example, the cooling core 2, diffuser 3, and pressure shell body 1 can all be formed using a high-pressure die-casting process with both inner and outer molds made of metal, thereby reducing the surface roughness of each structural component. Furthermore, the cooling core 2, diffuser 3, and pressure shell body 1 are separate structures, avoiding the formation of a closed structure. Core-pulling or mold-removal operations can be performed after casting, further reducing roughness and preventing the inner wall of the compressed air passage 41 from adsorbing oil and gas and forming coke, thus improving the compressor's compression efficiency. Simultaneously, compared to gravity casting followed by abrasive flow grinding to reduce the inner wall roughness of the pressure shell structure 100, this design approach requires lower setup costs, reduces the use of grinding machines, and eliminates the need for cleaning the viscous abrasive media during grinding, significantly improving processing efficiency.

[0032] According to the embodiment of the present invention, the pressure shell structure 100 of the turbocharger is configured as a split structure by setting the cooling core 2, the diffuser 3 and the pressure shell body 1 of the pressure shell structure 100 as a separate structure, so that each component can be cast by a separate casting process, and a single component does not form a closed cavity structure, which greatly reduces the processing difficulty of the inner wall of the compressed air passage 41, makes it easier to make the inner wall of the compressed air passage 41 smoother, reduces coking formed by oil and gas adsorption, improves the compression efficiency, and helps to reduce processing costs.

[0033] In some embodiments, the press shell body 1 forms a receiving space 11, and the cooling core 2 and the diffuser 3 are sequentially installed in the receiving space 11. The cooling core 2 and the diffuser 3 are respectively connected and fixed to the press shell body 1, so that the receiving space 11 can be constructed as an open space, allowing the cooling core 2 and the diffuser 3 to be installed as separate components in the receiving space 11. This enables the separate processing and molding of the components before installation and integration, which helps to reduce the installation difficulty of individual structural components.

[0034] Among them, such as Figure 1 , Figure 3 , Figure 4 and Figure 5 As shown, the accommodating space 11 can be configured to be open on one side of the pressure shell body 1, such as... Figure 1 The central accommodating space 11 is open to the right, and the cooling core 2 can be installed in the accommodating space 11 facing left. The diffuser 3 can be further installed in the accommodating space 11 facing left, so that the cooling core 2 and the diffuser 3 are both installed in the accommodating space 11 to form an integral structure, so as to form a common compressed air flow channel 41.

[0035] Specifically, such as Figure 3 and Figure 5 As shown, after the cooling core 2 and the diffuser 3 are installed inside the pressure shell body 1, the radial outer side of the cooling core 2, the left side of the diffuser 3, and the inner wall of the pressure shell body 1 together define the compressed air flow channel 41. That is, the radial outer side of the cooling core 2, the left side of the diffuser 3, and the inner wall of the pressure shell body 1 can be integrated and assembled after being machined into inner wall surfaces with lower roughness to form the compressed air flow channel 41. This makes the inner wall of the compressed air flow channel 41 smoother and improves the air compression efficiency.

[0036] In some embodiments, the pressure shell body 1 is provided with a first mounting hole 12, which communicates with the accommodating space 11. The cooling core 2 is provided with a second mounting hole 21, and the diffuser 3 is provided with a third mounting hole 31. The first mounting hole 12, the second mounting hole 21, and the third mounting hole 31 are sequentially connected to each other. It should be noted that after the cooling core 2 and the diffuser 3 are installed in the accommodating space 11, a compressor turbine can be installed at the diffuser 3, and a motor structure can be installed in the pressure shell body 1 and the cooling core 2 to drive the compressor turbine to rotate, so that the compressor turbine can realize the compression process during rotation.

[0037] The compressor turbine can be installed at the third mounting hole 31, and the motor structure passes through the first mounting hole 12 and the second mounting hole 21, so that the compressor turbine is connected to the output shaft of the motor structure, thereby enabling the motor structure to drive the compressor turbine to rotate. Therefore, the first mounting hole 12, the second mounting hole 21, and the third mounting hole 31 can all be formed separately on individual structural components, which increases the machining difficulty of the first mounting hole 12, the second mounting hole 21, and the third mounting hole 31, and improves the structural installation accuracy.

