Turbine shell capable of preventing mutual interference of airflow

Abstract

The utility model provides a turbine casing for preventing mutual interference of airflow, which comprises a volute, a turbine cavity, an air inlet channel, an exhaust channel and a first vortex-shaped air distribution channel are arranged on the volute, the turbine cavity is arranged in the volute, the air inlet channel, the first vortex-shaped air distribution channel, the turbine cavity and the exhaust channel are communicated in sequence, and a straight exhaust channel and a valve mounting part are further arranged on the volute; the straight exhaust passage is used for communicating the air inlet passage with the air outlet passage, and the valve mounting part is arranged on the straight exhaust passage; the turbine further comprises an annular air guide cylinder, the first end of the annular air guide cylinder is fixedly connected to the inner wall of the volute, the second end of the annular air guide cylinder extends towards the side away from the turbine cavity, an annular air channel is formed in the outer side of the annular air guide cylinder, and the annular air channel communicates with the exhaust channel. According to the bypass valve, the gas in the straight exhaust channel is guided through the annular gas guide channel, so that the gas exhausted from the exhaust channel is smoothly collected into the exhaust channel, generation of turbulent flow is reduced, gas pressure fluctuation is reduced, and the opening and closing stability of the bypass valve is improved.

Description

Technical Field

[0001] This utility model relates to the field of engine turbocharger technology, specifically to a turbine housing that prevents airflow from interfering with each other. Background Technology

[0002] Turbochargers fully utilize the thermal, kinetic, and pressure energy contained in the high-temperature exhaust gases from the exhaust pipe, driving a turbine to rotate at high speed. This, in turn, drives the compressor impeller on the same shaft to rotate at high speed, increasing the air density entering the engine cylinders, thus increasing the engine's intake volume, improving engine power, reducing fuel consumption, decreasing exhaust pollution, and lowering emissions, resulting in energy saving and environmental protection benefits. Furthermore, this technology is an important means of restoring engine power in high-altitude areas, enabling engines to adapt to the operating requirements of different altitudes.

[0003] Currently, common turbochargers with bypass valves do not have an anti-interference cavity structure designed for the exhaust outlet of the turbine housing. Exhaust gas that does not participate in expansion and work is directly discharged through the vent valve hole on the turbine housing, and merges with the exhaust gas after normal expansion and work at the turbine hub, causing airflow interference, affecting the opening and closing of the vent valve, and having a certain impact on the matching operation of the turbocharger and the engine, generating airflow noise, and greatly reducing the comfort of the turbocharger.

[0004] In summary, there is an urgent need for a turbine that prevents airflow interference, which can solve or at least partially solve the problems existing in the prior art. Utility Model Content

[0005] The purpose of this utility model is to provide a turbine housing that prevents mutual interference of airflows. This addresses the problem in existing equipment where the gas discharged from the exhaust outlet and the gas discharged directly from the vent valve without performing work collide, creating turbulence and causing pressure fluctuations near the bypass valve, resulting in unstable opening and closing of the bypass valve. The specific technical solution is as follows:

[0006] A turbine housing for preventing airflow interference includes a vortex housing. The vortex housing has a turbine cavity, an intake duct, an exhaust duct, and a first vortex-shaped air distribution duct. The turbine cavity is located within the vortex housing. The first vortex-shaped air distribution duct is arranged circumferentially around the turbine cavity, and its inner side communicates with the turbine cavity. The exhaust duct is arranged axially along the vortex housing, with its first end communicating with the turbine cavity and its second end extending outwards from the vortex housing in a direction away from the turbine cavity. The first end of the intake duct communicates with the first vortex-shaped air distribution duct, and its second end extends into the vortex housing. The external arrangement includes a straight exhaust channel and a valve mounting part on the turbine housing; the first end of the straight exhaust channel is connected to the intake channel or the first vortex-shaped air distribution channel, the second end of the straight exhaust channel is connected to the exhaust channel, and the valve mounting part is arranged in the middle of the straight exhaust channel; it also includes an annular air guide tube, which is arranged inside the turbine housing, and the first end of the annular air guide tube is fixedly connected to the inner wall of the turbine housing, the second end of the annular air guide tube extends toward the side away from the turbine cavity, and an annular air passage is formed between the outer wall of the annular air guide tube and the inner wall of the exhaust end of the straight exhaust channel, and the annular air passage is connected to the exhaust channel.

