An underwater sealed chamber air disinfection and purification system and control method

Abstract

This invention discloses an underwater sealed chamber air disinfection and purification system and control method. The system achieves the following functions: high-temperature disinfection of polluted air in the underwater sealed chamber under pressure, removal of carbon dioxide, odors, and other harmful gas components, providing clean air to the underwater sealed chamber, and oxygen supplementation when needed; high-temperature disinfection of polluted air in the underwater sealed chamber under pressurized intake, removal of carbon dioxide, odors, and other harmful gas components, providing clean air to the underwater sealed chamber, and pressurizing the underwater sealed chamber, and oxygen supplementation when needed; and high-temperature disinfection of polluted air in the underwater sealed chamber under depressurized exhaust, removal of carbon dioxide, odors, and other harmful gas components, providing clean air to the underwater sealed chamber, and depressurizing the underwater sealed chamber, and oxygen supplementation when needed.

Description

Technical Field

[0001] This invention relates to the field of underwater sealed chamber technology, and in particular to an underwater sealed chamber air disinfection and purification system and control method. Background Technology

[0002] Existing underwater sealed chambers can achieve simple ventilation to purify the air, but they cannot perform functions such as high-temperature disinfection of polluted air in underwater sealed chambers, removal of carbon dioxide, odors and other harmful gas components from polluted air, or oxygen replenishment, thus failing to provide underwater workers with more comfortable living conditions. Summary of the Invention

[0003] This invention addresses the problems and shortcomings of existing technologies by providing an underwater enclosed chamber air disinfection and purification system and control method.

[0004] The present invention solves the above-mentioned technical problems through the following technical solution:

[0005] This invention provides an underwater sealed chamber air disinfection and purification system. The underwater sealed chamber includes a sealed chamber body. The system includes a disinfection and purification device fixed within the sealed chamber body. The disinfection and purification device includes a shell. A mesh can is fixed to the right top wall of the shell. The mesh can is filled with a packaging absorbent containing soda lime and activated carbon. A transverse partition is fixed to the bottom of the mesh can. The transverse partition divides the space inside the shell into a first cavity and a third cavity on the right side and a second cavity on the left side. A fan is fixed to the upper part of the inner wall of the second cavity, facing the first cavity. The right end of the shell and corresponding to... The first chamber has an exhaust port and the corresponding third chamber has an air inlet. The top right end, top left end and bottom right end of the transverse partition are respectively fixed with a first micro motor, a second micro motor and a third micro motor. The output shaft of the first micro motor is fixed with a first rotating shaft and a first baffle is sleeved and fixed on the first rotating shaft. The output shaft of the second micro motor is fixed with a second rotating shaft and a second baffle is sleeved and fixed on the second rotating shaft. The output shaft of the third micro motor is fixed with a third rotating shaft and a third baffle is sleeved and fixed on the third rotating shaft. The left side of the mesh can is sequentially fixed with a primary filter, a heating mesh and a high-efficiency filter.

[0006] The system also includes a compressed air cylinder, an oxygen supply cylinder, and an external pressure sensor fixed to the outside of the sealed chamber, and an internal pressure sensor, an oxygen concentration sensor, and a controller fixed inside the sealed chamber. The compressed air cylinder is connected to the sealed chamber through an air inlet pipe, and a pressure reducing valve and an air inlet control valve are sequentially installed on the air inlet pipe. The oxygen supply cylinder is connected to the sealed chamber through an oxygen supply pipe, and an oxygen supply control valve is installed on the oxygen supply pipe. The heating grid is electrically connected to the controller through a switch.

[0007] The internal pressure sensor is used to detect the internal pressure value inside the sealed chamber in real time, the external pressure sensor is used to detect the external pressure value outside the sealed chamber in real time, and the oxygen concentration sensor is used to detect the oxygen concentration value inside the sealed chamber in real time.

[0008] The controller is used to determine whether the internal pressure value and the external pressure value are consistent within a set time period. If they are consistent, the internal and external pressures reach equilibrium, and the sealed chamber needs to be pressurized. When the sealed chamber needs to be pressurized, the controller controls the first micro motor to drive the first baffle to rotate to a first target angle to open the exhaust port, the second micro motor to drive the second baffle to rotate to separate the first chamber and the second chamber, and the third micro motor to drive the third baffle to rotate to the first target angle to open the air inlet. This allows polluted air in the sealed chamber to flow into the first chamber through the exhaust port, while clean air in the third chamber enters the sealed chamber. The controller controls the opening and closing of the baffle and starts timing so that the heating mesh can perform high-temperature disinfection and purification of viruses on the primary filter and the high-efficiency filter. Then, when the timing reaches the first preset time, the controller controls the first... A micro motor drives the first baffle to rotate, closing the exhaust port; a third micro motor drives the third baffle to rotate, closing the air inlet. When the timer reaches the second preset time, the control switch is turned off, the fan is turned on, and the second micro motor drives the second baffle to rotate, preventing the second baffle from separating the first and second chambers. Clean air, purified by high-temperature disinfection in the first chamber, enters the second and third chambers. The timer is maintained, and this disinfection and purification operation is repeated after the timer reaches the third preset time. During the disinfection and purification operation, the controller determines whether the current oxygen concentration is higher than the minimum set oxygen concentration corresponding to the pressure inside the chamber when the internal and external pressures are balanced. If not, the oxygen replenishment control valve is opened to replenish oxygen in the sealed chamber until the oxygen concentration inside the sealed chamber reaches at least the minimum set oxygen concentration. If yes, no oxygen replenishment is required.

