An intelligent air conditioning control valve

Abstract

This invention provides an intelligent air conditioning regulating valve, belonging to the field of regulating valve technology. The invention includes a valve body and an upper valve cover sealed together as a single unit, and further includes a multi-stage buffer assembly and a magnetic air guiding assembly. During valve opening and closing, the multi-stage buffer assembly buffers the valve in two directions. The cooperation between the limiting rod, guide sleeve, and oil reservoir improves the concentricity of the valve during opening and closing. The oil reservoir provides lubrication and buffering for the valve and assists in smooth valve opening and closing through changes in internal hydraulic oil pressure. The magnetic air guiding assembly controls the movement of a magnetic plate within the air guiding cavity by the movement of a magnetic ring, dynamically controlling the saturation level of the air bladder. When the valve is closed, the magnetic plate pushes gas into the air bladder, causing it to inflate and tightly adhere to the side wall of the limiting cavity, enhancing the valve's sealing performance. When the valve is open, the magnetic plate reduces the amount of gas in the air bladder through a suction action, reducing wear on the air bladder surface and extending the valve's service life.

Description

Technical Field

[0001] This invention relates to the field of regulating valve technology, and more specifically, to an intelligent regulating valve for air conditioning. Background Technology

[0002] With increasing demands for air conditioning comfort and growing focus on energy efficiency, automatic control systems are finding wider application. Electric regulating valves in air conditioning water systems are one of the fundamental actuators for automatic regulation. These valves are typically located on the return water pipe of the air conditioning unit and adjust the water flow to change the unit's output load, adapting to variations in the room's actual load and maintaining a constant room temperature. The operating characteristics of these regulating valves directly affect the air conditioning performance; therefore, studying their operating characteristics in air conditioning water systems is of significant practical importance.

[0003] There has been considerable research on the characteristics of control valves, but traditional control valves mostly use soft-seal structures, which have poor sealing performance and affect their control accuracy. Due to the poor seal, the medium may still pass through the valve when it is closed, making it impossible to accurately regulate the actual load of the air conditioning unit. This results in a deviation between the actual load and the set value, making it difficult to maintain a constant temperature in the air-conditioned room. Furthermore, traditional control valves have low concentricity and lack valve buffering, making them prone to shocks and vibrations during opening and closing. These shocks and vibrations are transmitted to the entire system, affecting the stability and reliability of the system.

[0004] How to invent an intelligent air conditioning control valve to solve these problems has become an urgent issue for those skilled in the art. Summary of the Invention

[0005] To overcome the above deficiencies, the present invention provides an intelligent air conditioning regulating valve, which aims to solve the problems mentioned in the background.

[0006] This invention is implemented as follows: This invention provides an intelligent air conditioning regulating valve, comprising a valve body and an upper valve cover integrally sealed together. The valve body has an inlet chamber and an outlet chamber for fluid media to pass through. A guide platform and a mounting rod are mounted on the top of the upper valve cover. A valve actuator is fixedly mounted on the top of the mounting rod. The valve actuator is electrically connected to an external control system. A valve stem is connected to the output end of the valve actuator, which controls the raising and lowering of the valve stem. A sealing plug is mounted on the top of the upper valve cover, located between the upper valve cover and the guide platform. The lower end of the valve stem passes vertically downwards through the guide platform and the sealing plug before entering the valve body cavity. A valve is mounted on the end of the valve stem within the valve body cavity. A limiting cavity matching the valve is provided through the middle of the inlet and outlet chambers. The valve includes a valve plug and a lower plug plate fixedly connected to the bottom of the valve plug. The top of the valve plug is fixedly connected to the lower end of the valve stem. The valve also includes: Multi-stage buffer assembly: The multi-stage buffer assembly is installed inside the valve and valve body; Magnetic air guiding component: The magnetic air guiding component is installed inside the valve body.

