Valve, intake and exhaust assembly and vehicle

Abstract

The invention relates to a valve, an intake and exhaust assembly and a vehicle, and relates to the technical field of vehicles, the valve comprises a valve body, a bearing and a valve core shaft, the valve body is provided with a fluid channel, a mounting cavity and a through hole communicating the fluid channel with the mounting cavity, and the mounting cavity is located on the radial side of the fluid channel. The bearing is arranged in the mounting cavity and connected with the valve body. The valve element shaft penetrates through the through hole and is connected with the bearing. The valve body is further provided with an air guide channel, and the air guide channel communicates with the through hole and is used for introducing air into the through hole so as to conduct air sealing on the through hole. The air guide channel is arranged on the valve body, so that the service life of the valve can be prolonged.

Description

Technical Field

[0001] This invention relates to the field of vehicle technology, specifically to a valve, an intake and exhaust assembly, and a vehicle. Background Technology

[0002] The engine is a crucial component of a vehicle. To improve engine emission standards, the exhaust gases are typically recirculated into the engine through the intake and exhaust systems, where they are combusted again before being expelled, thus reducing the nitrogen oxide content in the exhaust gases. However, corrosive gases and water vapor in the exhaust gases can corrode bearings and other components within the intake and exhaust systems as they flow through them, affecting the lifespan of these valves.

[0003] The prior art provides a butterfly valve, which includes two sealing rings. The two sealing rings are respectively sleeved on two bearings to form a seal between the valve body and the bearings, which prevents dust and corrosion and extends the service life of the butterfly valve.

[0004] However, with the use of the engine, the sealing ring is prone to wear and failure, and corrosive gases and water vapor will still corrode the bearing, affecting the service life of the valve. Summary of the Invention

[0005] One objective of this invention is to provide a valve to improve its service life; another objective is to provide an intake and exhaust assembly; and a third objective is to provide a vehicle.

[0006] To achieve the above objectives, the technical solution adopted by the present invention is as follows: A first aspect of this application provides a valve, including a valve body, a bearing, and a valve spindle. The valve body has a fluid passage, a mounting cavity, and a through hole connecting the fluid passage and the mounting cavity, with the mounting cavity located radially on one side of the fluid passage. The bearing is disposed within the mounting cavity and connected to the valve body. The valve spindle passes through the through hole and is connected to the bearing. The valve body also has a gas guide passage communicating with the through hole for introducing gas into the through hole to provide a gas seal.

[0007] According to the above technical means, the gap between the valve core and the inner wall of the through hole can be blocked by the gas discharged in the gas guide channel, thereby separating the installation cavity and the fluid channel and preventing the gas in the fluid channel from flowing into the installation cavity. This prevents the gas in the fluid channel from affecting the bearing in the installation cavity. In this way, the bearing can be protected by the gas guide channel, extending the service life of the bearing and thus extending the service life of the valve.

[0008] In some embodiments, the air guide channel includes a first channel portion located on the periphery of the through hole, and the air outlet of the first channel portion is connected to the through hole. Along the direction from the mounting cavity to the fluid channel, the first channel portion gradually approaches the through hole.

[0009] According to the above technical means, after the gas flows out from the first channel, the gas in the fluid channel will be impacted by the gas in the through hole and will not be able to enter the through hole, that is, it will not be able to flow into the mounting cavity and affect the bearing. At the same time, the gas in the air guide channel will also flow into the fluid channel to avoid the gas in the air guide channel from contacting the bearing. This can further improve the protection effect on the bearing and extend the service life of the bearing.

[0010] In some embodiments, the air guide channel further includes an annular channel portion, which extends circumferentially along the through hole. There are multiple first channel portions, which are spaced apart circumferentially along the through hole, and the air inlets of the multiple first channel portions are all connected to the annular channel.

[0011] According to the above technical means, the annular channel portion can introduce gas into multiple first channel portions, so that multiple first channel portions can introduce gas into the through hole from multiple positions on the periphery of the valve spindle inside the through hole. Compared with only one first channel portion introducing gas into the through hole from one side of the periphery of the valve spindle inside the through hole, the gas exhaust from the gas guide channel can improve the gas sealing effect of the through hole, further prevent gas in the fluid channel from flowing into the mounting cavity and affecting the bearing, so as to further extend the service life of the bearing.