[0007] Furthermore, the direct exhaust channel includes an intake section and an exhaust section, with a valve mounting part arranged at the connection between the intake section and the exhaust section. The end of the intake section away from the valve mounting part is connected to the intake channel or the first vortex air distribution channel, and the end of the exhaust section away from the valve mounting part is connected to the exhaust channel.

[0008] Furthermore, a guide surface is provided at the end of the exhaust section near the annular air guide tube.

[0009] Furthermore, the air intake duct is connected to the air intake end of the first vortex air distribution duct, and the air intake duct is arranged tangentially along the first vortex air distribution duct.

[0010] Furthermore, it also includes a second vortex air distribution channel, which is arranged side by side with the first vortex air distribution channel, and the inner side of the second vortex air distribution channel is connected to the turbine cavity and the second vortex air distribution channel is connected to the intake section.

[0011] Furthermore, the turbine housing also includes a connecting column, the first end of which is connected to the inner wall of the turbine housing, and the second end of which is fixedly connected to the end of the annular air guide tube away from the turbine cavity.

[0012] Furthermore, multiple connecting columns are arranged, with the multiple connecting columns arranged at intervals along the annular air guide tube.

[0013] Furthermore, a screw mounting part is arranged at the exhaust port of the vortex exhaust passage. Multiple screw mounting parts are arranged at intervals around the end of the exhaust passage away from the first vortex air distribution passage.

[0014] Furthermore, the screw mounting parts are arranged in a one-to-one correspondence with the connecting posts.

[0015] Furthermore, multiple reinforcing ribs are arranged on the outer wall of the vortex shell, and these multiple reinforcing ribs are arranged at intervals along the circumference of the vortex shell.

[0016] The application of the technical solution of this utility model has the following beneficial effects:

[0017] Through the above design, the gas discharged from the direct exhaust channel flows along the annular air passage at the end of the direct exhaust channel and enters the exhaust passage tangentially along the annular air passage. The gas passing through the turbine chamber is discharged from the exhaust passage. The two airflows flow in tangential directions, so no severe turbulence is generated. This allows the gas discharged from the turbine chamber and the gas discharged from the direct exhaust channel to flow stably, making the gas pressure in the direct exhaust channel tend to be stable. This allows the bypass valve to work stably. Furthermore, because the turbulence is reduced, the noise generated by air vibration is further reduced, making the turbocharger quieter during operation. In addition, the reduction of vibration further improves the service life of the turbine housing and reduces the failure rate.

[0018] In addition to the objectives, features, and advantages described above, this utility model has other objectives, features, and advantages. These will be described below with reference to... Figures 1-4 The present invention will be described in further detail below. Attached Figure Description

[0019] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an undue limitation of the present invention. In the drawings:

[0020] Figure 1 This is a schematic diagram of the overall structure of a turbine housing for preventing mutual interference of airflow according to this utility model.

[0021] Figure 2 This is one of the internal structural diagrams of a turbine housing for preventing mutual interference of airflow according to this utility model;

[0022] Figure 3 yes Figure 2 Enlarged view of point A in the middle;

[0023] Figure 4 This is the second schematic diagram of the internal structure of a turbine housing for preventing mutual interference of airflow according to this utility model.

[0024] Among them, 1. volute casing; 11. turbine cavity; 12. intake duct; 13. exhaust duct; 14. first volute air distribution duct; 15. straight exhaust duct; 151. intake section; 152. exhaust section; 1521. guide surface; 16. valve mounting part; 17. second volute air distribution duct; 18. screw mounting part; 19. reinforcing rib; 2. annular air guide tube; 3. connecting column. Detailed Implementation

[0025] To facilitate understanding of this invention, a more comprehensive description is provided below, along with preferred embodiments. However, this invention can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of the disclosure of this invention.

