Pneumatic controller integrated with active heat dissipation function and pneumatic system

Abstract

The invention provides a pneumatic controller integrated with an active heat dissipation function and a pneumatic system.The pneumatic controller comprises a shell, a valve assembly is arranged in the shell, and the valve assembly is used for being connected with an external air source and at least one air bag so as to inflate and / or deflate the air bag; the shell is provided with a first through opening and a second through opening which are communicated with the internal environment and the external environment, and the inlet end of the first through opening is used for being communicated with an external air source. Air holes are further formed in the shell and located in the peripheral side of the outlet end of the first through opening, so that when airflow provided by an external air source passes through the first through opening, the airflow at the air holes is driven to circulate into the shell; and the flow guide structure is arranged in the shell and used for converging and accelerating airflow entering through the air holes into forced heat dissipation airflow directionally sweeping the surface of the valve body assembly. According to the pneumatic controller, airflow is provided through the air source, active heat dissipation is achieved through the injection effect and the coanda effect, the stability of the controller is improved, and the service life of the controller is prolonged.

Description

Technical Field

[0001] This disclosure generally relates to the field of pneumatic controller technology, and specifically to a pneumatic controller and pneumatic system with integrated active heat dissipation function. Background Technology

[0002] As the automotive industry moves towards intelligent and comfortable features, mid-to-high-end models commonly integrate systems such as massage, lumbar support adjustment, side wing adjustment, and leg support adjustment into the seats. These systems use pneumatic controllers to inflate and deflate multiple airbags, enabling diverse control modes. To meet the demands of compact layouts, these controllers are typically installed in sealed or semi-sealed locations under the seat or inside the seat cushion—spaces with limited ventilation. Furthermore, the internal valves of the airbags continuously generate heat during operation, with the heat primarily dissipated through passive radiation from the outer casing, making rapid heat dissipation difficult.

[0003] In existing technologies, the valve body assembly operates under high-temperature conditions for extended periods, which can easily lead to demagnetization of the solenoid valve's magnetic materials, increased coil resistance, slow response, and even burnout. Simultaneously, electronic components and plastic structural parts age faster, significantly shortening the controller's lifespan. Therefore, achieving efficient and active heat dissipation for the valve body assembly within the sealed housing is a crucial technical problem that urgently needs to be solved. Summary of the Invention

[0004] In view of the above-mentioned defects or deficiencies in the prior art, it is desirable to provide a pneumatic controller and pneumatic system with integrated active heat dissipation function to solve the above problems.

[0005] The first aspect of this application provides a pneumatic controller with integrated active cooling function, comprising: The housing includes a valve assembly inside, which connects to an external air source and at least one air bag for inflating and / or deflating the air bag. The housing also has a first and a second port connecting the interior and exterior environments. The inlet end of the first port connects to the external air source. Furthermore, the housing has an air hole located around the outlet end of the first port, so that when the airflow from the external air source passes through the first port, it drives the airflow at the air hole to flow into the housing. A flow guiding structure, located inside the housing, is used to converge and accelerate the airflow entering through the air hole into a forced heat dissipation airflow that sweeps directionally across the surface of the valve body assembly.

[0006] According to the technical solution provided in the embodiments of this application, the flow guiding structure is installed on the inner wall of the housing, and the flow guiding structure has a flow guiding surface on the side near the air hole, which is used to guide the airflow through the air hole to the surface of the valve body assembly.

[0007] According to the technical solution provided in the embodiments of this application, the flow guiding structure is a detachable shroud. The shroud has an annular structure and is sleeved on the outlet end of the first port and the outside of the air hole. The inner wall of the shroud forms a flow guiding surface, which is used to guide the airflow through the air hole to the surface of the valve body assembly.

[0008] According to the technical solution provided in the embodiments of this application, the inner diameter of the fairing is gradually changing, and the radial dimensions at both ends are greater than the radial dimensions in the middle, so that the inner wall of the fairing forms a flow-guiding surface; the flow-guiding surface is the flow-guiding surface in the form of a curved surface.

[0009] According to the technical solution provided in the embodiments of this application, the second port is opened at the end of the housing away from the first port, so that the airflow path inside the housing passes through the valve body assembly.

[0010] According to the technical solution provided in the embodiments of this application, multiple second ports are provided, and the multiple second ports are independent of each other.