[0012] In some embodiments, the inner diameter of the first channel portion is smaller than the inner diameter of the annular channel portion.

[0013] According to the above technical means, during the process of gas flowing from the annular channel into the first channel, the first channel can throttle the gas, thereby increasing the gas flow velocity in the first channel and the through hole. This can further improve the gas sealing effect of the gas discharged from the first channel on the through hole, thereby improving the protection effect on the bearing and extending the service life of the bearing.

[0014] In some embodiments, the air guide channel further includes a second channel portion, the outlet of the second channel portion being connected to the annular channel portion, and the inlet of the second channel portion being used to receive external air or the inlet of the second channel portion being connected to the fluid channel.

[0015] According to the above technical means, the second channel section cooperates with the annular channel section to allow gas to be introduced into multiple first channel sections through the second channel section. This simplifies the overall structure of the gas guiding channel, thereby facilitating the processing and layout of the gas guiding channel and making it easier to process the valve.

[0016] In some embodiments, the inner diameter of the second channel portion is larger than the inner diameter of the annular channel portion.

[0017] According to the above technical means, during the process of gas flowing into the annular channel in the second channel section, the annular channel section can throttle the gas, thereby increasing the gas flow velocity in the annular channel section, and thus increasing the gas flow velocity in the first channel section and the through hole. This can further improve the gas sealing effect of the gas discharged from the first channel section on the through hole, thereby improving the protection effect on the bearing and extending the service life of the bearing.

[0018] In some embodiments, the valve body has a first surface along the axial direction of the fluid channel, and the air inlet of the fluid channel and the air inlet of the second channel portion are both located on the first surface.

[0019] According to the above technical means, when the air inlet of the second channel section is connected to the fluid channel, the air inlet of the fluid channel and the air inlet of the second channel section are both located on the first surface. Compared with the air inlet of the second channel section being located on the inner wall surface of the fluid channel, the gas flowing to the air inlet of the fluid channel can flow more smoothly into the second channel section, thereby increasing the gas flow rate in the second channel section and further ensuring the gas sealing effect of the gas in the air guide channel on the through hole.

[0020] In some embodiments, the valve body includes a tubular portion and a protrusion, the tubular portion forming a fluid passage, and the protrusion being connected to the inner wall surface of the tubular portion. The air inlet of the second passage portion is located on the protrusion.

[0021] According to the above technical means, when the air inlet of the second channel is located in the protrusion, at least a part of the second channel can be located inside the fluid channel. Compared with setting the second channel on the peripheral wall of the tubular part, the second channel is located on one side of the fluid channel in the radial direction, which can increase the inner diameter of the fluid channel, thereby increasing the adjustable flow rate of the valve, improving the valve's effect on regulating the flow of gas, and facilitating the use of the valve.

[0022] In some embodiments, the angle between the axial direction of the first channel portion and the axial direction of the fluid channel is 0, where 60° ≤ 0 < 90°.

[0023] According to the above technical means, when the angle between the axial direction of the first part and the axial direction of the fluid channel is within the above range, it can be ensured that the gas flowing out from the first channel part has a sufficient component in the direction from the mounting cavity to the fluid channel, thereby ensuring the gas sealing effect of the gas flowing out from the first channel part on the through hole.

[0024] In some embodiments, the mounting cavity includes a first mounting cavity and a second mounting cavity, the through hole includes a first through hole and a second through hole, and the bearing includes a first bearing and a second bearing. Along the radial direction of the flow channel, the first mounting cavity and the second mounting cavity are located on opposite sides of the fluid channel. The first through hole connects the first mounting cavity and the fluid channel, and the second through hole connects the second mounting cavity and the fluid channel. The first bearing is disposed in the first mounting cavity, and the second bearing is disposed in the second mounting cavity. The first bearing and the second bearing are respectively connected to both ends of the valve spindle. The gas guide channel includes a first gas guide channel and a second gas guide channel. The first gas guide channel communicates with the first through hole and is used to introduce gas into the first through hole to provide a gas seal. The second gas guide channel communicates with the second through hole and is used to introduce gas into the second through hole to provide a gas seal.

[0025] According to the above technical means, the first through hole can be air-sealed through the first air guide channel, and the second through hole can be air-sealed through the second air guide channel, so as to simultaneously protect the first bearing and the second bearing, extend the service life of the first bearing and the second bearing, and ensure the normal function of the valve.