[0009] The controller is used to determine that the internal and external pressure values ​​are inconsistent, and the internal pressure value is less than the external pressure value, indicating that the sealed chamber needs to be pressurized by air intake. When the sealed chamber needs pressurization, the controller controls a first micro motor to drive a first baffle to rotate to a first target angle to open the exhaust port, a second micro motor to drive a second baffle to rotate to separate the first and second chambers, and a third micro motor to drive a third baffle to rotate to a second target angle to open the air intake port. This ensures that polluted air in the sealed chamber flows into the first chamber through the exhaust port, while clean air in the third chamber enters the sealed chamber, and the amount of clean air entering the sealed chamber exceeds the amount of polluted air discharged. The controller then controls the opening and closing of the baffles and starts a timer to allow the heating mesh to perform high-temperature disinfection and purification of viruses on the primary and high-efficiency filters. Subsequently, when the timer reaches a first preset time, the controller controls the first micro motor to drive the first baffle to rotate to close the exhaust port. The controller controls the second micro motor to drive the second baffle to rotate so that the second baffle does not separate the first and second chambers. Clean air, after being disinfected and purified at high temperature in the first chamber, enters the second and third chambers. The controller keeps the timer running and repeats this disinfection and purification operation after the timer reaches the third preset time. During the disinfection and purification operation, the controller controls the pressure reducing valve and the air intake control valve to open. Compressed air in the compressed air cylinder is depressurized by the pressure reducing valve and then flows into the sealed chamber through the air intake control valve to achieve air intake pressurization until the pressure inside and outside the sealed chamber reaches equilibrium. Then, it is determined whether the current oxygen concentration value is higher than the minimum set oxygen concentration value corresponding to the pressure inside the chamber when the internal and external pressures are balanced. If not, the oxygen replenishment control valve is opened to replenish oxygen in the sealed chamber until the oxygen concentration value inside the sealed chamber reaches at least the minimum set oxygen concentration value. If yes, no oxygen replenishment operation is required. The second target angle is greater than the first target angle.

[0010] Preferably, the system further includes an exhaust pump fixed to the outside of the sealed chamber, the exhaust pump being connected to the sealed chamber via an exhaust pipe, and an exhaust control valve being sequentially installed on the exhaust pipe;

[0011] The controller is used to determine that the internal and external pressure values ​​are inconsistent, and the internal pressure value is greater than the external pressure value, indicating that the sealed chamber needs to be vented and depressurized. When the sealed chamber needs to be vented and depressurized, the controller controls a first micro motor to drive a first baffle to rotate to a second target angle to open the exhaust port, a second micro motor to drive a second baffle to rotate to separate the first and second chambers, and a third micro motor to drive a third baffle to rotate to the first target angle to open the air inlet. This ensures that polluted air in the sealed chamber flows into the first chamber only through the exhaust port, while clean air in the third chamber enters the sealed chamber, and more polluted air is discharged from the sealed chamber than clean air enters. The controller then controls the opening and closing of the baffles and starts a timer to allow the heating mesh to perform high-temperature disinfection and purification of viruses on the primary and high-efficiency filters. Subsequently, when the timer reaches a first preset time, the controller controls the first micro motor to drive the first baffle to rotate to vent the exhaust. The air inlet is closed, and the third micro motor drives the third baffle to rotate, thus closing the air inlet. When the timer reaches the second preset time, the control switch is turned off, the fan is turned on, and the second micro motor drives the second baffle to rotate so that the second baffle does not separate the first and second chambers. Clean air that has been disinfected and purified at high temperature in the first chamber enters the second and third chambers. The timer is set, and this disinfection and purification operation is repeated after the timer reaches the third preset time. During the disinfection and purification operation, the controller controls the exhaust pump and exhaust control valve to open. Using the exhaust pump, the air in the sealed chamber flows through the exhaust control valve to achieve exhaust pressure reduction until the pressure inside and outside the sealed chamber reaches equilibrium. Then, it is determined whether the current oxygen concentration value is higher than the minimum set oxygen concentration value corresponding to the pressure inside the chamber at equilibrium. If not, the oxygen replenishment control valve is opened to replenish oxygen in the sealed chamber until the oxygen concentration value inside the sealed chamber reaches at least the minimum set oxygen concentration value. If yes, no oxygen replenishment operation is required.

[0012] Preferably, the heating mesh is a heating mesh composed of heating resistance wires arranged in a grid.

[0013] This invention also provides a control method for an underwater sealed chamber air disinfection and purification system, characterized in that it utilizes the aforementioned underwater sealed chamber air disinfection and purification system, and the control method includes:

[0014] Step 100: The controller determines whether the internal pressure value and the external pressure value are consistent within a set time period. If they are, proceed to step 200; otherwise, proceed to step 300 if the internal pressure value is less than the external pressure value.

[0015] Step 200: The pressure inside and outside the sealed chamber reaches equilibrium, and pressure needs to be maintained inside the sealed chamber;

[0016] Step 201: The controller controls the first micro motor to drive the first baffle to rotate to the first target angle so that the exhaust port opens; the second micro motor drives the second baffle to rotate so that the second baffle separates the first cavity and the second cavity; the third micro motor drives the third baffle to rotate to the first target angle so that the air inlet opens. Thus, the polluted air in the sealed chamber flows into the first cavity through the exhaust port, and the clean air in the third cavity enters the sealed chamber. The controller controls the opening and closing and starts timing so that the heating net disinfects and purifies the viruses on the primary filter and the high-efficiency filter at high temperature.

[0017] Step 202: When the timer reaches the first preset time, the controller controls the first micro motor to drive the first baffle to rotate so that the exhaust port is closed, and the third micro motor to drive the third baffle to rotate so that the air inlet is closed.