[0026] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

[0027] Example:

[0028] See Figures 1-4 This embodiment provides a turbine housing to prevent airflow interference, including a turbine housing 1. The turbine housing 1 is provided with a turbine cavity 11, an intake duct 12, an exhaust duct 13, and a first vortex-shaped air distribution duct 14. The turbine cavity 11 is disposed inside the turbine housing 1. The first vortex-shaped air distribution duct 14 is arranged circumferentially around the turbine cavity 11, and the inner side of the first vortex-shaped air distribution duct 14 communicates with the turbine cavity 11. The exhaust duct 13 is arranged axially along the turbine housing 1, and the first end of the exhaust duct 13 communicates with the turbine cavity 11, while the second end of the exhaust duct 13 extends outward from the turbine housing 1 in a direction away from the turbine cavity 11. The first end of the intake duct 12 communicates with the first vortex-shaped air distribution duct 14. The two ends extend to the outside of the turbine housing 1. The turbine housing 1 is also provided with a straight exhaust channel 15 and a valve mounting part 16. The first end of the straight exhaust channel 15 is connected to the intake channel 12 or the first vortex-shaped air distribution channel 14, and the second end of the straight exhaust channel 15 is connected to the exhaust channel 13. The valve mounting part 16 is arranged in the middle of the straight exhaust channel 15. It also includes an annular air guide tube 2, which is arranged inside the turbine housing 1. The first end of the annular air guide tube 2 is fixedly connected to the inner wall of the turbine housing 1, and the second end of the annular air guide tube 2 extends toward the side away from the turbine cavity 11. An annular air passage is formed between the outer wall of the annular air guide tube 2 and the inner wall of the exhaust end of the straight exhaust channel 15, and the annular air passage is connected to the exhaust channel 13.

[0029] Specifically, the valve mounting section 16 is used to install a bypass valve, which allows excess gas to be discharged directly from the bypass valve through the exhaust passage 13. The turbine chamber 11 is used to install a turbine. Gas enters the turbine chamber 11 from the first vortex air distribution passage 14, and after driving the turbine to rotate, the airflow velocity decreases, and finally it is discharged from the exhaust passage 13.

[0030] It should be noted that in the original design, the gas flowing out of the bypass valve flows directly and vertically to the exhaust port of exhaust duct 13, causing the pressure at the exhaust port to rise and creating turbulence. This turbulence easily leads to pressure fluctuations at the exhaust port, resulting in unstable bypass valve operation and potential malfunctions. However, the new design allows the gas exiting from the direct exhaust channel to flow along the annular air passage at the end of the direct exhaust channel and enter the exhaust duct 13 tangentially. The gas passing through the turbine chamber 11 exits from the exhaust duct 13. Since the two airflows flow tangentially, severe turbulence is avoided, allowing both the gas exiting the turbine chamber 11 and the gas exiting the direct exhaust channel 15 to flow stably. This stabilizes the gas pressure in the direct exhaust channel 15, enabling the bypass valve to operate stably. Furthermore, the reduced turbulence further reduces noise from air vibrations, making the turbocharger quieter during operation. Additionally, the reduced vibration further extends the lifespan of the turbine housing and lowers the failure rate.

[0031] It is worth noting that the turbine chamber 11 has an opening at the end away from the exhaust port 13, through which the turbine can be easily installed into the turbine chamber 11.

[0032] Furthermore, the direct exhaust duct 15 includes an intake section 151 and an exhaust section 152. A valve mounting part 16 is arranged at the connection between the intake section 151 and the exhaust section 152. The end of the intake section 151 away from the valve mounting part 16 is connected to the intake duct 12, and the end of the exhaust section 152 away from the valve mounting part 16 is connected to the exhaust duct 13.

[0033] Specifically, the valve mounting part 16 is used to install a bypass valve, which controls the opening and closing of the direct discharge channel 15. When the bypass valve is open, the gas can be directly discharged through the direct discharge channel 15 and through the exhaust channel 13.

[0034] It is known that, through the intake section 151, a portion of the gas in the intake manifold 12 is directly discharged from the exhaust manifold 13 through the exhaust section 152 under the control of the bypass valve, to prevent excessive pressure in the turbine and protect the turbine for safe operation.

[0035] It should be noted that in some other embodiments of this application, the intake section 151 is connected to the first vortex air distribution channel 14, and part of the gas entering the first vortex air distribution channel 14 is directly discharged from the exhaust channel 13 through the intake section 151 and the exhaust section 152.

[0036] Furthermore, a guide surface 1521 is provided at one end of the exhaust section 152 near the annular air guide tube 2.

[0037] Specifically, in this embodiment, the guide surface 1521 is a conical surface. It is understood that by connecting the conical surface to the cylindrical surface at the end of the exhaust section 152, the conical surface guides the gas in the annular air passage, making the gas flow direction in the annular air passage tangent to or forming a small angle with the gas flow direction in the exhaust passage 13. This minimizes the collision between the gas flowing out of the exhaust passage 13 and the gas flowing out of the annular air passage, reducing turbulence generation.