[0026] A second aspect of this application provides an intake and exhaust assembly including the valve described above.

[0027] The above-mentioned technical means can extend the service life of valves, thereby ensuring the normal function of the intake and exhaust assembly.

[0028] A third aspect of this application provides a vehicle including the aforementioned intake and exhaust assembly.

[0029] Based on the above-mentioned technical means, the normal function of the intake and exhaust assembly can be guaranteed, thereby ensuring the stable operation of the vehicle. The beneficial effects of this invention are: (1) By setting a gas guide channel on the valve body, the present invention can block the gap between the valve core and the inner wall of the through hole through the gas discharged in the gas guide channel, thereby separating the installation cavity and the fluid channel, preventing the gas in the fluid channel from flowing into the installation cavity, so as to prevent the gas in the fluid channel from affecting the bearing in the installation cavity. In this way, the bearing can be protected by the gas guide channel, extending the service life of the bearing, thereby extending the service life of the valve.

[0030] (2) By moving the first channel portion closer to the through hole along the direction of the mounting cavity towards the fluid channel, after the gas flows out from the first channel portion, the gas in the fluid channel will be impacted by the gas in the through hole and will not be able to enter the through hole, that is, it will not be able to flow into the mounting cavity and affect the bearing. At the same time, the gas in the gas guide channel will also flow into the fluid channel to avoid the gas in the gas guide channel from contacting the bearing. This can further improve the protection effect on the bearing and extend the service life of the bearing.

[0031] (3) By setting multiple first channel sections, this application can introduce gas into the through hole from multiple positions on the periphery of the valve spindle inside the through hole. Compared with introducing gas into the through hole from one side on the periphery of the valve spindle inside the through hole through only one first channel section, it can improve the gas sealing effect of the gas discharged from the gas guide channel on the through hole.

[0032] (4) By making the inner diameter of the first channel portion smaller than that of the annular channel portion, the first channel portion can throttle the gas, thereby increasing the gas flow velocity in the first channel portion and the through hole, which can further improve the gas sealing effect of the gas discharged from the first channel portion on the through hole.

[0033] It should be noted that the technical effects of the implementation methods in the second and third aspects can be found in the technical effects of the corresponding implementation methods in the first aspect, and will not be repeated here.

[0034] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and do not limit this application. Attached Figure Description

[0035] Figure 1 A schematic diagram of the structure of a vehicle provided by the present invention; Figure 2 A three-dimensional structural diagram of a valve provided by the present invention; Figure 3 A schematic diagram of the structure of a valve provided by the present invention; Figure 4 for Figure 3 Schematic diagram of the cross section at point AA; Figure 5 for Figure 4 A magnified view of a portion of point A in the middle.

[0036] Wherein, 100 - vehicle; 10 - intake and exhaust assembly; 1-Valve; 11-Valve body; 111-Fluid passage; 112-Air guide passage; 1121-First passage section; 1122-Annular passage section; 1123-Second passage section; 1124-First air guide passage; 1125-Second air guide passage; 113-Mounting cavity; 1131-First mounting cavity; 1132-Second mounting cavity; 114-Through hole; 1141-First through hole; 1142-Second through hole; 115-Tubular part; 116-Protrusion; 12-Valve spindle; 13-Bearing; 131-First bearing; 132-Second bearing; 20 - Body; M - First surface; N - Second surface. Detailed Implementation

[0037] The embodiments of the present invention will be described below with reference to the accompanying drawings and preferred embodiments. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It should be understood that the preferred embodiments are only for illustrating the present invention and not for limiting the scope of protection of the present invention.

[0038] It should be noted that the illustrations provided in the following embodiments are only schematic representations of the basic concept of the present invention. Therefore, the drawings only show the components related to the present invention and are not drawn according to the actual number, shape and size of the components in the actual implementation. In the actual implementation, the form, quantity and proportion of each component can be arbitrarily changed, and the layout of the components may also be more complex.

[0039] like Figure 1 As shown, this application provides a vehicle 100, which includes a body 20, an engine, and an intake and exhaust assembly 10. The intake and exhaust assembly 10 is connected to the body 20 and is used to supply air to the engine so that the engine can work to drive the vehicle 100.