[0038] In some embodiments, the pressure shell structure 100 further includes a seal 42, which is installed between the receiving space 11 and the cooling core 2. The seal 42 is constructed as an annular member and is disposed around the second mounting hole 21. In this way, the seal 42 can play a sealing role between the pressure shell body 1 and the cooling core 2 to ensure that the axial sides of the outer periphery of the cooling core 2 are relatively closed.

[0039] Specifically, such as Figure 3 and Figure 5 As shown, the sealing element 42 is located on the outside of the cooling core 2, and a compressed air passage 41 is formed at the axial right end of the cooling core 2, while the axial left end of the cooling core 2 is an open area connected to the pressure shell body 1. By setting the sealing element 42, the compressed air passage 41 on the right side of the cooling core 2 can be effectively sealed and isolated from its left end area. In this way, the compressed air passage 41 can be kept in a relatively closed state, and there will be no gas leakage during the compression process, thus ensuring the compression efficiency.

[0040] The sealing element 42 can be constructed as an elastic sealing ring, and the sealing element 42 extends along the circumference of the cooling core 2 so that the cooling core 2 can be effectively sealed at all positions in the circumference direction.

[0041] In some embodiments, the accommodating space 11 includes a first accommodating region 111 and a second accommodating region 112. The inner diameter of the first accommodating region 111 is smaller than the inner diameter of the second accommodating region 112. The cooling core 2 is installed in the first accommodating region 111, and the diffuser 3 is installed in the second accommodating region 112. That is, the cooling core 2 and the diffuser 3 can be installed sequentially in the first accommodating region 111 and the second accommodating region 112, so that the cooling core 2 and the diffuser 3 are respectively installed on the pressure shell body 1 and form different radial dimensions with the pressure shell body 1, thereby allowing the two to adopt different installation methods and realizing the richness of structural installation.

[0042] Specifically, such as Figure 1 , Figure 3 , Figure 4 and Figure 5As shown, the first receiving area 111 is connected to the first mounting hole 12, and the second receiving area 112 is connected to the end of the first receiving area 111 away from the first mounting hole 12. The inner diameter of the first receiving area 111 is larger than the inner diameter of the first mounting hole 12, and the inner diameter of the second receiving area 112 is larger than the inner diameter of the first receiving area 111. In this way, the motor structure, cooling core 2 and diffuser 3 can all form different structural dimensions of installation fit with the pressure shell body 1.

[0043] The sealing element 42 is sandwiched between the inner peripheral wall of the first receiving area 111 and the outer peripheral wall of the cooling core 2, thus the sealing element 42 is constructed as an elastic sealing ring. The elastic sealing ring is sleeved on the outside of the cooling core 2 to elastically press against the inner peripheral wall of the first receiving area 111, thereby enabling the sealing element 42 to play a sealing role between the inner peripheral wall of the first receiving area 111 and the outer peripheral wall of the cooling core 2, ensuring the sealing performance of the compressed air passage 41.

[0044] Furthermore, in actual installation, a sealing groove can be provided on the inner peripheral wall of the first receiving area 111 and the outer peripheral wall of the cooling core 2 to install the sealing element 42 in the sealing groove, thereby limiting the installation of the sealing element 42 and ensuring that the sealing element 42 is fixed in the axial direction. This can prevent the sealing element 42 from moving axially under the pressure of the compressed air passage 41, thus ensuring the sealing effect of the sealing element 42.

[0045] The sealing element 42 can be set as one, two or more, that is, the number of sealing elements 42 can be flexibly set according to the actual sealing requirements to achieve different sealing effects.

[0046] In some embodiments, the cooling core 2 is detachably connected to the press body 1 via a first connector 43, that is, the cooling core 2 can be disassembled and replaced relative to the press body 1. The cooling core 2 has a cooling channel 23 formed inside it, and when the cooling channel 23 is blocked, the cooling core 2 can be detached from the press body 1 for flexible replacement.