[0007] Preferably, the multi-stage buffer assembly includes an oil storage chamber at the bottom of the valve stem and a limiting rod and a second spring at the bottom of the valve body cavity. The lower end of the second spring and the limiting rod are both fixedly connected to the inner cavity of the valve body. The second spring is sleeved on the outside of the limiting rod, and a limiting ring is fixedly connected to the upper end of the second spring. The lower end of the oil storage chamber penetrates the bottom wall of the lower plug plate. A guide sleeve is fixedly connected to the lower side of the lower plug plate corresponding to the oil storage chamber. The oil storage chamber is configured to cooperate with the limiting rod. An installation groove is opened on the side wall of the lower plug plate, and an airbag is installed inside the installation groove.

[0008] Preferably, the guide sleeve has a channel that matches the limiting rod, the inner cavity of the valve body has a limiting groove that matches the guide sleeve, and the middle part of the limiting ring has an opening that matches the guide sleeve.

[0009] Preferably, a buffer chamber is provided inside the valve plug corresponding to the oil storage chamber. The buffer chamber surrounds the oil storage chamber and is filled with hydraulic oil. A first spring is fixedly connected to the bottom wall of the buffer chamber, and a magnetic ring is fixedly connected to the upper end of the first spring. Multiple liquid guide ports are opened on the lower side wall of the buffer chamber facing the oil storage chamber. The ends of the liquid guide ports penetrate the side walls of the oil storage chamber and the buffer chamber. Multiple liquid guide channels are provided at the upper end of the limiting rod. The ends of the liquid guide channels penetrate the top wall and side wall of the limiting rod.

[0010] Preferably, the magnetic ring and the buffer cavity, the limiting rod and the oil storage cavity and the guide sleeve are all slidably sealed connections, and the multiple liquid guide ports and liquid guide channels are all distributed in a ring at equal intervals along the central axis of the oil storage cavity.

[0011] Preferably, the magnetic ring is always positioned above the liquid inlet.

[0012] Preferably, when the valve is open, the lower end of the liquid guiding channel is directly opposite the liquid guiding port, the first spring is in a stretched state when the valve is open, and the lower end of the liquid guiding channel is blocked by the guide sleeve when the valve is closed.

[0013] Preferably, the mounting groove and the airbag are both annularly arranged, the airbag is made of TPU material, and the valve actuator is an electric actuator.

[0014] Preferably, the magnetic air guiding assembly includes an air guiding cavity, a magnetic plate, and multiple air guiding channels disposed within the valve. The air guiding cavity is arranged around the outside of the buffer cavity, the magnetic plate is slidably disposed inside the air guiding cavity, and the multiple air guiding channels are arranged around the air guiding cavity. The lower sidewall of the air guiding cavity is connected to the upper end of the air guiding channel, and the lower end of the air guiding channel is connected to the sidewall of the airbag.

[0015] Preferably, the magnetic ring and the magnetic plate are configured with opposite magnetic poles, the magnetic force between the magnetic ring and the magnetic plate is greater than the pressure of the gas in the air guide cavity, the airbag is in an unsaturated state when the valve is open, and the side wall of the airbag is in close contact with the side wall of the limiting cavity when the valve is closed.

[0016] The beneficial effects of this invention are: During the valve opening and closing process, the multi-stage buffer assembly buffers the valve in two directions, effectively absorbing and dispersing the impact force generated by the valve movement. This not only protects the valve and valve body from damage, but also improves the stability and durability of the valve. At the same time, through the cooperation between the limit rod, guide sleeve, and oil reservoir, the concentricity of the valve during opening and closing is improved, which helps to ensure that the valve maintains a stable movement trajectory during opening and closing, avoiding wear and leakage problems caused by shaking or deviation. Meanwhile, the presence of the oil reservoir not only provides the valve with necessary lubrication and buffering, but also assists in the smooth opening and closing of the valve through the change of hydraulic oil pressure inside.