[0040] The intake and exhaust assembly 10 may include an EGR (Exhaust Gas Recirculation) system.

[0041] Specifically, the intake and exhaust assembly 10 includes an intake manifold, an exhaust manifold, and a ventilation pipe. Both the intake manifold and the exhaust manifold are connected to the engine. The ventilation pipe connects the intake manifold and the exhaust manifold. During engine operation, the exhaust gas generated is discharged from the exhaust manifold, and some of the exhaust gas can enter the ventilation pipe. After being cooled, it re-enters the exhaust manifold, mixes with clean air, and then re-enters the engine to participate in combustion.

[0042] This allows the combustion temperature and oxygen concentration inside the engine to be reduced by inert gases such as carbon dioxide and water vapor in the exhaust gas, thereby inhibiting the formation of nitrogen oxides and improving the engine's emission standards.

[0043] In some embodiments, such as Figure 1 , Figure 2 As shown, the intake and exhaust assembly 10 also includes a valve 1, which is located in the ventilation pipe and is used to regulate the flow rate of exhaust gas in the ventilation pipe.

[0044] In this way, the flow rate of exhaust gas can be controlled by valve 1 to regulate the combustion temperature and oxygen concentration of the engine, thereby regulating the content of nitrogen oxides in the exhaust gas emitted by the engine and ensuring the emission standards of the engine.

[0045] In some embodiments, such as Figure 3 , Figure 4 , Figure 5 As shown, valve 1 includes valve body 11, bearing 13 and valve core 12. Valve body 11 is provided with fluid channel 111, mounting cavity 113 and through hole 114 connecting fluid channel 111 and mounting cavity 113. Mounting cavity 113 is located on the radial side of fluid channel 111.

[0046] The bearing 13 is located in the mounting cavity 113 and is connected to the valve body 11. The valve spindle 12 passes through the through hole 114 and is connected to the bearing 13. In this way, the bearing 13 can support the valve spindle 12, thereby reducing the friction between the valve spindle 12 and the valve body 11 when they rotate relative to each other, and extending the service life of the valve spindle 12 and the valve body 11.

[0047] Valve 1 also includes a valve core connected to a valve core shaft 12. The rotation of the valve core shaft 12 relative to the valve body 11 can drive the valve core to open or close the fluid passage 111, thereby regulating the flow rate of the waste gas in the fluid passage 111.

[0048] For example, the valve core can be a valve disc or a valve ball, etc., and correspondingly, valve 1 can be a butterfly valve or a ball valve, etc.

[0049] In some embodiments, such as Figure 3 , Figure 4 , Figure 5 As shown, the valve body 11 is also provided with an air guide channel 112, which is connected to the through hole 114 and is used to introduce gas into the through hole 114 to perform an air seal on the through hole 114.

[0050] This allows the gas discharged from the air guide channel 112 to seal the gap between the valve spindle 12 and the inner wall of the through hole 114, thereby separating the mounting cavity 113 and the fluid channel 111. This prevents the gas in the fluid channel 111 from flowing into the mounting cavity 113, thus preventing the gas in the fluid channel 111 from affecting the bearing 13 in the mounting cavity 113. In this way, the air guide channel 112 can protect the bearing 13, extend the service life of the bearing 13, thereby extending the service life of the valve 1, and ensuring the normal function of the intake and exhaust assembly 10, and ensuring the stable operation of the vehicle 100.

[0051] In some embodiments, such as Figure 4 , Figure 5 As shown, the air guide channel 112 includes a first channel portion 1121, which is located on the periphery of the through hole 114 and the air outlet of the first channel portion 1121 is connected to the through hole 114. Along the direction of the mounting cavity 113 pointing towards the fluid channel 111, the first channel portion 1121 gradually approaches the through hole 114.

[0052] Specifically, along the axial direction of the through hole 114, the air inlet of the first channel portion 1121 is located on the side of the air outlet of the first channel portion 1121 close to the mounting cavity 113, and along the radial direction of the through hole 114, the air inlet of the first channel portion 1121 is located on the side of the air outlet of the first channel portion 1121 away from the valve spindle 12.