[0047] The first connector 43 can be configured as a bolt, snap-fit, or other type of connector, offering flexible options for connection methods. For example... Figure 3 As shown, the first connector 43 can be constructed as a bolt, and the pressure shell body 1 is provided with a through hole, and the cooling core 2 is provided with a connecting hole. The bolt passes through the through hole and is threadedly connected to the connecting hole, so that the cooling core 2 can be connected and fixed relative to the pressure shell body 1.

[0048] Furthermore, during actual installation, multiple first connectors 43 can be provided, such as two, three, or more first connectors 43, and multiple first connectors 43 can be distributed sequentially in the circumferential direction of the cooling core 2 to enhance the connection strength between the cooling core 2 and the pressure shell body 1 and improve the connection stability between the two.

[0049] And / or, in some embodiments, the diffuser 3 is interference-fitted with the pressure shell body 1, such as... Figure 3 and Figure 5 As shown, the right side of the pressure shell body 1 is open, meaning the second receiving area 112 has an open mounting port, allowing the diffuser 3 to be press-fitted into the second receiving area 112. In other words, the outer peripheral wall of the diffuser 3 is interference-fitted with the inner peripheral wall of the second receiving area 112 to reduce the gap between them. Thus, after the diffuser 3 is installed in the pressure shell body 1, it and the cooling core 2 together define the compressed air flow channel 41. The compressed air flow channel 41 is a relatively closed space, thereby ensuring the sealing of the compressed air flow channel 41 and ensuring the compression efficiency.

[0050] The interference fit between the diffuser 3 and the pressure shell body 1 not only improves the structural sealing performance, but also reduces the number of connecting parts required at this location, thereby reducing the installation cost.

[0051] In some embodiments, the pressure shell structure 100 further includes a coolant inlet pipe 44 and a coolant outlet pipe 45, both of which are connected to the cooling core 2 and are respectively connected to the cooling channel 23. Thus, the cooling channel 23 in the cooling core 2 can be connected to the external cooling path through the coolant inlet pipe 44 and the coolant outlet pipe 45, thereby forming a circulation loop between the cooling channel 23 and the external path, which facilitates the continuous supply of coolant to the cooling core 2 and ensures the cooling effect of the cooling core 2.

[0052] The coolant inlet pipe 44 and coolant outlet pipe 45 can also be installed on the pressure shell body 1 after being formed separately, and then connected and fixed with the cooling core 2. This can reduce the processing difficulty of the coolant inlet pipe 44 and coolant outlet pipe 45 and reduce the processing cost.

[0053] In actual installation, such as Figure 1 , Figure 2 and Figure 5 As shown, both the coolant inlet pipe 44 and the coolant outlet pipe 45 can be connected to the side of the pressure shell body 1 away from the diffuser 3 to connect with the cooling core 2, thereby avoiding interference between the installation position of the diffuser 3 and the connection between the coolant inlet pipe 44 and the coolant outlet pipe 45 and the cooling core 2, and ensuring the rationality of the structural installation.

[0054] In some embodiments, the coolant inlet pipe 44 and the coolant outlet pipe 45 are respectively inserted into the pressure shell body 1 so that the coolant inlet pipe 44 and the coolant outlet pipe 45 are respectively fitted with the pressure shell body 1 at the mating position, which facilitates insertion and installation and improves installation efficiency.

[0055] The coolant inlet pipe 44 and coolant outlet pipe 45 can be arranged side by side and fixed relative to the pressure shell body 1 in the same way, which reduces the installation difficulty and improves the installation efficiency.

[0056] And / or, in some embodiments, the coolant inlet pipe 44 and the coolant outlet pipe 45 are respectively interference-fitted with the cooling core 2, which reduces the installation difficulty and ensures the sealing of the inlet and outlet.

[0057] In some embodiments, at least one of the pressure shell body 1, cooling core 2, and diffuser 3 is formed by high-pressure casting. For example, the pressure shell body 1 is formed by high-pressure casting, or the cooling core 2 is formed by high-pressure casting, or the diffuser 3 is formed by high-pressure casting, or at least two of the three components are formed by high-pressure casting. This allows the pressure shell body 1, cooling core 2, and diffuser 3 to be flexibly formed by high-pressure casting, and the portion of each component used to form the compressed air passage 41 is not a closed structure. This allows each component to be core-pulled or demolded after high-pressure casting, thereby improving the smoothness of the inner wall of the portion of each component used to form the compressed air passage 41, and thus improving the compression efficiency.