[0018] Step 203: When the timer reaches the second preset time, the controller controls the switch to turn off and the fan to turn on, and controls the second micro motor to drive the second baffle to rotate so that the second baffle does not separate the first cavity and the second cavity. The clean air in the first cavity after high-temperature disinfection and purification enters the second cavity and the third cavity. When the timer reaches the third preset time, steps 201-203 are repeated.

[0019] During the execution of steps 201-203, the controller determines whether the current oxygen concentration value is higher than the minimum set oxygen concentration value corresponding to the pressure inside the chamber when the internal and external pressures are balanced. If not, the oxygen replenishment control valve is opened to replenish oxygen in the sealed chamber until the oxygen concentration value inside the sealed chamber reaches at least the minimum set oxygen concentration value. If yes, no oxygen replenishment operation is required.

[0020] Step 300: The sealed chamber needs to be pressurized with air intake;

[0021] Step 301: The controller controls the first micro motor to drive the first baffle to rotate to the first target angle so that the exhaust port opens; the second micro motor drives the second baffle to rotate so that the second baffle separates the first cavity and the second cavity; the third micro motor drives the third baffle to rotate to the second target angle so that the air inlet opens. This allows the polluted air in the sealed chamber to flow into the first cavity through the exhaust port, while the clean air in the third cavity enters the sealed chamber. Moreover, the amount of clean air entering the sealed chamber is greater than the amount of polluted air discharged from the sealed chamber. The controller controls the opening and closing and starts timing so that the heating net can perform high-temperature disinfection and purification of the viruses on the primary filter and the high-efficiency filter.

[0022] Step 302: When the timing reaches the first preset time, the controller controls the first micro motor to drive the first baffle to rotate so that the exhaust port is closed;

[0023] Step 303: When the timer reaches the second preset time, the controller controls the switch to turn off and the fan to turn on, and controls the second micro motor to drive the second baffle to rotate so that the second baffle does not separate the first cavity and the second cavity. The clean air in the first cavity after high-temperature disinfection and purification enters the second cavity and the third cavity. When the timer reaches the third preset time, steps 301-303 are repeated.

[0024] During the execution of steps 301-303, the controller controls the opening of the pressure reducing valve and the air intake control valve. Compressed air in the compressed air cylinder is depressurized by the pressure reducing valve and then flows into the sealed chamber through the air intake control valve to achieve air intake pressurization until the pressure inside and outside the sealed chamber reaches equilibrium. Then, it is determined whether the current oxygen concentration value is higher than the minimum set oxygen concentration value corresponding to the pressure inside the chamber when the internal and external pressures are balanced. If not, the oxygen replenishment control valve is opened to replenish oxygen in the sealed chamber until the oxygen concentration value inside the sealed chamber reaches at least the minimum set oxygen concentration value. If yes, no oxygen replenishment operation is required; the second target angle is greater than the first target angle.

[0025] Preferably, the system further includes an exhaust pump fixed to the outside of the sealed chamber, the exhaust pump being connected to the sealed chamber via an exhaust pipe, and an exhaust control valve being sequentially installed on the exhaust pipe;

[0026] In step 100, if not and the internal pressure value is greater than the external pressure value, proceed to step 400;

[0027] Step 400: The sealed chamber needs to be vented and depressurized;

[0028] Step 401: The controller controls the first micro motor to drive the first baffle to rotate to the second target angle so that the exhaust port opens; the second micro motor drives the second baffle to rotate so that the second baffle separates the first cavity and the second cavity; the third micro motor drives the third baffle to rotate to the first target angle so that the air inlet opens. This allows the polluted air in the sealed chamber to flow into the first cavity through the exhaust port, while the clean air in the third cavity enters the sealed chamber. Moreover, the polluted air discharged from the sealed chamber is greater than the clean air entering the sealed chamber. The controller controls the opening and closing and starts timing so that the heating net can perform high-temperature disinfection and purification of the viruses on the primary filter and the high-efficiency filter.

[0029] Step 402: When the timer reaches the first preset time, the controller controls the first micro motor to drive the first baffle to rotate so that the exhaust port is closed, and the third micro motor to drive the third baffle to rotate so that the air inlet is closed.

[0030] Step 403: When the timer reaches the second preset time, the controller controls the switch to turn off and the fan to turn on, and controls the second micro motor to drive the second baffle to rotate so that the second baffle does not separate the first cavity and the second cavity. The clean air in the first cavity after high-temperature disinfection and purification enters the second cavity and the third cavity. When the timer reaches the third preset time, steps 401-403 are repeated.

[0031] During steps 401-403, the controller controls the exhaust pump and exhaust control valve to open. Using the exhaust pump, the air inside the sealed chamber flows through the exhaust control valve to achieve exhaust pressure reduction until the pressure inside and outside the sealed chamber reaches equilibrium. Then, it is determined whether the current oxygen concentration value is higher than the minimum set oxygen concentration value corresponding to the pressure inside the chamber at equilibrium. If not, the oxygen replenishment control valve is opened to replenish oxygen in the sealed chamber until the oxygen concentration value inside the sealed chamber reaches at least the minimum set oxygen concentration value. If yes, no oxygen replenishment operation is required.

[0032] Based on common knowledge in the field, the above-mentioned preferred conditions can be combined arbitrarily to obtain various preferred embodiments of the present invention.