[0053] During the process of introducing gas into the through hole 114 through the gas guide channel 112, the gas in the gas guide channel 112 can flow in a direction close to the fluid channel 111 and close to the through hole 114. Thus, after this part of the gas flows out from the first channel portion 1121, the momentum of this part of the gas has a component in the direction of the mounting cavity 113 pointing to the fluid channel 111, thereby enabling the gas in the through hole 114 to flow to the fluid channel 111.

[0054] In this way, after the gas flows out from the first channel section 1121, the gas in the fluid channel 111 will be impacted by the gas in the through hole 114 and will not be able to enter the through hole 114, that is, it will not be able to flow into the mounting cavity 113 and affect the bearing 13. At the same time, the gas in the air guide channel 112 will also flow into the fluid channel 111 to avoid the gas in the air guide channel 112 from contacting the bearing 13. This can further improve the protection effect of the bearing 13 and extend the service life of the bearing 13.

[0055] It should be noted that, under the above circumstances, the gas in the air guide passage 112 can be exhaust gas from the engine or a non-corrosive gas, such as pure air or carbon dioxide, to further prevent the gas in the air guide passage 112 from affecting the bearing 13.

[0056] Of course, in some other embodiments, the first channel portion 1121 may also gradually move away from the through hole 114 along the direction from the mounting cavity 113 to the fluid channel 111.

[0057] In the above situation, after the gas in the air guide channel 112 flows into the through hole 114, it will move along the through hole 114 towards the mounting cavity 113. This can fill the mounting cavity 113 with the gas, thereby preventing the gas in the fluid channel 111 from entering the mounting cavity 113 and affecting the bearing 13 in the mounting cavity 113.

[0058] It should be noted that, under the above circumstances, the gas in the air guide channel 112 is a non-corrosive gas, such as pure air or carbon dioxide, to avoid the gas in the air guide channel 112 affecting the bearing 13.

[0059] In some embodiments, along the axial direction of the through hole 114, the outlet of the first channel portion 1121 is connected to half of the through hole 114 near the fluid channel 111.

[0060] This allows the air outlet of the first channel portion 1121 to be positioned away from the mounting cavity 113, further preventing the gas flowing out of the first channel portion 1121 from entering the mounting cavity 113 and affecting the bearing 13.

[0061] In some embodiments, such as Figure 4 , Figure 5 As shown, the air guide channel 112 also includes an annular channel portion 1122, which extends circumferentially along the through hole 114. There are multiple first channel portions 1121, which are spaced apart circumferentially along the through hole 114, and the air inlets of the multiple first channel portions 1121 are all connected to the annular channel.

[0062] The annular channel portion 1122 can supply gas to multiple first channel portions 1121, allowing gas to be supplied from multiple positions on the periphery of the valve spindle 12 within the through hole 114. Compared to supplying gas to the through hole 114 from one side of the valve spindle 12 within the through hole 114 via only one first channel portion 1121, this improves the gas sealing effect of the gas discharged from the gas guide channel 112 on the through hole 114, further preventing gas in the fluid channel 111 from flowing into the mounting cavity 113 and affecting the bearing 13, thereby further extending the service life of the bearing 13.

[0063] For example, the number of multiple first channel portions 1121 can be two, three, four, etc., and the multiple first channel portions 1121 can be evenly distributed along the circumference of the through hole 114 or unevenly distributed.

[0064] Of course, in some other embodiments, the annular channel portion 1122 may also be square, elliptical, etc., as long as the annular channel surrounds the valve core shaft 12.

[0065] Alternatively, the annular channel portion 1122 can also be an arc channel, a channel formed by connecting multiple straight channels that does not surround the valve core shaft 12, etc., as long as the multiple first channel portions 1121 arranged circumferentially along the through hole 114 are all connected to the annular channel portion 1122.

[0066] In some embodiments, such as Figure 4 , Figure 5 As shown, the air guide channel 112 also includes a second channel portion 1123. The air outlet of the second channel portion 1123 is connected to the annular channel portion 1122, and the air inlet of the second channel portion 1123 is used to connect to external air or the air inlet of the second channel portion 1123 is connected to the fluid channel 111.

[0067] Of course, in some other embodiments, the gas guide channel 112 may also include multiple connecting channels, which are respectively connected to multiple first channel portions 1121, and the multiple connecting channels can all be connected to air or to the fluid channel 111, and gas can also be introduced into the multiple first channel portions 1121.