[0017] Meanwhile, the magnetic air guiding assembly controls the movement of the magnetic plate within the air guiding cavity by the movement of the magnetic ring, dynamically controlling the saturation level of the airbag. When the valve is closed, the magnetic plate pushes gas into the airbag, causing it to inflate and tightly adhere to the side wall of the limiting cavity, thereby enhancing the valve's sealing performance. When the valve is open, the magnetic plate reduces the amount of gas in the airbag through a suction action, reducing the wear between the airbag surface and the side wall of the limiting cavity, and extending the valve's service life. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the overall structure of an intelligent air conditioning regulating valve provided by an embodiment of the present invention; Figure 2 This is a schematic diagram of the valve stem and valve structure of an intelligent air conditioning regulating valve provided by an embodiment of the present invention; Figure 3 This is a schematic diagram of a limit rod structure for an intelligent air conditioning regulating valve provided by an embodiment of the present invention; Figure 4 This is a schematic cross-sectional view of an intelligent air conditioning regulating valve when it is open, provided by an embodiment of the present invention. Figure 5 This invention provides an intelligent air conditioning regulating valve. Figure 4 Enlarged structural diagram at point A in the middle; Figure 6 This is a front view schematic diagram of the cross-sectional structure of an air conditioning intelligent regulating valve when the valve is open, provided by an embodiment of the present invention; Figure 7 This is a schematic cross-sectional view of an air conditioning intelligent regulating valve when it is closed, provided by an embodiment of the present invention. Figure 8 This invention provides an intelligent air conditioning regulating valve. Figure 7 Enlarged structural diagram at point B; Figure 9 This is a front view schematic diagram of the cross-sectional structure of an air conditioning intelligent regulating valve when the valve is closed, provided by an embodiment of the present invention.

[0020] In the diagram: 1. Valve body; 2. Valve actuator; 3. Valve plug; 4. Limiting chamber; 5. Air bladder; 6. Oil reservoir; 7. Buffer chamber; 8. Limiting rod; 9. Air guide chamber; 11. Inlet chamber; 12. Outlet chamber; 13. Upper valve cover; 21. Valve stem; 22. Guide platform; 23. Sealing plug; 24. Mounting rod; 31. Lower plug plate; 32. Guide sleeve; 33. Limiting groove; 61. Liquid guide port; 71. First spring; 72. Magnetic ring; 81. Liquid guide channel; 82. Second spring; 83. Limiting ring; 91. Air guide channel; 92. Magnetic plate. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0022] Example 1, refer to Figures 1-5 An intelligent air conditioning regulating valve includes a valve body 1 and an upper valve cover 13 that are sealed and connected as one unit. The valve body 1 has an inlet chamber 11 and an outlet chamber 12 for fluid medium to pass through. A guide platform 22 and a mounting rod 24 are mounted on the top of the upper valve cover 13. A valve actuator 2 is fixedly mounted on the top of the mounting rod 24. The valve actuator 2 is electrically connected to an external control system. A valve stem 21 is connected to the output end of the valve actuator 2. The valve actuator 2 controls the raising and lowering of the valve stem 21. The valve actuator 2 can receive control signals and drive the valve stem 21 to move up and down. A sealing plug 23 is installed on the top of the upper valve cover 13, located between the upper valve cover 13 and the guide platform 22, to prevent fluid from flowing through. The medium flows out from the upper valve cover 13. The lower end of the valve stem 21 passes vertically downward through the guide plate 22 and the sealing plug 23 before entering the inner cavity of the valve body 1. The sealing plug 23 and the guide plate 22 effectively support the valve stem 21. A valve is installed at the end of the valve stem 21 located in the inner cavity of the valve body 1. A limiting cavity 4 matching the valve is provided in the middle of the inlet cavity 11 and the outlet cavity 12. The flow rate of the fluid is controlled by the cooperation between the valve and the limiting cavity 4. The valve includes a valve plug 3 and a lower plug plate 31 fixedly connected to the bottom of the valve plug 3. The top of the valve plug 3 is fixedly connected to the lower end of the valve stem 21. The lower plug plate 31 prevents the valve from disengaging from the limiting cavity 4. The valve also includes: Multi-stage buffer assembly: The multi-stage buffer assembly is installed inside the valve and valve body 1; Magnetic air guiding component: The magnetic air guiding component is installed inside the valve body 1.