[0033] The positive and progressive effects of this invention are as follows: This invention achieves the functions of high-temperature disinfection of polluted air in an underwater sealed chamber under pressure, removing carbon dioxide, odors, and other harmful gas components from the polluted air, providing clean air for the underwater sealed chamber, and supplementing oxygen when needed; it also achieves the functions of high-temperature disinfection of polluted air in an underwater sealed chamber under air intake pressurization, removing carbon dioxide, odors, and other harmful gas components from the polluted air, providing clean air for the underwater sealed chamber, and supplementing oxygen when needed; and it further achieves the functions of high-temperature disinfection of polluted air in an underwater sealed chamber under exhaust decompression, removing carbon dioxide, odors, and other harmful gas components from the polluted air, providing clean air for the underwater sealed chamber, and supplementing oxygen when needed. This invention can provide underwater workers with more comfortable living conditions. Attached Figure Description

[0034] Figure 1 This is a schematic diagram of the disinfection and purification device in this embodiment.

[0035] Figure 2 This is a schematic block diagram of the internal and external components of the sealed chamber in this embodiment.

[0036] Figure 3 This is a control diagram of the underwater enclosed chamber air disinfection and purification system in this embodiment.

[0037] Figure 4This is a schematic diagram of the disinfection and purification device in this embodiment, showing the structure of disinfection and purification while simultaneously discharging polluted air (under pressure).

[0038] Figure 5 This is a schematic diagram of the disinfection and purification of polluted air in the first chamber of the disinfection and purification device in this embodiment (under pressure).

[0039] Figure 6 This is a schematic diagram of the structure of the disinfection and purification device in this embodiment, showing the purified air entering the second chamber from the first chamber (under pressure).

[0040] Figure 7 This is a schematic diagram of the disinfection and purification device in this embodiment, showing the structure of disinfection and purification while simultaneously discharging polluted air (under pressurized air intake).

[0041] Figure 8 This is a schematic diagram of the disinfection and purification of polluted air in the first chamber of the disinfection and purification device in this embodiment (under the air intake pressurization state).

[0042] Figure 9 This is a schematic diagram of the structure of the disinfection and purification device in this embodiment, showing the purified air entering the second chamber from the first chamber (under the air intake pressurization state).

[0043] Figure 10 This is a schematic diagram of the disinfection and purification device in this embodiment, showing the structure of disinfection and purification while simultaneously discharging polluted air (under exhaust pressure reduction).

[0044] Figure 11 This is a schematic diagram of the disinfection and purification of polluted air in the first chamber of the disinfection and purification device in this embodiment (under exhaust pressure reduction state).

[0045] Figure 12 This is a schematic diagram of the structure of the disinfection and purification device in this embodiment, showing the purified air entering the second chamber from the first chamber (under exhaust pressure reduction).

[0046] Figure 13 This is a flowchart of the control method for the underwater enclosed chamber air disinfection and purification system in this embodiment. Detailed Implementation

[0047] 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.

[0048] like Figure 1-12 As shown, this embodiment provides an underwater sealed chamber air disinfection and purification system. The underwater sealed chamber includes a sealed chamber body 30. The system includes a disinfection and purification device fixed inside the sealed chamber body 30. The disinfection and purification device includes a shell 1. A mesh canister 2 is fixed on the right top wall inside the shell 1. The mesh canister 2 is filled with a packaging absorbent containing soda lime and activated carbon. A primary filter 3, a heating mesh 4, and a high-efficiency filter 5 are fixed sequentially on the left side of the mesh canister 2. The heating mesh 4 is a heating mesh composed of heating resistance wires.

[0049] Because the mesh canister 2 is mesh-like, polluted air inside the sealed chamber 30 can pass through it. The mesh canister 2 is filled with a packaging absorbent containing soda lime and activated carbon. The soda lime absorbs carbon dioxide from the polluted air, while the activated carbon absorbs odors and other harmful gases. The filter is located at the rear of the polluted airflow and removes impurities, as well as soda lime and activated carbon fragments carried by the airflow.

[0050] The bottom of the mesh tank 2 is fixed with a transverse partition 6. The right side of the shell 1 is divided into a first cavity 7 and a third cavity 9 by the transverse partition 6, and the left side is a second cavity 8. A fan 10 is fixed on the upper part of the inner wall of the second cavity 8. The fan 10 faces the first cavity 7. An exhaust port 11 is opened at the right end of the shell 1 corresponding to the first cavity 7, and an air inlet 12 is opened corresponding to the third cavity 9. A first micro motor 13, a second micro motor 14, and a third micro motor 15 are fixed at the top right end, top left end, and bottom right end of the transverse partition 6, respectively. A first rotating shaft is fixed on the output shaft of the first micro motor 13, and a first baffle 16 is sleeved and fixed on the first rotating shaft. A second rotating shaft is fixed on the output shaft of the second micro motor 14, and a second baffle 17 is sleeved and fixed on the second rotating shaft. A third rotating shaft is fixed on the output shaft of the third micro motor 15, and a third baffle 18 is sleeved and fixed on the third rotating shaft.

[0051] The system also includes a compressed air cylinder 19, an oxygen supply cylinder 20, an exhaust pump 21, and an external pressure sensor 22 fixed to the outside of the sealed chamber 30, and an internal pressure sensor 23, an oxygen concentration sensor 24, and a controller 25 fixed inside the sealed chamber 30. The compressed air cylinder 19 is connected to the sealed chamber 30 through an air intake pipe, on which a pressure reducing valve 26 and an air intake control valve 27 are sequentially installed. The oxygen supply cylinder 20 is connected to the sealed chamber 30 through an oxygen supply pipe, on which an oxygen supply control valve 28 is installed. The exhaust pump 21 is connected to the sealed chamber 30 through an exhaust pipe, on which an exhaust control valve 29 is sequentially installed.

[0052] The heating grid 4 is electrically connected to the controller 25 via switch 31. The fan 10, the first micro motor 13, the second micro motor 14, the third micro motor 15, the exhaust pump 21, the external pressure sensor 22, the internal pressure sensor 23, the oxygen concentration sensor 24, the pressure reducing valve 26, the intake control valve 27, the oxygen supplementation control valve 28, and the exhaust control valve 29 are all electrically connected to the controller 25.