[0068] Compared to setting multiple connecting channels, by setting the second channel portion 1123 in conjunction with the annular channel portion 1122, gas can be introduced into multiple first channel portions 1121 through the second channel portion 1123. This simplifies the overall structure of the gas guiding channel 112, thereby facilitating the processing and layout of the gas guiding channel 112, which in turn facilitates the processing of the valve 1.

[0069] In some embodiments, such as Figure 4 , Figure 5 As shown, the inner diameter of the first channel portion 1121 is smaller than the inner diameter of the annular channel portion 1122.

[0070] With the above configuration, during the process of gas flowing from the annular channel portion 1122 into the first channel portion 1121, the first channel portion 1121 can throttle the gas, thereby increasing the gas flow velocity in the first channel portion 1121 and the through hole 114. This can further improve the gas sealing effect of the gas discharged from the first channel portion 1121 on the through hole 114, thereby improving the protection effect on the bearing 13 and extending the service life of the bearing 13.

[0071] Of course, in some other embodiments, the inner diameter of the first channel portion 1121 may be larger than the inner diameter of the annular channel portion 1122, or the inner diameter of the first channel portion 1121 may be equal to the inner diameter of the annular channel portion 1122.

[0072] In some embodiments, such as Figure 4 , Figure 5 As shown, the inner diameter of the second channel portion 1123 is larger than the inner diameter of the annular channel portion 1122.

[0073] With the above configuration, during the process of gas flowing from the second channel section 1123 into the annular channel section 1122, the annular channel section 1122 can throttle the gas, thereby increasing the gas flow velocity in the annular channel section 1122, which in turn increases the gas flow velocity in the first channel section 1121 and the through hole 114. This can further improve the gas sealing effect of the gas discharged from the first channel section 1121 on the through hole 114, thereby improving the protection effect on the bearing 13 and extending the service life of the bearing 13.

[0074] Of course, in some other embodiments, the inner diameter of the second channel portion 1123 may be smaller than the inner diameter of the annular channel portion 1122, or the inner diameter of the second channel portion 1123 may be equal to the inner diameter of the annular channel portion 1122.

[0075] In some embodiments, such as Figure 4 , Figure 5 As shown, along the axial direction of the fluid channel 111, the valve body 11 has a first surface M, and the air inlet of the fluid channel 111 and the air inlet of the second channel portion 1123 are both located on the first surface M.

[0076] Of course, in some other embodiments, the air inlet of the second channel portion 1123 may also be located on the inner wall surface of the fluid channel 111.

[0077] Thus, when the air inlet of the second channel section 1123 is connected to the fluid channel 111, part of the gas flowing to the air inlet of the fluid channel 111 can flow into the second channel section 1123 through the air inlet of the second channel section 1123, thereby sealing the through hole 114.

[0078] Since the air guide channel 112 does not require external air, the structure of valve 1 can be simplified, making it easier to install and use valve 1.

[0079] Meanwhile, the air inlet of the fluid channel 111 and the air inlet of the second channel portion 1123 are both located on the first surface M. Compared with the air inlet of the second channel portion 1123 being located on the inner wall of the fluid channel 111, this allows the gas flowing into the second channel portion 1123 to flow more smoothly into the fluid channel 111, thereby increasing the gas flow rate in the second channel portion 1123 and further ensuring the gas sealing effect of the gas in the air guide channel 112 on the through hole 114.

[0080] Of course, the air intake of the second channel section 1123 can also be connected to external air, etc.

[0081] It should be noted that when the air inlet of the second channel section 1123 is connected to air or the like, the air or the like can be used to seal the through hole 114, thereby improving the protection effect on the bearing 13.

[0082] In some other embodiments, the air inlet of the second channel portion 1123 may also be located on the outer wall surface of the tubular portion 115 so that the second channel portion 1123 can be connected to external air, etc.

[0083] It should be noted that, as shown in the figure, along the axial direction of the fluid channel 111, the valve body 11 also has a second surface N opposite to the first surface M, and the air outlet of the fluid channel 111 is located on the second surface N.

[0084] In some embodiments, such as Figure 3 , Figure 4 , Figure 5 As shown, the valve body 11 includes a tubular portion 115 and a protrusion 116. The tubular portion 115 forms a fluid passage 111, and the protrusion 116 is connected to the inner wall surface of the tubular portion 115. The air inlet of the second passage portion 1123 is located in the protrusion 116.