[0058] This effectively reduces the roughness of the inner wall of the compressed gas flow channel 41 in the pressure shell structure 100, avoiding a decrease in compression efficiency due to high inner wall roughness. Furthermore, it ensures effective cooling of the compressed gas and the inner wall of the pressure shell body 1, preventing oil and gas, along with high-temperature gases, from entering the pressure shell body 1 and undergoing compression, resulting in coking on the compressed gas flow channel 41, diffuser 3, and wheel housing mating surfaces, thus improving overall compression efficiency.

[0059] The present invention also proposes a vehicle.

[0060] The vehicle according to the present invention includes a turbocharger housing structure 100 of any of the above embodiments. By setting the cooling core 2, diffuser 3 and housing body 1 of the housing structure 100 as a separate structure, each component can be cast using a separate casting process, and no single component forms a closed cavity structure. This greatly reduces the processing difficulty of the inner wall of the compressed air passage 41, which is conducive to making the inner wall of the compressed air passage 41 smoother, reducing coking formed by oil and gas adsorption, improving air compression efficiency, and reducing processing costs.

[0061] Therefore, when a turbocharger with the pressure shell structure 100 is applied to a vehicle engine, it can ensure air compression efficiency, improve vehicle fuel consumption, and increase the overall vehicle range.

[0062] 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.

[0063] 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. A pressure shell structure (100) for a turbocharger, characterized in that, include: The main body of the pressure shell (1); Cooling core (2), the cooling core (2) is detachably installed on the pressure shell body (1), and a cooling flow channel (23) is formed inside the cooling core (2); A diffuser (3) is connected to the pressure shell body (1), and a cooling core (2) is located between the pressure shell body (1) and the diffuser (3) and together define a compressed air flow channel (41). The pressure shell body (1) forms a receiving space (11), the cooling core (2) and the diffuser (3) are installed in the receiving space (11) in sequence, and the cooling core (2) and the diffuser (3) are respectively connected and fixed to the pressure shell body (1); The pressure shell body (1) is provided with a first mounting hole (12), which is connected to the accommodating space (11). The cooling core (2) is provided with a second mounting hole (21), and the diffuser (3) is provided with a third mounting hole (31). The first mounting hole (12), the second mounting hole (21), and the third mounting hole (31) are connected to each other in sequence. It also includes a seal (42) installed between the receiving space (11) and the cooling core (2), the seal (42) being constructed as an annular member and disposed around the second mounting hole (21); The accommodating space (11) includes a first accommodating area (111) and a second accommodating area (112). The inner diameter of the first accommodating area (111) is smaller than the inner diameter of the second accommodating area (112). The cooling core (2) is installed in the first accommodating area (111). The diffuser (3) is installed in the second accommodating area (112). The sealing member (42) is sandwiched between the inner peripheral wall of the first accommodating area (111) and the outer peripheral wall of the cooling core (2). It also includes a coolant inlet pipe (44) and a coolant outlet pipe (45), both of which are connected to the cooling core (2) and are respectively connected to the cooling channel (23).

2. The pressure shell structure (100) of the turbocharger according to claim 1, characterized in that, The cooling core (2) and the pressure shell body (1) are detachably connected by a first connector (43); And / or, the diffuser (3) is interference-fitted with the pressure shell body (1).

3. The pressure shell structure (100) of the turbocharger according to claim 1, characterized in that, The coolant inlet pipe (44) and the coolant outlet pipe (45) are respectively installed in the pressure shell body (1); And / or, the coolant inlet pipe (44) and the coolant outlet pipe (45) are respectively interference-fitted with the cooling core (2).

4. The pressure shell structure (100) of the turbocharger according to claim 1, characterized in that, At least one of the pressure shell body (1), the cooling core (2) and the diffuser (3) is formed by high pressure casting.

5. A vehicle, characterized in that, The pressure shell structure (100) of the turbocharger included in any one of claims 1-4.

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