[0053] In this embodiment, the internal pressure sensor 23 is used to detect the internal pressure value inside the sealed chamber in real time, the external pressure sensor 22 is used to detect the external pressure value outside the sealed chamber in real time, and the oxygen concentration sensor 24 is used to detect the oxygen concentration value inside the sealed chamber in real time.

[0054] The controller 25 is used to determine whether the internal pressure value and the external pressure value are consistent within a set time period (e.g., 30 seconds). If they are consistent, the internal and external pressures reach equilibrium, and the sealed chamber 30 needs to be pressurized. When the sealed chamber 30 needs to be pressurized, the controller 25 is used to control the first micro motor 13 to drive the first baffle 16 to rotate to a first target angle (e.g., from a vertical position to a 60° angle) so that the exhaust port 11 opens; the second micro motor 14 to drive the second baffle 17 to rotate to a vertical position so that the second baffle 17 separates the first cavity 7 and the second cavity 8; and the third micro motor 15 to drive the third baffle 18 to rotate to the first target angle (e.g., from a vertical position to a 60° angle) so that the air inlet 12 opens (see...). Figure 4 This allows polluted air inside the sealed chamber 30 to flow into the first chamber 7 through the exhaust port 11, but not into the second chamber 8. Clean air from the third chamber 9 enters the sealed chamber 30. The controller 25 controls the switch 31 to close and starts timing, causing the heating mesh 4 to perform high-temperature disinfection and purification of the viruses on the primary filter 3 and the high-efficiency filter 5. The controller 25 sets the time for the first preset time (e.g., 1 minute). This operation allows polluted air inside the sealed chamber 30 to be discharged into the first chamber 7 while undergoing high-temperature disinfection and purification. Since the opening degree of the first baffle 16 is the same as the opening degree of the third baffle 18, the clean air entering the sealed chamber 30 from the third chamber 9 is equal to the polluted air discharged from the sealed chamber 30 into the first chamber 7. Since the initial state has relatively little air in the first chamber 7 and a lot of air in the third chamber 9, after both the exhaust port 11 and the air inlet 12 are opened, polluted air from the sealed chamber 30 will enter the first chamber 7, and clean air from the third chamber 9 will enter the sealed chamber 30. Subsequently, when the timer reaches the first preset time (e.g., 1 minute), the controller 25 controls the first micro motor 13 to drive the first baffle 16 to rotate (in a vertical position) to close the exhaust port 11, and the third micro motor 15 to drive the third baffle 18 to rotate (in a vertical position) to close the air inlet 12 (see...). Figure 5When the controller 25 times out to the second preset time (e.g., 30 seconds), this operation causes the first cavity 7 to form a sealed cavity, allowing for high-temperature disinfection and purification of the contaminated air within the first cavity 7. Neither clean air from the third cavity 9 is introduced into the sealed chamber 30, nor is contaminated air discharged into the first cavity 7. Subsequently, when the controller 25 times out to the second preset time (e.g., 30 seconds), the control switch 31 is disconnected, the fan 10 is turned on, and the second micro motor 14 drives the second baffle 17 to rotate horizontally so that the second baffle 17 does not separate the first cavity 7 from the second cavity 8. The clean air from the first cavity 7, after high-temperature disinfection and purification, then enters the second cavity 8 and the third cavity 9 (see...). Figure 6 The timer is set to the third preset time (e.g., 20 seconds). During this time, neither clean air is introduced into the third chamber 9 nor polluted air is discharged from the sealed chamber 30. Once the timer reaches the third preset time (e.g., 20 seconds) in the first chamber 7, this disinfection and purification operation is repeated.

[0055] During the disinfection and purification operation corresponding to the pressure holding, the controller 25 determines whether the current oxygen concentration value is higher than the minimum set oxygen concentration value corresponding to the pressure inside the chamber when the internal and external pressures are balanced. If not, the oxygen replenishment control valve 28 is opened to replenish oxygen in the sealed chamber 30 until the oxygen concentration value inside the sealed chamber 30 reaches at least the minimum set oxygen concentration value. If yes, no oxygen replenishment operation is required.