[0011] According to the technical solution provided in the embodiments of this application, a pneumatic controller integrating active heat dissipation function is characterized in that the outlet end of the first port is formed with an extension section extending into the interior of the housing; a flow path is formed between the outer wall of the extension section and the inner wall of the shroud.

[0012] According to the technical solution provided in the embodiments of this application, the air holes are provided in a plurality of manner, and the plurality of air holes are arranged and distributed circumferentially along the first opening.

[0013] According to the technical solution provided in the embodiments of this application, the farthest distance between the plurality of air holes is greater than the inner diameter of the center of the fairing.

[0014] According to the technical solution provided in the embodiments of this application, the inner diameter of the air hole is gradually changing, and the radial dimension of one end near the inside of the shell is smaller than the radial dimension of the other end.

[0015] According to the technical solution provided in the embodiments of this application, the housing includes a detachably connected upper shell and a lower shell.

[0016] A second aspect of this application provides a pneumatic system, including an air source, at least one air bag, and a pneumatic controller as described above.

[0017] Compared with the prior art, the beneficial effects of this application are as follows: by opening an air hole on the periphery of the outlet end of the first port and setting a flow guiding structure in the housing corresponding to the air hole, when an external air source supplies air into the housing through the first port, the high-speed airflow uses the ejection effect to form a negative pressure zone near the air hole, automatically driving the external ambient air into the housing through the air hole; the incoming non-directional airflow is constrained and guided by the flow guiding structure, and is converged and accelerated into a forced convection cooling airflow with significantly increased flow rate and velocity. This airflow adheres to the surface of the flow guiding structure based on the Coanda effect, fully sweeping the surface of the valve body assembly to efficiently remove heat. The heated airflow is smoothly discharged from the housing through the second port, constructing a complete active heat dissipation cycle in the sealed or semi-sealed housing.

[0018] This solution eliminates the need for an independent fan or other dedicated active cooling components within the housing. It achieves efficient active cooling solely by utilizing the airflow output from the external air source connected to the first port. This significantly reduces the operating temperature of the valve components, avoids the risk of failure such as solenoid valve demagnetization and component aging, greatly improves the stability and lifespan of the controller, and integrates the heat dissipation structure within the housing without taking up additional seat space. This facilitates direct upgrades and modifications to existing massage systems and offers strong versatility. Attached Figure Description

[0019] Other features, objects, and advantages of this application will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings: Figure 1 A schematic diagram of the pneumatic controller structure with integrated active heat dissipation function provided in Example 1; Figure 2 for Figure 1 A schematic diagram of the airflow direction in cross-sectional view of the pneumatic controller; Figure 3 for Figure 2 Enlarged structural diagram at point A; Figure 4 for Figure 1 The exploded view of the pneumatic controller shown; Figure 5 This is a schematic diagram of the airflow direction in the cross-sectional view of the pneumatic controller in Example 3.

[0020] Reference numerals: 1. Valve body assembly; 2. First port; 3. Second port; 4. Vent; 5. Shield; 6. Guide surface; 7. Extension section; 8. Guide path; 9. Upper shell; 10. Lower shell. Detailed Implementation

[0021] The present application will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, only the parts relevant to the invention are shown in the accompanying drawings.

[0022] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0023] Example 1 Please refer to Figures 1-4 This embodiment provides a pneumatic controller with integrated active cooling function, including: The housing includes a valve assembly 1 inside, which is used to connect an external air source and at least one air bag for inflating and / or deflating the air bag. The housing has a first port 2 and a second port 3 connecting the interior and the external environment. The inlet end of the first port 2 is used to connect to the external air source. The housing also has an air hole 4 located around the outlet end of the first port 2, so that when the airflow provided by the external air source passes through the first port 2, it drives the airflow at the air hole 4 to flow into the interior of the housing. A flow guiding structure is provided inside the housing to converge and accelerate the airflow entering through the air hole 4 into a forced heat dissipation airflow that sweeps directionally across the surface of the valve body assembly 1.