[0085] Of course, in some other embodiments, the second channel portion 1123 may also be disposed on the peripheral wall of the tubular portion 115, and the air inlet of the second channel portion 1123 may also be located in the tubular portion 115.

[0086] When the air inlet of the second channel portion 1123 is located in the protrusion 116, at least a portion of the second channel portion 1123 can be located inside the fluid channel 111. Compared to placing the second channel portion 1123 on the peripheral wall of the tubular portion 115, the second channel portion 1123 being located on one side of the fluid channel 111 in the radial direction can increase the inner diameter of the fluid channel 111, thereby increasing the adjustable flow rate of the valve 1, improving the regulating effect of the valve 1 on the gas flow rate, and facilitating the use of the valve 1.

[0087] In some embodiments, the distance between the second channel portion 1123 and the through hole 114 gradually increases along the direction from the mounting cavity 113 to the fluid channel 111.

[0088] Of course, in some other embodiments, the second channel portion 1123 may extend axially along the fluid channel 111.

[0089] Compared to the second channel portion 1123 extending axially along the fluid channel 111, when the distance between the second channel portion 1123 and the through hole 114 gradually increases along the direction of the mounting cavity 113 pointing towards the fluid channel 111, it is easier for the second channel portion 1123 to communicate with the annular channel portion 1122, and the space required for the second channel portion 1123 can be reduced, so as to facilitate the spatial arrangement of the air guide channel 112.

[0090] In some embodiments, such as Figure 5 As shown, the angle between the axial direction of the first part and the axial direction of the fluid channel 111 is 0, where 60°≤0<90°.

[0091] When the angle between the axial direction of the first part and the axial direction of the fluid channel 111 is within the above range, it can be ensured that the gas flowing out of the first channel part 1121 has a sufficient component in the direction of the mounting cavity 113 pointing to the fluid channel 111, thereby ensuring the gas sealing effect of the gas flowing out of the first channel part 1121 on the through hole 114.

[0092] In some embodiments, such as Figure 2 , Figure 3 , Figure 4 ,as well as Figure 5 As shown, the mounting cavity 113 includes a first mounting cavity 1131 and a second mounting cavity 1132, the through hole 114 includes a first through hole 1141 and a second through hole 1142, and the bearing 13 includes a first bearing 131 and a second bearing 132.

[0093] Along the radial direction of the flow channel 111, the first mounting cavity 1131 and the second mounting cavity 1132 are located on opposite sides of the fluid channel 111. The first through hole 1141 connects the first mounting cavity 1131 and the fluid channel 111, and the second through hole 1142 connects the second mounting cavity 1132 and the fluid channel 111. The first bearing 131 is disposed in the first mounting cavity 1131, and the second bearing 132 is disposed in the second mounting cavity 1132. The first bearing 131 and the second bearing 132 are respectively connected to both ends of the valve spindle 12.

[0094] The gas guiding channel 112 includes a first gas guiding channel 1124 and a second gas guiding channel 1125. The first gas guiding channel 1124 is connected to the first through hole 1141 and is used to introduce gas into the first through hole 1141 to seal the first through hole 1141. The second gas guiding channel 1125 is connected to the second through hole 1142 and is used to introduce gas into the second through hole 1142 to seal the second through hole 1142.

[0095] In this way, the valve spindle 12 can be supported by the first bearing 131 and the second bearing 132, thereby further reducing the friction between the valve spindle 12 and the valve body 11.

[0096] Simultaneously, the first through hole 1141 can be air-sealed through the first air guide channel 1124, and the second through hole 1142 can be air-sealed through the second air guide channel 1125, so as to provide protection for the first bearing 131 and the second bearing 132 at the same time, extend the service life of the first bearing 131 and the second bearing 132, and ensure the normal function of valve 1.

[0097] For example, the number of first mounting cavities 1131 can be one, two, three, etc., and the number of second mounting cavities 1132 can be one, two, three, etc. Correspondingly, the number of first through holes 1141, second through holes 1142, first bearings 131, second bearings 132, and valve spindles 12 can all be one, two, three, etc. In this way, valve 1 can regulate the gas flow rate by driving one or more valve cores to rotate through one or more valve spindles 12.