[0056] The controller 25 is used to determine that the internal pressure value and the external pressure value are inconsistent, and the internal pressure value is less than the external pressure value, thus requiring air intake and pressurization within the sealed chamber 30. When air intake and pressurization are required within the sealed chamber 30, the controller 25 controls the first micro motor 13 to drive the first baffle 16 to rotate to a first target angle (e.g., from a vertical position to a 60° angle) to open the exhaust port 11; the second micro motor 14 to drive the second baffle 17 to rotate to a vertical position to separate the first cavity 7 and the second cavity 8; and the third micro motor 15 to drive the third baffle 18 to rotate to a second target angle (e.g., from a vertical position to a 90° angle, or a horizontal position) to fully open the air intake port 12 (see...). Figure 7This allows polluted air in the sealed chamber 30 to flow into the first chamber 7 through the exhaust port 11, without flowing into the second chamber 8. Clean air in the third chamber 9 enters the sealed chamber 30, and the amount of clean air entering the sealed chamber 30 from the third chamber 9 exceeds the amount of polluted air discharged from the sealed chamber 30 to the first chamber 7. The controller 25 controls the switch 31 to close and starts timing, causing the heating grid 4 to perform high-temperature disinfection and purification of the viruses on the primary filter 3 and the high-efficiency filter 5. The controller 25 sets the timer for the first preset time (e.g., 1 minute). This operation allows polluted air in the sealed chamber 30 to be discharged into the first chamber 7 while undergoing high-temperature disinfection and purification. Since the opening degree of the first baffle 16 is smaller than that of the third baffle 18, the amount of clean air entering the sealed chamber 30 from the third chamber 9 exceeds the amount of polluted air discharged from the sealed chamber 30 to the first chamber 7. When the timer reaches the first preset time (e.g., 1 minute), the controller 25 controls the first micro motor 13 to drive the first baffle 16 to rotate into a vertical position so that the exhaust port 11 is closed (see...). Figure 8 The timer is set to a second preset time (e.g., 30 seconds). This operation causes the first cavity 7 to form a sealed cavity, where the polluted air inside the first cavity 7 is disinfected and purified at high temperature. No polluted air is discharged from the sealed chamber 30 into the first cavity 7. However, since the air inlet 12 is open, clean air from the third cavity 9 is introduced into the sealed chamber 30. Subsequently, when the timer reaches the second preset time (e.g., 30 seconds), the controller 25 controls the switch 31 to disconnect, the fan 10 to start, and controls the second micro motor 14 to drive the second baffle 17 to rotate so that the second baffle 17 does not separate the first cavity 7 and the second cavity 8. The clean air disinfected and purified at high temperature in the first cavity 7 enters the second cavity 8 and the third cavity 9 (see...). Figure 9 The timer is set for the third preset time (e.g., 20 seconds). During this time, no contaminated air is discharged from the sealed chamber 30 into the first chamber 7. However, since the air inlet 12 is open, clean air from the third chamber 9 is introduced into the sealed chamber 30. After the timer reaches the third preset time (e.g., 20 seconds), this disinfection and purification operation is repeated.

[0057] During the disinfection and purification operation corresponding to the air intake pressurization, the controller 25 controls the opening of the pressure reducing valve 26 and the air intake control valve 27. The compressed air in the compressed air cylinder 19 is depressurized by the pressure reducing valve 26 and then flows into the sealed chamber 30 through the air intake control valve 27 to achieve air intake pressurization until the pressure inside and outside the sealed chamber 30 reaches equilibrium. Then the controller 25 determines whether the current oxygen concentration value is higher than the minimum set oxygen concentration value corresponding to the pressure inside the chamber when the internal and external pressures are balanced. If not, the oxygen replenishment control valve 28 is opened to replenish oxygen in the sealed chamber 30 until the oxygen concentration value inside the sealed chamber 30 reaches at least the minimum set oxygen concentration value. If yes, no oxygen replenishment operation is required.

[0058] The controller 25 is used to determine that the internal pressure value and the external pressure value are inconsistent, and the internal pressure value is greater than the external pressure value, so that the sealed chamber 30 needs to be vented to reduce pressure. When the sealed chamber 30 needs to be vented to reduce pressure, the controller 25 is used to control the first micro motor 13 to drive the first baffle 16 to rotate to the second target angle (from vertical to 90° angle, to a horizontal state) so that the exhaust port 11 is fully opened; the second micro motor 14 to drive the second baffle 17 to rotate to a vertical state so that the second baffle 17 separates the first cavity 7 and the second cavity 8; and the third micro motor 15 to drive the third baffle 18 to rotate to the first target angle (e.g., from vertical to 60° angle) so that the air inlet 12 is opened (see...). Figure 10 This allows polluted air inside the sealed chamber 30 to flow into the first chamber 7 through the exhaust port 11 without entering the second chamber 8. Clean air from the third chamber 9 enters the sealed chamber 30, and more polluted air from the sealed chamber 30 is discharged into the first chamber 7 than clean air enters the sealed chamber 30 from the third chamber 9. The controller 25 controls the switch 31 to close and starts timing, causing the heating grid 4 to perform high-temperature disinfection and purification of viruses on the primary filter 3 and the high-efficiency filter 5. The controller 25 sets a first preset time (e.g., 1 minute). This operation allows polluted air inside the sealed chamber 30 to be discharged into the first chamber 7 while undergoing high-temperature disinfection and purification. Since the opening degree of the first baffle 16 is greater than that of the third baffle 18, more polluted air from the sealed chamber 30 is discharged into the first chamber 7 than clean air enters the sealed chamber 30 from the third chamber 9. When the timer reaches a first preset time (e.g., 1 minute), the controller 25 controls the first micro motor 13 to drive the first baffle 16 to rotate so that the exhaust port 11 is closed, and the third micro motor 15 to drive the third baffle 18 to rotate so that the air inlet 12 is closed. Figure 11 The timer is set to a second preset time (e.g., 30 seconds). This operation causes the first cavity 7 to form a sealed cavity, where the polluted air inside the first cavity 7 is disinfected and purified at high temperature. Neither clean air from the third cavity 9 is introduced into the sealed chamber 30, nor is polluted air discharged into the first cavity 7. Subsequently, when the timer reaches the second preset time (e.g., 30 seconds), the controller 25 controls the switch 31 to open, the fan 10 to start, and controls the second micro motor 14 to drive the second baffle 17 to rotate so that the second baffle 17 does not separate the first cavity 7 and the second cavity 8. The clean air from the first cavity 7, after high-temperature disinfection and purification, enters the second cavity 8 and the third cavity 9 (see...). Figure 12 The timer is set for the third preset time (e.g., 20 seconds). During this time, the sealed chamber 30 neither discharges contaminated air into the first chamber 7 nor introduces clean air into the third chamber 9. After the timer reaches the third preset time (e.g., 20 seconds), this disinfection and purification operation is repeated.