[0024] Specifically, this embodiment provides a pneumatic controller with integrated active heat dissipation function. The controller is adapted to the air-using devices of vehicle seat massage, lumbar support adjustment, side wing adjustment, leg support adjustment and other systems. A valve body assembly 1 is fixed inside its housing. The valve body assembly 1 can be connected to an external air source and at least one air bag. It can complete the inflation and / or deflation of the air bag according to the control command to meet the diverse seat function requirements. During continuous operation, the valve body assembly 1 will become the main heat source inside the controller. The present invention achieves efficient active heat dissipation by setting a matching heat dissipation structure on the housing and inside, effectively solving the problem of heat accumulation in traditional controllers.

[0025] The pneumatic controller housing has a first port 2 and a second port 3 connecting its interior and exterior environments. The first port 2 is formed inside an air nozzle located on the exterior of the housing. The inlet end of the first port 2 is used for sealed communication with an external air source, which can both supply airflow for inflating and deflating the massage air bag and provide basic power for active heat dissipation. It should be noted that the external air source can be an air pump. In this embodiment, the external air source connected to the first port 2 and the external air source connected to the valve body assembly 1 can be two independent air sources or the same external air source. The housing also has an air hole 4 on the periphery of the outlet end of the first port 2. The ambient air outside the housing can be synchronously driven to flow into the housing when the external air source outputs airflow, supplementing the airflow for forced convection heat dissipation. At the same time, a flow guide structure is provided inside the housing at the position corresponding to the air hole 4, which is used to guide the airflow entering through the air hole 4 to the valve body assembly 1.

[0026] Work process: Reference Figure 2 The arrows indicate the airflow path. After the external air source is activated, a high-speed airflow is continuously output to the first port 2. As the high-speed airflow enters the housing through the first port 2, a negative pressure zone is formed at the outlet of the first port 2 and around the vent 4. Utilizing the ejection effect, ambient air from outside the housing is drawn into the housing through the vent 4 and impacts the guide structure. The airflow entering through the vent 4 is constrained and guided by the guide structure, converged, and accelerated into a forced cooling airflow with significantly increased flow rate and velocity. This airflow adheres to the surface of the guide structure based on the Coanda effect, thoroughly sweeping the surface of the valve body assembly 1 to efficiently remove heat. The heated airflow is smoothly discharged from the housing through the second port 3, constructing a complete active cooling cycle within the sealed or semi-sealed housing. The airflow entering through the vent 4 includes directional airflow and non-directional airflow. Directional airflow refers to airflow that flows directly towards the guide structure after entering through the vent 4, while non-directional airflow refers to airflow with a more dispersed flow direction after entering.

[0027] In this embodiment, the pneumatic controller, based on pneumatic control, utilizes the coordinated design of the first port 2, the second port 3, the air vent 4, and the air guide structure to achieve active heat dissipation by relying on external airflow. Furthermore, the air source for the valve body assembly 1 and the first port 2 can be shared or independently configured, resulting in enhanced adaptability. This structure eliminates the need for an additional heat dissipation power source; the heat dissipation structure is highly integrated within the housing, without occupying extra space within the seat. It efficiently removes heat from the valve body assembly 1, preventing component failure and aging caused by high temperatures, thus improving the controller's operational stability and lifespan. It can also be directly adapted for upgrading and retrofitting existing massage systems, demonstrating excellent versatility.

[0028] Furthermore, the flow guiding structure is a detachable shroud 5. The shroud 5 has an annular structure and is sleeved on the outlet end of the first port 2 and the outside of the air hole 4. The inner wall of the shroud 5 has a flow guiding surface, which is used to guide the airflow through the air hole 4 to the surface of the valve body assembly 1.

[0029] Specifically, in this embodiment, the airflow guiding structure is a shroud 5. The shroud 5 is an independent component, detachably installed inside the housing, and assembled with the housing using snap-fit ​​or screw-fit methods. This facilitates subsequent maintenance and replacement, and also adapts to different specifications of the first opening 2 and vent 4 layouts, improving the overall structural adaptability. The shroud 5 has a ring-shaped structure, fitted onto the outer side of the outlet end of the first opening 2 and covering the outer side of the vent 4. Its installation position precisely corresponds to the first opening 2 and the vent 4, covering the air outlet area of ​​the vent 4. A guiding surface is formed on the inner wall of the shroud 5. The airflow drawn in through the vent 4 acts on the guiding surface, thereby converging and accelerating with the airflow entering through the first opening 2, forming a forced convection cooling airflow. The guiding surface can be set as a plane or a curved surface, ensuring that the airflow can adhere to the surface of the guiding structure based on the Coanda effect.