[0023] Furthermore, the multi-stage buffer assembly includes an oil storage chamber 6 at the bottom of the valve stem 21 and a limiting rod 8 and a second spring 82 at the bottom of the inner cavity of the valve body 1. The lower end of the second spring 82 and the limiting rod 8 are both fixedly connected to the inner cavity of the valve body 1. The second spring 82 is sleeved on the outside of the limiting rod 8. The upper end of the second spring 82 is fixedly connected to a limiting ring 83. The lower end of the oil storage chamber 6 penetrates the bottom wall of the lower plug plate 31. A guide sleeve 32 is fixedly connected to the lower side of the lower plug plate 31 corresponding to the oil storage chamber 6. The oil storage chamber 6 is configured to cooperate with the limiting rod 8. When the valve stem 21 moves, the valve plug 3, the lower plug plate 31, and the guide sleeve 32 will all move accordingly.

[0024] The guide sleeve 32 has a channel that matches the limiting rod 8. The inner cavity of the valve body 1 has a limiting groove 33 that matches the guide sleeve 32. When the valve stem 21 moves the valve, the guide sleeve 32 will slide along the limiting rod 8. When the valve stem 21 moves down to open the valve, the lower stopper plate 31 will squeeze the second spring 82 through the limiting ring 83 to buffer the bottom of the valve and avoid the valve from directly colliding with the inner cavity of the valve body 1. The limiting ring 83 has an opening in the middle that matches the guide sleeve 32 to ensure that the movement of the guide sleeve 32 will not interfere with the limiting ring 83.

[0025] A buffer chamber 7 is provided inside the valve plug 3 corresponding to the oil storage chamber 6. The buffer chamber 7 surrounds the oil storage chamber 6 and is filled with hydraulic oil. A first spring 71 is fixedly connected to the bottom wall of the buffer chamber 7, and a magnetic ring 72 is fixedly connected to the upper end of the first spring 71. Multiple liquid guide ports 61 are opened on the lower side wall of the buffer chamber 7 facing the oil storage chamber 6. The ends of the liquid guide ports 61 penetrate the side walls of the oil storage chamber 6 and the buffer chamber 7. Multiple liquid guide channels 81 are provided on the upper end of the limiting rod 8. The ends of the liquid guide channels 81 penetrate the top wall and side wall of the limiting rod 8. When the valve moves down, the volume of the limiting rod 8 in the oil storage chamber 6 will also increase accordingly. The space of the oil storage chamber 6 is fixed, so the hydraulic oil in the oil storage chamber 6 will enter the buffer chamber 7 through the liquid guide ports 61.

[0026] It should be noted that the magnetic ring 72 and the buffer chamber 7, as well as the limit rod 8 and the oil storage chamber 6 and guide sleeve 32, are all connected by sliding seals to prevent hydraulic oil from flowing out of the gaps. Multiple guide ports 61 and guide channels 81 are distributed in a ring at equal intervals along the central axis of the oil storage chamber 6. The magnetic ring 72 is always positioned above the guide port 61, ensuring that hydraulic oil does not enter the upper part of the magnetic ring 72 from the guide port 61. When the valve is open, the lower end of the guide channel 81 is directly opposite the guide port 61. Even if the guide port 61 is blocked by the limit rod 8, the hydraulic oil in the oil storage chamber 6 will still enter the buffer chamber 7 through the guide channel 81 at the upper end of the limit rod 8. When the valve is open... The first spring 71 is in a stretched state. When the hydraulic oil in the oil storage chamber 6 is squeezed into the buffer chamber 7, this part of the hydraulic oil will push the magnetic ring 72 to increase the volume of the buffer chamber 7 below the magnetic ring 72. The first spring 71 will also be stretched accordingly. Through the hydraulic oil in the oil storage chamber 6 and the setting of the first spring 71 and magnetic ring 72 in the buffer chamber 7, the valve can be buffered twice inside the valve, further reducing the impact force on the valve when opening and closing, and improving the service life of the valve. When the valve is closed, the lower end of the liquid guiding channel 81 is blocked by the guide sleeve 32, which prevents the hydraulic oil from flowing from the liquid guiding channel 81 to the outlet chamber 12.