[0059] During the disinfection and purification operation corresponding to exhaust pressure reduction, the controller 25 controls the exhaust pump 21 and exhaust control valve 29 to open. Using the exhaust pump 21, the air in the sealed chamber 30 flows through the exhaust control valve 29 to achieve exhaust pressure reduction until the pressure inside and outside the sealed chamber 30 reaches equilibrium. Then, the controller 25 determines whether the current oxygen concentration value is higher than the minimum set oxygen concentration value corresponding to the pressure inside the chamber at equilibrium. If not, the oxygen replenishment control valve 28 is opened to replenish oxygen in the sealed chamber 30 until the oxygen concentration value inside the sealed chamber 30 reaches at least the minimum set oxygen concentration value. If yes, no oxygen replenishment operation is required.

[0060] like Figure 13 As shown, this embodiment also provides a control method for an underwater sealed chamber air disinfection and purification system, which utilizes the aforementioned underwater sealed chamber air disinfection and purification system. The control method includes:

[0061] Step 100: The controller determines whether the internal pressure value and the external pressure value are consistent within a set time period. If yes, proceed to step 200; if no, and the internal pressure value is less than the external pressure value, proceed to step 300; if no, and the internal pressure value is greater than the external pressure value, proceed to step 400.

[0062] Step 200: The pressure inside and outside the sealed chamber reaches equilibrium, and pressure needs to be maintained inside the sealed chamber;

[0063] Step 201: The controller controls the first micro motor to drive the first baffle to rotate to the first target angle so that the exhaust port opens; the second micro motor drives the second baffle to rotate so that the second baffle separates the first cavity and the second cavity; the third micro motor drives the third baffle to rotate to the first target angle so that the air inlet opens. Thus, the polluted air in the sealed chamber flows into the first cavity through the exhaust port, and the clean air in the third cavity enters the sealed chamber. The controller controls the opening and closing and starts timing so that the heating net disinfects and purifies the viruses on the primary filter and the high-efficiency filter at high temperature.

[0064] Step 202: When the timer reaches the first preset time, the controller controls the first micro motor to drive the first baffle to rotate so that the exhaust port is closed, and the third micro motor to drive the third baffle to rotate so that the air inlet is closed.

[0065] Step 203: When the timer reaches the second preset time, the controller controls the switch to turn off and the fan to turn on, and controls the second micro motor to drive the second baffle to rotate so that the second baffle does not separate the first cavity and the second cavity. The clean air in the first cavity after high-temperature disinfection and purification enters the second cavity and the third cavity. When the timer reaches the third preset time, steps 201-203 are repeated.

[0066] During the execution of steps 201-203, the controller determines whether the current oxygen concentration value is higher than the minimum set oxygen concentration value corresponding to the pressure inside the chamber when the internal and external pressures are balanced. If not, the oxygen replenishment control valve is opened to replenish oxygen in the sealed chamber until the oxygen concentration value inside the sealed chamber reaches at least the minimum set oxygen concentration value. If yes, no oxygen replenishment operation is required.

[0067] Step 300: The sealed chamber needs to be pressurized with air intake;

[0068] Step 301: The controller controls the first micro motor to drive the first baffle to rotate to the first target angle so that the exhaust port opens; the second micro motor drives the second baffle to rotate so that the second baffle separates the first cavity and the second cavity; the third micro motor drives the third baffle to rotate to the second target angle so that the air inlet opens. This allows the polluted air in the sealed chamber to flow into the first cavity through the exhaust port, while the clean air in the third cavity enters the sealed chamber. Moreover, the amount of clean air entering the sealed chamber is greater than the amount of polluted air discharged from the sealed chamber. The controller controls the opening and closing and starts timing so that the heating net can perform high-temperature disinfection and purification of the viruses on the primary filter and the high-efficiency filter.

[0069] Step 302: When the timing reaches the first preset time, the controller controls the first micro motor to drive the first baffle to rotate so that the exhaust port is closed;

[0070] Step 303: When the timer reaches the second preset time, the controller controls the switch to turn off and the fan to turn on, and controls the second micro motor to drive the second baffle to rotate so that the second baffle does not separate the first cavity and the second cavity. The clean air in the first cavity after high-temperature disinfection and purification enters the second cavity and the third cavity. When the timer reaches the third preset time, steps 301-303 are repeated.

[0071] During the execution of steps 301-303, the controller controls the opening of the pressure reducing valve and the air intake control valve. Compressed air in the compressed air cylinder is depressurized by the pressure reducing valve and then flows into the sealed chamber through the air intake control valve to achieve air intake pressurization until the pressure inside and outside the sealed chamber reaches equilibrium. Then, it is determined whether the current oxygen concentration value is higher than the minimum set oxygen concentration value corresponding to the pressure inside the chamber when the internal and external pressures are balanced. If not, the oxygen replenishment control valve is opened to replenish oxygen in the sealed chamber until the oxygen concentration value inside the sealed chamber reaches at least the minimum set oxygen concentration value. If yes, no oxygen replenishment operation is required; the second target angle is greater than the first target angle.

[0072] Step 400: The sealed chamber needs to be vented and depressurized;

[0073] Step 401: The controller controls the first micro motor to drive the first baffle to rotate to the second target angle so that the exhaust port opens; the second micro motor drives the second baffle to rotate so that the second baffle separates the first cavity and the second cavity; the third micro motor drives the third baffle to rotate to the first target angle so that the air inlet opens. This allows the polluted air in the sealed chamber to flow into the first cavity through the exhaust port, while the clean air in the third cavity enters the sealed chamber. Moreover, the polluted air discharged from the sealed chamber is greater than the clean air entering the sealed chamber. The controller controls the opening and closing and starts timing so that the heating net can perform high-temperature disinfection and purification of the viruses on the primary filter and the high-efficiency filter.

[0074] Step 402: When the timer reaches the first preset time, the controller controls the first micro motor to drive the first baffle to rotate so that the exhaust port is closed, and the third micro motor to drive the third baffle to rotate so that the air inlet is closed.