[0030] The guide surface is continuously distributed around the circumference of the fairing 5, so that no matter where the air hole 4 is located on the side of the first opening 2, the airflow entering from the air hole 4 can directly contact the guide surface, ensuring that the airflow entering from all directions can achieve good guiding and rectification effects.

[0031] Furthermore, the inner diameter of the fairing 5 is gradually changing, and the radial dimensions at both ends are greater than the radial dimensions at the middle, so that the inner wall of the fairing 5 forms a flow-guiding surface 6; the flow-guiding surface 6 is the flow-guiding surface in the form of a curved surface.

[0032] Specifically, in this embodiment, the inner wall of the fairing 5 forms a guide surface 6 (i.e. a curved guide surface) through a gradient inner diameter structure. There is no need to process or splice the guide surface on the inner wall of the fairing 5. This makes the guide surface 6 form a smooth, continuous and structurally abrupt curved surface shape, providing a structural basis for the stable performance of the Coanda effect and ensuring that the airflow drawn in through the air hole 4 can stably adhere to the guide surface 6 and flow.

[0033] The gradient structure gives the fairing 5 a flow pattern that is wide at both ends and narrow in the middle. When the airflow drawn in by the vent 4 enters the fairing 5, it first converges completely in the wide diameter area at the inlet end, and then flows along the smooth guide surface 6 in the middle. Utilizing the Coanda effect, it adheres closely to the curved surface to achieve directional flow, while the flow velocity naturally increases in the narrow diameter area in the middle. This structural design simplifies the processing and forming of the fairing 5, reduces manufacturing costs, and effectively avoids turbulence caused by abrupt structural changes, ensuring the stability of the directional airflow and improving the purging effect on the heating surface of the valve body assembly 1. At the same time, the integrated gradient structure enhances the overall structural strength of the fairing 5, allowing it to better adapt to the vibration environment during vehicle operation. This ensures that the heat dissipation structure achieves efficient heat dissipation while maintaining structural reliability and a long service life.

[0034] Furthermore, the second port 3 is opened at the end of the housing away from the first port 2, so that the airflow path inside the housing passes through the valve body assembly 1.

[0035] Specifically, the second port 3 is located at the end of the housing furthest from the first port 2. This arrangement creates a linear airflow channel from the first port 2 to the second port 3 inside the housing. This ensures that the airflow path within the housing always passes through the heat-generating area of ​​the valve body assembly 1, structurally guaranteeing that the cooling airflow can comprehensively sweep across the surface of the valve body assembly 1, preventing the airflow from bypassing the heat source and ensuring sufficient heat exchange between the cooling airflow and the valve body assembly 1. Simultaneously, this arrangement maximizes the length of the airflow path within the housing, increasing the contact time between the cooling airflow and the valve body assembly 1, allowing the airflow to carry away heat more efficiently. Furthermore, it enables the airflow to form an orderly unidirectional flow within the housing, preventing backflow and turbulence, maintaining pressure balance inside and outside the housing, and ensuring the entire active cooling cycle operates efficiently and orderly.

[0036] Furthermore, multiple second ports 3 are provided, and the multiple second ports 3 are independent of each other.

[0037] Specifically, the second port 3 has multiple independent ports. These multiple independent second ports 3 can be evenly distributed at the ends of the housing away from the first port 2, which greatly increases the overall exhaust flow area of ​​the housing. This allows the heated airflow that has completed heat exchange to be discharged smoothly and synchronously from multiple locations around the valve body assembly 1, effectively improving exhaust efficiency and accelerating the airflow circulation speed inside the housing. It can also avoid exhaust blockage and local heat accumulation problems that are easy to occur in a single port. If a single port is slightly blocked, the other ports can still exhaust normally, ensuring the continuity and reliability of the active heat dissipation cycle.

[0038] Furthermore, the outlet end of the first port 3 is formed with an extension section 7 extending into the interior of the housing; a flow path 8 is formed between the outer wall of the extension section 7 and the inner wall of the fairing 5.