[0098] The above embodiments are merely preferred embodiments provided to fully illustrate the present invention, and the scope of protection of the present invention is not limited thereto. Equivalent substitutions or modifications made by those skilled in the art based on the present invention are all within the scope of protection of the present invention.

Claims

1. A valve, characterized in that, The valve includes a valve body (11), a bearing (13) and a valve core (12). The valve body (11) is provided with a fluid channel (111), a mounting cavity (113) and a through hole (114) connecting the fluid channel (111) and the mounting cavity (113). The mounting cavity (113) is located on the radial side of the fluid channel (111). The bearing (13) is located in the mounting cavity (113) and is connected to the valve body (11); the valve spindle (12) passes through the through hole (114) and is connected to the bearing (13); The valve body (11) is also provided with an air guide channel (112), which is connected to the through hole (114) and is used to introduce gas into the through hole (114) to seal the through hole (114).

2. The valve according to claim 1, characterized in that, The air guide channel (112) includes a first channel portion (1121), which is located on the periphery of the through hole (114). The air outlet of the first channel portion (1121) is connected to the through hole (114). Along the direction of the mounting cavity (113) pointing towards the fluid channel (111), the first channel portion (1121) gradually approaches the through hole (114).

3. The valve according to claim 2, characterized in that, The air guide channel (112) further includes an annular channel portion (1122), which extends circumferentially along the through hole (114). There are multiple first channel portions (1121), which are spaced apart circumferentially along the through hole (114), and the air inlets of the multiple first channel portions (1121) are all connected to the annular channel.

4. The valve according to claim 3, characterized in that, The inner diameter of the first channel portion (1121) is smaller than the inner diameter of the annular channel portion (1122).

5. The valve according to claim 3, characterized in that, The air guide channel (112) further includes a second channel section (1123), the outlet of the second channel section (1123) is connected to the annular channel section (1122), and the inlet of the second channel section (1123) is used to connect to external air or the inlet of the second channel section (1123) is connected to the fluid channel (111).

6. The valve according to claim 5, characterized in that, The inner diameter of the second channel portion (1123) is larger than the inner diameter of the annular channel portion (1122).

7. The valve according to claim 5, characterized in that, Along the axial direction of the fluid channel (111), the valve body (11) has a first surface (M), and the air inlet of the fluid channel (111) and the air inlet of the second channel portion (1123) are both located on the first surface (M).

8. The valve according to claim 5, characterized in that, The valve body (11) includes a tubular portion (115) and a protrusion (116), the tubular portion (115) forming the fluid channel (111), and the protrusion (116) being connected to the inner wall surface of the tubular portion (115). The air inlet of the second channel portion (1123) is located in the protrusion (116).

9. The valve according to claim 2, characterized in that, The angle between the axial direction of the first channel portion (1121) and the axial direction of the fluid channel (111) is 0, where 60°≤0<90°.

10. The valve according to claim 1, characterized in that, The mounting cavity (113) includes a first mounting cavity (1131) and a second mounting cavity (1132), the through hole (114) includes a first through hole (1141) and a second through hole (1142), and the bearing (13) includes a first bearing (131) and a second bearing (132). Along the radial direction of the flow channel (111), the first mounting cavity (1131) and the second mounting cavity (1132) are located on opposite sides of the fluid channel (111), the first through hole (1141) connects the first mounting cavity (1131) and the fluid channel (111), and the second through hole (1142) connects the second mounting cavity (1132) and the fluid channel (111); the first bearing (131) is disposed in the first mounting cavity (1131), the second bearing (132) is disposed in the second mounting cavity (1132), and the first bearing (131) and the second bearing (132) are respectively connected to both ends of the valve spindle (12); The gas guiding channel (112) includes a first gas guiding channel (1124) and a second gas guiding channel (1125). The first gas guiding channel (1124) is connected to the first through hole (1141) and is used to introduce gas into the first through hole (1141) to gas seal the first through hole (1141). The second gas guiding channel (1125) is connected to the second through hole (1142) and is used to introduce gas into the second through hole (1142) to gas seal the second through hole (1142).

11. An intake and exhaust assembly, characterized in that, Includes the valve (1) as described in any one of claims 1-10.

12. A vehicle, characterized in that, Includes the intake and exhaust assembly (10) as described in claim 11.

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