[0038] Furthermore, the air intake duct 12 is connected to the air intake end of the first vortex air distribution duct 14, and the air intake duct 12 is arranged tangentially along the first vortex air distribution duct 14.

[0039] It is understood that by tangentially arranging the intake duct 12 and the first vortex air distribution duct 14, the gas entering from the intake duct 12 can smoothly transition into the first vortex air distribution duct 14, reducing the generation of turbulence during airflow, thereby reducing the energy loss of airflow during the flow process and reducing the noise of airflow.

[0040] Furthermore, it also includes a second vortex air distribution channel 17, which is arranged side by side with the first vortex air distribution channel 14, and the inner side of the second vortex air distribution channel 17 is connected to the turbine cavity 11, and the second vortex air distribution channel 17 is connected to the intake section 151.

[0041] It can be seen that by arranging the first vortex air distribution channel 14 and the second vortex air distribution channel 17 side by side, the turbine operates simultaneously under the drive of both channels. Because the gas in both channels simultaneously drives the same turbine, the turbine generates more power during rotation, resulting in a faster turbine response, reduced turbine lag, and more efficient utilization of exhaust gas energy, thus improving the turbocharger's efficiency. When the pressure in the second vortex air distribution channel 17 is too high, the excess gas can be discharged through the intake section 151 to reduce the pressure.

[0042] Furthermore, the turbine housing also includes a connecting post 3, the first end of which is connected to the inner wall of the turbine housing 1, and the second end of which is fixedly connected to the end of the annular air guide tube 2 away from the turbine cavity 11.

[0043] As we know, because the turbine is driven by the exhaust gas from the engine, the temperature of the gas entering the turbine is extremely high. The annular air guide 2 is located inside the turbine housing. Because the annular air guide 2 extends upwards, if the end of the annular air guide 2 furthest from the turbine cavity 11 is not secured, its strength will decrease under the high-temperature baking effect, and the upper end of the air guide 2 will be relatively weak, easily leading to damage. The connection post 3 increases the stability of the connection between the upper end of the annular air guide 2 and the turbine housing, improves the rigidity of the upper end of the annular air guide 2, and extends the service life of the annular air guide 2.

[0044] Furthermore, multiple connecting columns 3 are arranged, and the multiple connecting columns 3 are evenly spaced along the annular air guide tube 2.

[0045] It is known that by evenly spaced multiple connecting columns 3 along the upper end of the annular air guide tube 2, the various positions around the circumference of the annular air guide tube 2 are simultaneously reinforced by the multiple connecting columns 3. On the one hand, the structural strength of the annular air guide tube is improved, and on the other hand, the thickness of the annular air passage at the end of the exhaust section 152 is made uniform, so that the airflow in the annular air passage is stable.

[0046] Furthermore, a screw mounting part 18 is arranged at the exhaust port of the exhaust duct 13 of the vortex housing 1. Multiple screw mounting parts 18 are arranged, and the multiple screw mounting parts 18 are evenly spaced around the end of the exhaust duct 13 away from the first vortex air distribution duct 14.

[0047] It is understood that the turbine housing can be easily connected to the vehicle's exhaust pipe by means of the screw mounting part 18, so that the gas in the exhaust pipe 13 can smoothly enter the vehicle's exhaust pipe and be discharged from the exhaust pipe.

[0048] Furthermore, the screw mounting part 18 is arranged in a one-to-one correspondence with the connecting post 3.

[0049] It is known that screw holes need to be provided at the screw mounting part 18, and the wall thickness of the turbine housing 1 is relatively thin. If the screw mounting part 18 is set in another position, the screw mounting part 18 needs to be set to be larger. Otherwise, when drilling the screw holes on the screw mounting part 18, it is easy to drill through the wall of the turbine housing 1. However, by setting the screw mounting part 18 corresponding to the connecting column 3, the screw holes on the screw mounting part 18 can be inserted into the connecting column 3, so that the screw mounting part 18 can be set more compactly, saving materials and reducing the volume of the turbine housing.

[0050] Furthermore, multiple reinforcing ribs 19 are arranged on the outer wall of the vortex shell 1, and the multiple reinforcing ribs 19 are arranged at intervals along the circumference of the vortex shell 1.