[0039] Specifically, such as Figure 3 As shown, the outlet end of the first port 2 extends into the housing to form an extension section 7. The extension section 7 is coaxially arranged with the fairing 5, and an annular guide path 8 is formed between its outer wall and the guide surface 6 of the inner wall of the fairing 5. This guide path 8 provides a dedicated flow channel for the airflow entering through the vent 4. The extension section 7 allows the airflow from the first port 2 to be ejected directly into the housing at high speed along its inner wall. The high-speed airflow creates a negative pressure zone at the outlet of the extension section 7 and in the inner area of ​​the fairing 5. Under the action of the pressure difference, the airflow outside the housing enters through the vent 4 and flows along the guide path 8 towards the outlet of the extension section 7. Throughout the flow process, the airflow always conforms to the guide surface 6, ensuring the directionality of the airflow through the Coanda effect. The existence of the guide path 8 allows the airflow introduced by the vent 4 to flow in an orderly manner, avoiding the airflow from directly impacting the main airflow ejected through the extension section 7 and causing turbulence. At the same time, this structure further enhances the negative pressure effect inside the fairing 5 and improves the intake efficiency of the vent 4. The airflow entering through the vent 4 is guided by the guide passage 8 and then merges with the main airflow ejected from the extension section 7 outside the outlet of the extension section 7. This greatly improves the purging coverage and heat dissipation effect of the airflow on the valve body assembly 1. At the same time, this structure makes the design of the heat dissipation air path more reasonable, making full use of the synergistic effect of the ejector effect and the Coanda effect to ensure the efficient operation of the active heat dissipation cycle.

[0040] Furthermore, the air holes 4 are provided in multiple ways, and the multiple air holes 4 are arranged and distributed circumferentially along the first opening 2.

[0041] Specifically, multiple air holes 4 are provided, and these multiple air holes 4 are evenly distributed along the circumference of the first opening 2. This layout is adapted to the annular shroud 5, allowing external airflow to enter the housing from multiple directions around the first opening 2 through the air holes 4. Combined with the guide surface 6 of the shroud 5, the airflow can flow along the guide surface 6 from multiple directions, making full use of the circumferential guide space of the shroud 5 and enhancing the Coanda effect. At the same time, the multi-directional air intake structure can make the intake airflow more evenly converge into the heat dissipation air path, avoiding problems such as excessive local airflow and turbulence caused by single air intake. This makes the negative pressure zone formed inside the shroud 5 more uniform, further improving the intake efficiency of the ejector effect, bringing more external ambient air into the housing, and increasing the total amount of heat dissipation airflow.

[0042] Furthermore, the furthest distance between the plurality of air holes 4 is greater than the central inner diameter of the fairing 5.

[0043] Specifically, the furthest distance between the multiple vents 4 is greater than the central inner diameter of the fairing 5. This size design ensures that the overall coverage of the circumferentially arranged vents 4 extends beyond the narrow diameter region in the center of the fairing 5. This provides sufficient buffer space for the airflow entering through the vents 4 before contacting the guide surface 6 of the fairing 5. The airflow can then conform to the guide surface 6 from a wider area outside the fairing 5 and enter the guide path 8, avoiding turbulence caused by concentrated airflow impacting a local area of ​​the guide surface 6 due to the small coverage area of ​​the vents 4. This ensures the stable operation of the Coanda effect. Simultaneously, this size design makes the fit between the vents 4 and the fairing 5 more efficient, maximizing the use of the negative pressure area formed by the ejector effect. This allows each vent 4 to efficiently draw in external airflow, improving overall intake efficiency and allowing more external air to participate in the heat dissipation cycle, further enhancing the uniformity and overall efficiency of heat dissipation.

[0044] Furthermore, the inner diameter of the vent 4 is gradually changing, and the radial dimension of one end near the inside of the housing is smaller than the radial dimension of the other end.