[0027] In this embodiment, when the valve is in the closed state (refer to...) Figures 7-8When the valve stem 21, valve plug 3, lower plug plate 31 and guide sleeve 32 are all in the upper position, the oil storage chamber 6 is filled with hydraulic oil, while the buffer chamber 7 is in a relatively small volume state, the first spring 71 is in an unstretched or slightly stretched state, and the magnetic ring 72 is located above the liquid guide port 61.

[0028] When the valve needs to be opened, the valve actuator 2 receives the control signal and drives the valve stem 21 to descend. As the valve stem 21 descends, the valve plug 3, the lower plug plate 31, and the guide sleeve 32 also move down. During the descent, the guide sleeve 32 slides along the limit rod 8 and is guided by the limit ring 83, and finally inserts into the limit groove 33 to ensure that the valve descends stably.

[0029] As the valve continues to move downward, the lower stopper plate 31 will squeeze the second spring 82 through the limit ring 83. The second spring 82 is compressed and produces a buffering effect, which avoids the valve from directly colliding with the inner cavity of the valve body 1. At the same time, due to the downward movement of the valve, the hydraulic oil in the oil storage chamber 6 is squeezed and begins to look for an outlet.

[0030] Since the magnetic ring 72 and the buffer chamber 7, as well as the limit rod 8 and the oil storage chamber 6 and guide sleeve 32 are all connected by sliding seals, hydraulic oil cannot flow out from these gaps. Therefore, hydraulic oil will enter the buffer chamber 7 through the guide port 61. Even when the guide port 61 is temporarily blocked by the limit rod 8, hydraulic oil can still enter the buffer chamber 7 through the guide channel 81 at the upper end of the limit rod 8.

[0031] As hydraulic oil enters, the volume of the buffer chamber 7 (bottom of the magnetic ring 72) begins to increase, which in turn pushes the magnetic ring 72 upward. The rise of the magnetic ring 72 further stretches the first spring 71. In this way, the hydraulic oil in the oil storage chamber 6 and the first spring 71 and magnetic ring 72 in the buffer chamber 7 together constitute a secondary buffer for the valve.

[0032] When the valve is fully open, the lower end of the fluid guide channel 81 is still blocked by the guide sleeve 32, which prevents hydraulic oil from flowing from the fluid guide channel 81 to the outlet chamber 12. At this time, the valve is in a stable open state, and the fluid medium can flow smoothly from the inlet chamber 11 to the outlet chamber 12.

[0033] When the valve needs to be closed, the valve actuator 2 receives the control signal again and drives the valve stem 21 to rise. As the valve stem 21 rises, the valve plug 3, the lower plug plate 31, and the guide sleeve 32 also rise. During the rise, the guide sleeve 32 continues to slide along the limit rod 8 and is guided by the limit groove 33. At the same time, due to the rise of the valve, the hydraulic oil pressure in the oil storage chamber 6 decreases, the first spring 71 begins to retract and drives the magnetic ring 72 to fall. In this way, the hydraulic oil in the buffer chamber 7 flows back into the oil storage chamber 6 through the guide port 61 and the guide channel 81.

[0034] When the valve is fully closed, the multi-stage buffer assembly returns to its initial state, awaiting the next opening and closing operation. Through the setting of the multi-stage buffer assembly, the intelligent air conditioning regulating valve can effectively reduce the impact force during valve opening and closing, and improve the service life of the valve. At the same time, through the cooperation between the limit rod 8, the guide sleeve 32, and the oil reservoir 6, the concentricity of the valve during opening and closing is improved. This design helps to ensure that the valve maintains a stable movement trajectory during opening and closing, avoiding wear and leakage problems caused by shaking or deviation. Meanwhile, the presence of the oil reservoir 6 not only provides the valve with the necessary lubrication and buffer, but also assists the smooth opening and closing of the valve through the change of hydraulic oil pressure inside it.