[0051] It can be seen that the overall strength of the turbine housing is improved by arranging the reinforcing ribs 19.

[0052] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A turbine housing for preventing mutual interference of airflows, comprising a turbine housing (1), wherein the turbine housing (1) is provided with a turbine cavity (11), an intake duct (12), an exhaust duct (13), and a first vortex-shaped air distribution duct (14), the turbine cavity (11) being disposed within the turbine housing (1), the first vortex-shaped air distribution duct (14) being arranged circumferentially around the turbine cavity (11), and the inner side of the first vortex-shaped air distribution duct (14) communicating with the turbine cavity (11); the exhaust duct (13) being arranged axially along the turbine housing (1), and the first end of the exhaust duct (13) communicating with the turbine cavity (11), the second end of the exhaust duct (13) extending outward from the turbine housing (1) in a direction away from the turbine cavity (11); the first end of the intake duct (12) communicating with the first vortex-shaped air distribution duct (14), and the second end of the intake duct (12) extending outward from the turbine housing (1), characterized in that: The vortex shell (1) is also provided with a straight discharge channel (15) and a valve mounting part (16); The first end of the straight exhaust channel (15) is connected to the air intake channel (12) or the first vortex air distribution channel (14), the second end of the straight exhaust channel (15) is connected to the exhaust channel (13), and the valve mounting part (16) is arranged in the middle of the straight exhaust channel (15). It also includes an annular air guide tube (2), which is arranged inside the vortex housing (1). The first end of the annular air guide tube (2) is fixedly connected to the inner wall of the vortex housing (1), and the second end of the annular air guide tube (2) extends toward the side away from the turbine cavity (11). An annular air passage is formed between the outer wall of the annular air guide tube (2) and the inner wall of the outlet end of the straight exhaust channel (15), and the annular air passage is connected to the exhaust channel (13).

2. A turbine housing for preventing mutual interference of airflows according to claim 1, characterized in that: The straight exhaust channel (15) includes an intake section (151) and an exhaust section (152). The valve mounting part (16) is arranged at the connection between the intake section (151) and the exhaust section (152). The end of the intake section (151) away from the valve mounting part (16) is connected to the intake channel (12) or the first vortex air distribution channel (14). The end of the exhaust section (152) away from the valve mounting part (16) is connected to the exhaust channel (13).

3. A turbine housing for preventing mutual interference of airflows according to claim 2, characterized in that: The exhaust section (152) has a guide surface (1521) at one end near the annular air guide tube (2).

4. A turbine housing for preventing mutual interference of airflows according to any one of claims 1-3, characterized in that: The air intake (12) is connected to the air intake end of the first vortex air distribution channel (14), and the air intake (12) is arranged tangentially along the first vortex air distribution channel (14).

5. A turbine housing for preventing mutual interference of airflows according to claim 2, characterized in that: It also includes a second vortex air distribution channel (17), which is arranged side by side with the first vortex air distribution channel (14), and the inner side of the second vortex air distribution channel (17) is connected to the turbine cavity (11), and the second vortex air distribution channel (17) is connected to the intake section (151).

6. A turbine housing for preventing mutual interference of airflows according to any one of claims 1-3 or 5, characterized in that: The turbine housing also includes a connecting column (3), the first end of which is connected to the inner wall of the turbine housing (1), and the second end of which is fixedly connected to the end of the annular air guide tube (2) away from the turbine cavity (11).

7. A turbine housing for preventing mutual interference of airflows according to claim 6, characterized in that: Multiple connecting columns (3) are arranged, and the multiple connecting columns (3) are arranged at intervals along the annular air guide tube (2).

8. A turbine housing for preventing mutual interference of airflows according to claim 7, characterized in that: A screw mounting part (18) is arranged at the exhaust port of the exhaust duct (13) of the vortex shell (1). Multiple screw mounting parts (18) are arranged around the end of the exhaust duct (13) away from the first vortex air distribution duct (14).

9. A turbine housing for preventing mutual interference of airflows according to claim 8, characterized in that: The screw mounting part (18) is arranged in a one-to-one correspondence with the connecting post (3).

10. A turbine housing for preventing mutual interference of airflows according to any one of claims 1-3, characterized in that: The outer wall of the vortex shell (1) is provided with reinforcing ribs (19), and multiple reinforcing ribs (19) are arranged at intervals along the circumference of the vortex shell (1).

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