[0045] Specifically, the inner diameter of the vent 4 is gradually changing, and the radial dimension of the end closer to the inside of the shell is smaller than that of the end farther from the shell. This makes the vent 4 form a gradually narrowing flow structure with a wider outer side and a narrower inner side. This structure is compatible with the negative pressure zone formed by the ejector effect. When the airflow outside the shell enters from the wide diameter end of the vent 4 under the action of the air pressure difference, the flow velocity naturally increases as it flows through the gradually narrowing channel to the narrow diameter end. This allows the airflow to adhere more quickly to the guide surface 6 of the fairing 5 after it flows out of the vent 4, further enhancing the Coanda effect and avoiding problems such as loose adhesion to the surface and turbulent flow caused by excessively low airflow velocity. Meanwhile, the tapered inner diameter design enables the air vent 4 to converge airflow, forming a directional airflow stream that flows through the guide passage 8, improving the air intake efficiency of the air vent 4 into the housing, allowing more external cold air to participate in the heat dissipation cycle. This structure also effectively reduces the flow resistance of the airflow inside the air vent 4, ensuring the smoothness of the air intake process. In addition, the design with a wider outer side and a narrower inner side can also block dust and debris from entering the housing to a certain extent, reducing the impact of impurities on the valve body assembly 1 and the heat dissipation air passage, thus balancing air intake efficiency with the protective effect inside the housing.

[0046] Furthermore, the housing includes a detachably connected upper shell 9 and a lower shell 10.

[0047] Specifically, the housing includes a detachably connected upper shell 9 and lower shell 10. The upper shell 9 and lower shell 10 can be sealed together by snap-fit ​​and screw connection, which facilitates the inspection and replacement of internal components such as the valve body assembly 1 and the rectifier 5, and also enables quick disassembly and repair in case of component failure, reducing later maintenance costs. In this embodiment, the first port 2, the second port 3, and the air hole 4 are all concentrated on the upper shell 9, forming an integrated layout design for the air intake, auxiliary air intake, and exhaust structures, so that all key structures of the heat dissipation air path are concentrated on the same side of the housing.

[0048] Example 2 Based on Embodiment 1 above, this embodiment provides another pneumatic controller with integrated active heat dissipation function. The contents that are the same as in Embodiment 1 will not be repeated here; the differences are as follows: The flow guiding structure is installed on the inner wall of the housing. The flow guiding structure has a flow guiding surface on the side near the air hole 4, which is used to guide the airflow through the air hole 4 to the surface of the valve body assembly 1.

[0049] Specifically, in this embodiment, the flow guiding structure differs from the fairing 5 in Embodiment 1. It is a baffle integrally formed on the inner wall of the shell, which is not shown in the attached drawings. The installation posture of the baffle can be adjusted according to actual needs, preferably inclined. A flow guiding surface is formed on the side of the baffle near the air hole 4. Similar to Embodiment 1, this flow guiding surface can also be set as a plane or a curved surface, ensuring that the airflow can adhere to the surface of the flow guiding structure based on the Coanda effect.

[0050] Example 3 Based on Embodiment 1 above, this embodiment provides another pneumatic controller with integrated active heat dissipation function. The contents that are the same as in Embodiment 1 will not be repeated here; the differences are as follows: like Figure 5 As shown, in this embodiment, the extension section 7 extends further into the housing, which on the one hand allows the airflow entering from the first port 2 to act more concentratedly on the valve body assembly 1, and on the other hand makes the guide path longer, thereby allowing the airflow entering from the air hole 4 to flow more stably to the valve body assembly 1.

[0051] Example 3 Based on the above embodiments 1, 2 or 3, this embodiment provides a pneumatic system, including an air source, at least one air bag and a pneumatic controller as described in embodiment 1 or 2.

[0052] Specifically, in this embodiment, the first port 2 and the valve body assembly 1 are connected to the same air source for illustration. The output end of the air source is connected to the first port 2 of the pneumatic controller and the valve body assembly 1 respectively. The air bag is connected to the valve body assembly 1. The air source provides airflow power for the operation of the entire pneumatic system. The air bag, as an actuator, expands and contracts under the inflation and deflation control of the valve body assembly 1, adapting to various pneumatic control scenarios such as vehicle seat massage, lumbar support adjustment, side wing adjustment, and leg support adjustment.

[0053] In this embodiment, the pneumatic controller is the core integrated control and heat dissipation component of the system. It forms a complete pneumatic control and heat dissipation loop with the air source and the air bag. The airflow output by the air source is regulated by the valve body component 1 to realize the inflation and deflation of the air bag. On the other hand, it forms a high-speed airflow through the first port. With the help of the ejection effect and the Coanda effect, the pneumatic controller is driven to complete active heat dissipation. There is no need to add an additional heat dissipation air source or heat dissipation power component to the system, making the structure of the pneumatic system simpler and more integrated.