[0035] Example 2, refer to Figures 2-5 The lower stopper plate 31 has an installation groove on its side wall, and an air bladder 5 is installed inside the installation groove. By setting the air bladder 5 on the lower stopper plate 31, the possibility of fluid medium flowing through the gap between the valve and the limiting cavity 4 when the valve is closed can be effectively reduced.

[0036] It should be noted that both the mounting groove and the airbag 5 are annular, ensuring uniform sealing when the valve is closed. The airbag 5 is made of TPU (thermoplastic polyurethane), which has good elasticity, wear resistance, and chemical corrosion resistance, and can maintain stable performance under different temperature and pressure conditions. This allows the airbag 5 to effectively fill the tiny gap between the valve and the limiting cavity 4 when the valve is closed, preventing fluid leakage. The valve actuator 2 is an electric actuator, which has the advantages of fast response speed, high control accuracy, and easy integration into automation systems. By receiving control signals from the external control system, the electric actuator can accurately control the lifting and lowering movement of the valve stem 21, thereby realizing the opening and closing of the valve.

[0037] In this embodiment, the airbag 5 is installed on the side wall of the lower stopper plate 31, specifically in an annular mounting groove. This annular arrangement ensures that the airbag 5 can evenly expand around the gap between the valve and the limiting cavity 4 when the valve is closed, thereby providing a uniform sealing effect.

[0038] The airbag 5 is made of TPU (thermoplastic polyurethane) material. TPU material has good elasticity, wear resistance and chemical corrosion resistance, and can maintain stable performance under different temperature and pressure conditions. This allows the airbag 5 to effectively fill the tiny gap between the valve and the limiting chamber 4 when the valve is closed, preventing fluid medium leakage.

[0039] When the valve is closed, the lower stopper plate 31 forms a primary contact seal with the side wall of the limiting cavity 4. At the same time, the airbag 5 will adhere to the side wall of the limiting cavity 4 to form a secondary seal. Due to the elasticity of the airbag 5 and the sealing performance of the TPU material, it can effectively prevent the fluid medium from flowing through the gap between the valve and the limiting cavity 4.

[0040] By providing an airbag 5 on the lower stopper plate 31, the intelligent air conditioning regulating valve in Embodiment 2 can provide higher sealing performance when the valve is closed, which helps to reduce the leakage of fluid media and improve the overall efficiency and safety of the system.

[0041] Example 3, referring to Figures 4-9 The magnetic air guiding assembly includes an air guiding chamber 9, a magnetic plate 92, and multiple air guiding channels 91 disposed within the valve. The air guiding chamber 9 is arranged around the outside of the buffer chamber 7. The magnetic plate 92 is slidably disposed inside the air guiding chamber 9. Multiple air guiding channels 91 are arranged around the air guiding chamber 9. The lower sidewall of the air guiding chamber 9 is connected to the upper end of the air guiding channel 91, and the lower end of the air guiding channel 91 is connected to the sidewall of the airbag 5. These channels allow gas to flow between the air guiding chamber 9 and the airbag 5. The saturation level of the airbag 5 can be controlled by the movement of the magnetic plate 92 within the air guiding chamber 9.

[0042] It should be noted that the opposing surfaces of the magnetic ring 72 and the magnetic plate 92 are set with opposite magnetic poles. The magnetic force between the opposing surfaces of the magnetic ring 72 and the magnetic plate 92 is greater than the pressure of the gas in the air guide cavity 9. This ensures that when the magnetic plate 92 moves downward with the magnetic ring, it can effectively push the gas in the air guide cavity 9 through the air guide channel 91 into the airbag 5, thereby effectively inflating it. When the magnetic ring 72 slides, the magnetic plate 92 will move accordingly under the drive of the magnetic force. The movement of the magnetic plate 92 will change the gas distribution in the air guide cavity 9, and thus the state of the airbag 5 can be controlled through the air guide channel 91. When the valve is open, the airbag 5 is in an unsaturated state. During the valve opening process, the magnetic ring 72 moves upward, and the magnetic plate 92 also moves upward. The movement of the magnetic plate 92 will perform a suction action, and some of the gas in the airbag 5 will be drawn into the air guide cavity 9 through the air guide channel 91 to reduce its saturation. This can effectively reduce the wear between the surface of the airbag 5 and the side wall of the limiting cavity 4. When the valve is closed, the side wall of the airbag 5 and the side wall of the limiting cavity 4 are tightly pressed together. During the valve closing process, under the action of the first spring 71, the magnetic ring 72 will move down, and the magnetic plate 92 will also move down. At this time, the movement of the magnetic plate 92 will perform an exhaust action, and the gas in the air guide cavity 9 will be discharged into the airbag 5 through the air guide channel 91 to increase its saturation, thereby increasing the fit and sealing degree between the airbag 5 and the limiting cavity 4 when the valve is closed.

[0043] In this embodiment, as can be seen from Embodiment 1, when the valve needs to be closed, the magnetic ring 72 moves downward under the action of the first spring 71. Since the opposite surfaces of the magnetic ring 72 and the magnetic plate 92 are set with different magnetic poles, and the magnetic force between them is greater than the pressure of the gas in the air guide cavity 9, the magnetic plate 92 will move downward with the magnetic ring 72.

[0044] As the magnetic plate 92 moves downward, it pushes the gas in the air guide cavity 9 through the air guide channel 91 into the air bag 5, causing the air bag 5 to inflate and tightly fit the side wall of the limiting cavity 4, thereby increasing the sealing degree when the valve is closed.

[0045] When the valve needs to be opened, the magnetic ring 72 moves upward. Due to the magnetic force, the magnetic plate 92 also moves upward. During the upward movement of the magnetic plate 92, it draws air into the air chamber 9 through the air channel 91, causing some of the gas in the airbag 5 to flow back into the air chamber 9 through the air channel 91, thereby reducing the saturation of the airbag 5. This reduces the wear between the surface of the airbag 5 and the side wall of the limiting cavity 4 when the valve is opened, and extends the service life of the valve.

[0046] In summary, the magnetic air guiding assembly in Embodiment 3 controls the saturation level of the airbag 5 by moving the magnetic plate 92, which enables the valve to have better sealing performance when closed and reduces the wear of the airbag 5 when open. This design not only improves the performance of the valve, but also extends the service life of the valve.

[0047] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0048] It should be noted that the specific model and specifications of the valve actuator 2 need to be selected and determined according to the actual specifications of the device. The specific selection calculation method adopts the existing technology in this field, so it will not be described in detail.

[0049] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the invention by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the invention should be included within the scope of protection of the invention.