[0054] This pneumatic system effectively solves the problem of component failure and shortened lifespan caused by poor heat dissipation in the controller of traditional vehicle seat pneumatic systems, improving the working stability and service life of the entire pneumatic system. At the same time, the heat dissipation structure of the pneumatic controller is highly integrated into its own housing, without taking up additional installation space in the vehicle seat, adapting to the compact layout requirements inside the seat. Furthermore, the system can directly replace the pneumatic control components of existing vehicle seats without requiring major modifications to the original installation structure, making it highly versatile and convenient for upgrading existing vehicle pneumatic systems.

[0055] The above description is merely a preferred embodiment of this application and an explanation of the technical principles employed. Those skilled in the art should understand that the scope of the invention involved in this application is not limited to technical solutions formed by specific combinations of the above-described technical features, but should also cover other technical solutions formed by arbitrary combinations of the above-described technical features or their equivalents without departing from the inventive concept. For example, technical solutions formed by substituting the above features with (but not limited to) technical features with similar functions disclosed in this application.

Claims

1. A pneumatic controller with integrated active heat dissipation function, characterized in that, include: The housing has a valve assembly (1) inside, which is used to connect an external air source and at least one air bag to inflate and / or deflate the air bag; the housing has a first port (2) and a second port (3) connecting the interior and the external environment, the inlet end of the first port (2) being used to connect to the external air source; the housing also has an air hole (4) located on the periphery of the outlet end of the first port (2), so that when the airflow provided by the external air source passes through the first port (2), it drives the airflow at the air hole (4) to flow into the housing; A flow guiding structure is provided inside the housing to converge and accelerate the airflow entering through the air hole (4) into a forced heat dissipation airflow that sweeps directionally across the surface of the valve body assembly (1).

2. The pneumatic controller according to claim 1, characterized in that, The flow guiding structure is installed on the inner wall of the housing. The flow guiding structure has a flow guiding surface on the side near the air hole (4) for guiding the airflow through the air hole (4) to the surface of the valve body assembly (1).

3. The pneumatic controller according to claim 1, characterized in that, The flow guiding structure is a detachable shroud (5). The shroud (5) has an annular structure and is fitted on the outlet end of the first port (2) and the outside of the air hole (4). The inner wall of the shroud (5) has a flow guiding surface, which is used to guide the airflow through the air hole (4) to the surface of the valve body assembly (1).

4. The pneumatic controller according to claim 3, characterized in that, The inner diameter of the fairing (5) is gradually changing, and the radial dimensions at both ends are greater than the radial dimensions at the middle, so that the inner wall of the fairing (5) forms a flow-guiding surface (6); the flow-guiding surface (6) is the flow-guiding surface in the form of a curved surface.

5. The pneumatic controller according to claim 1, characterized in that, The second port (3) is opened at the end of the housing away from the first port (2) so that the airflow path inside the housing passes through the valve body assembly (1).

6. The pneumatic controller with integrated active heat dissipation function according to claim 1, characterized in that, The second port (3) has multiple openings, and the multiple second ports (3) are independent of each other.

7. The pneumatic controller with integrated active heat dissipation function according to claim 4, characterized in that, A pneumatic controller with integrated active heat dissipation function is characterized in that the outlet end of the first port (3) is formed with an extension section (7) extending into the interior of the housing; a flow path (8) is formed between the outer wall of the extension section (7) and the inner wall of the shroud (5).

8. The pneumatic controller with integrated active heat dissipation function according to claim 1, characterized in that, The air holes (4) are provided in multiple ways, and the multiple air holes (4) are arranged circumferentially along the first opening (2).

9. The pneumatic controller according to claim 8, characterized in that, The furthest distance between the multiple air holes (4) is greater than the central inner diameter of the fairing (5).

10. The pneumatic controller according to claim 1, characterized in that, The inner diameter of the vent (4) is gradually changing, and the radial dimension of one end near the inside of the shell is smaller than the radial dimension of the other end.

11. The pneumatic controller according to claim 1, characterized in that, The housing includes a detachably connected upper shell (9) and lower shell (10).

12. A pneumatic system comprising an air source, at least one air bag, and a pneumatic controller as described in any one of claims 1-11.

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