Claims

1. An intelligent regulating valve for air conditioning, comprising a valve body (1) and an upper valve cover (13) integrally sealed, wherein the valve body (1) is provided with an inlet chamber (11) and an outlet chamber (12) for fluid medium to pass through, and a guide plate (22) and a mounting rod (24) are installed on the top of the upper valve cover (13), wherein a valve actuator (2) is fixedly installed on the top of the mounting rod (24), the valve actuator (2) is electrically connected to an external control system, and a valve stem (21) is connected to the output end of the valve actuator (2), the valve actuator (2) is used to control the lifting and lowering of the valve stem (21), and the valve stem (21) is located on the upper valve cover (13). 3) A sealing plug (23) is installed on the top of the upper valve cover (13) between the guide platform (22). The lower end of the valve stem (21) passes vertically downward through the guide platform (22) and the sealing plug (23) and enters the inner cavity of the valve body (1). A valve is installed at the end of the valve stem (21) located in the inner cavity of the valve body (1). A limiting cavity (4) matching the valve is provided in the middle of the inlet cavity (11) and the outlet cavity (12). The valve includes a valve plug (3) and a lower plug plate (31) fixedly connected to the bottom of the valve plug (3). The top of the valve plug (3) is fixedly connected to the lower end of the valve stem (21). Also includes: Multi-stage buffer assembly: The multi-stage buffer assembly is disposed inside the valve and valve body (1); the multi-stage buffer assembly includes an oil storage chamber (6) disposed at the bottom of the valve stem (21) and a limiting rod (8) and a second spring (82) disposed at the bottom of the inner cavity of the valve body (1). The lower end of the second spring (82) and the limiting rod (8) are fixedly connected to the inner cavity of the valve body (1). The second spring (82) is sleeved on the outside of the limiting rod (8). The upper end of the second spring (82) is fixedly connected to a limiting ring (83). The lower end of the oil storage chamber (6) penetrates the bottom wall of the lower plug plate (31). A guide sleeve (32) is fixedly connected to the lower side of the lower plug plate (31) corresponding to the oil storage chamber (6). The oil storage chamber (6) is configured to cooperate with the limiting rod (8). The lower plug plate (31) The side wall of the device is provided with an installation groove, and an airbag (5) is installed inside the installation groove; a buffer chamber (7) is provided in the valve plug (3) corresponding to the oil storage chamber (6), the buffer chamber (7) is arranged around the oil storage chamber (6), the oil storage chamber (6) is filled with hydraulic oil, a first spring (71) is fixedly connected to the bottom wall of the buffer chamber (7), a magnetic ring (72) is fixedly connected to the upper end of the first spring (71), a plurality of liquid guide ports (61) are provided on the lower side wall of the buffer chamber (7) facing the oil storage chamber (6), the end of the liquid guide port (61) penetrates the side wall of the oil storage chamber (6) and the buffer chamber (7), a plurality of liquid guide channels (81) are provided on the upper end of the limiting rod (8), and the end of the liquid guide channel (81) penetrates the top wall and side wall of the limiting rod (8); Magnetic air guiding component: The magnetic air guiding component is installed inside the valve body (1).

2. The intelligent air conditioning regulating valve according to claim 1, characterized in that, The guide sleeve (32) has a channel that matches the limiting rod (8), the inner cavity of the valve body (1) has a limiting groove (33) that matches the guide sleeve (32), and the middle part of the limiting ring (83) has an opening that matches the guide sleeve (32).

3. The intelligent air conditioning regulating valve according to claim 1, characterized in that, The magnetic ring (72) and the buffer cavity (7), the limiting rod (8) and the oil storage cavity (6) and the guide sleeve (32) are all sliding sealed connections. The multiple liquid guide ports (61) and liquid guide channels (81) are all distributed in a ring at equal intervals along the central axis of the oil storage cavity (6).

4. The intelligent air conditioning regulating valve according to claim 1, characterized in that, The magnetic ring (72) is always positioned above the liquid inlet (61).

5. The intelligent air conditioning regulating valve according to claim 1, characterized in that, When the valve is open, the lower end of the liquid guiding channel (81) is directly opposite the liquid guiding port (61), the first spring (71) is in a stretched state when the valve is open, and the lower end of the liquid guiding channel (81) is blocked by the guide sleeve (32) when the valve is closed.

6. The intelligent air conditioning regulating valve according to claim 1, characterized in that, The mounting groove and the airbag (5) are both annularly arranged. The airbag (5) is made of TPU material. The valve actuator (2) is an electric actuator.

7. The intelligent air conditioning regulating valve according to claim 1, characterized in that, The magnetic air guiding assembly includes an air guiding chamber (9) disposed inside the valve, a magnetic plate (92) and multiple air guiding channels (91). The air guiding chamber (9) is disposed around the outside of the buffer chamber (7). The magnetic plate (92) is slidably disposed inside the air guiding chamber (9). The multiple air guiding channels (91) are disposed around the air guiding chamber (9). The lower sidewall of the air guiding chamber (9) is connected to the upper end of the air guiding channel (91). The lower end of the air guiding channel (91) is connected to the sidewall of the airbag (5).

8. An intelligent air conditioning regulating valve according to claim 7, characterized in that, The magnetic ring (72) and the magnetic plate (92) are set with opposite magnetic poles. The magnetic force between the magnetic ring (72) and the magnetic plate (92) is greater than the pressure of the gas in the air guide cavity (9). When the valve is open, the air bag (5) is in an unsaturated state. When the valve is closed, the side wall of the air bag (5) is in close contact with the side wall of the limiting cavity (4).

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