[0075] Step 403: When the timer reaches the second preset time, the controller controls the switch to turn off and the fan to turn on, and controls the second micro motor to drive the second baffle to rotate so that the second baffle does not separate the first cavity and the second cavity. The clean air in the first cavity after high-temperature disinfection and purification enters the second cavity and the third cavity. When the timer reaches the third preset time, steps 401-403 are repeated.

[0076] During steps 401-403, the controller controls the exhaust pump and exhaust control valve to open. Using the exhaust pump, the air inside the sealed chamber flows through the exhaust control valve to achieve exhaust pressure reduction until the pressure inside and outside the sealed chamber reaches equilibrium. Then, it is determined whether the current oxygen concentration value is higher than the minimum set oxygen concentration value corresponding to the pressure inside the chamber at equilibrium. If not, the oxygen replenishment control valve is opened to replenish oxygen in the sealed chamber until the oxygen concentration value inside the sealed chamber reaches at least the minimum set oxygen concentration value. If yes, no oxygen replenishment operation is required.

[0077] While specific embodiments of the present invention have been described above, those skilled in the art should understand that these are merely illustrative examples, and the scope of protection of the present invention is defined by the appended claims. Those skilled in the art can make various changes or modifications to these embodiments without departing from the principles and essence of the present invention, but all such changes and modifications fall within the scope of protection of the present invention.

Claims

1. An air disinfection and purification system for a closed cabin under water, said closed cabin under water comprising a closed cabin body, characterized in that, The system includes a disinfection and purification device fixed within a sealed chamber. The device comprises a housing, inside which a mesh can is fixed to the right top wall. The mesh can is filled with a packaging absorbent containing soda lime and activated carbon. A transverse partition is fixed to the bottom of the mesh can. The transverse partition divides the space inside the housing into a first chamber and a third chamber on the right side, and a second chamber on the left side. A fan is fixed to the upper part of the inner wall of the second chamber, facing the first chamber. An exhaust port is located at the right end of the housing, corresponding to the first chamber, and an exhaust port is located at the right end, corresponding to the third chamber. At the air inlet, a first micro motor, a second micro motor, and a third micro motor are fixed to the top right end, top left end, and bottom right end of the transverse partition, respectively. A first rotating shaft is fixed to the output shaft of the first micro motor, and a first baffle is sleeved and fixed on the first rotating shaft. A second rotating shaft is fixed to the output shaft of the second micro motor, and a second baffle is sleeved and fixed on the second rotating shaft. A third rotating shaft is fixed to the output shaft of the third micro motor, and a third baffle is sleeved and fixed on the third rotating shaft. A primary filter, a heating mesh, and a high-efficiency filter are sequentially fixed to the left side of the mesh can. The system also includes a compressed air cylinder, an oxygen supply cylinder, and an external pressure sensor fixed to the outside of the sealed chamber, as well as an internal pressure sensor, an oxygen concentration sensor, and a controller fixed inside the sealed chamber. The compressed air cylinder is connected to the sealed chamber through an air intake pipe, and a pressure reducing valve and an air intake control valve are sequentially installed on the air intake pipe. The oxygen supply cylinder is connected to the sealed chamber through an oxygen supply pipe, and an oxygen supply control valve is installed on the oxygen supply pipe. The heating grid is electrically connected to the controller via a switch. The internal pressure sensor is used to detect the internal pressure value inside the sealed chamber in real time, the external pressure sensor is used to detect the external pressure value outside the sealed chamber in real time, and the oxygen concentration sensor is used to detect the oxygen concentration value inside the sealed chamber in real time. The controller is used to determine whether the internal pressure value and the external pressure value are consistent within a set time period. If they are consistent, the internal and external pressures reach equilibrium, and the sealed chamber needs to be pressurized. When the sealed chamber needs to be pressurized, the controller controls the first micro motor to drive the first baffle to rotate to a first target angle to open the exhaust port, the second micro motor to drive the second baffle to rotate to separate the first chamber and the second chamber, and the third micro motor to drive the third baffle to rotate to the first target angle to open the air inlet. This allows polluted air in the sealed chamber to flow into the first chamber through the exhaust port, while clean air in the third chamber enters the sealed chamber. The controller controls the opening and closing of the baffle and starts timing so that the heating mesh can perform high-temperature disinfection and purification of viruses on the primary filter and the high-efficiency filter. Then, when the timing reaches the first preset time, the controller controls the first... A micro motor drives the first baffle to rotate, closing the exhaust port; a third micro motor drives the third baffle to rotate, closing the air inlet. When the timer reaches the second preset time, the control switch is turned off, the fan is turned on, and the second micro motor drives the second baffle to rotate, preventing the second baffle from separating the first and second chambers. Clean air, purified by high-temperature disinfection in the first chamber, enters the second and third chambers. The timer is maintained, and this disinfection and purification operation is repeated after the timer reaches the third preset time. During the disinfection and purification operation, the controller determines whether the current oxygen concentration is higher than the minimum set oxygen concentration corresponding to the pressure inside the chamber when the internal and external pressures are balanced. If not, the oxygen replenishment control valve is opened to replenish oxygen in the sealed chamber until the oxygen concentration inside the sealed chamber reaches at least the minimum set oxygen concentration. If yes, no oxygen replenishment is required. The controller is used to determine that the internal and external pressure values ​​are inconsistent, and the internal pressure value is less than the external pressure value, indicating that the sealed chamber needs to be pressurized by air intake. When the sealed chamber needs pressurization, the controller controls a first micro motor to drive a first baffle to rotate to a first target angle to open the exhaust port, a second micro motor to drive a second baffle to rotate to separate the first and second chambers, and a third micro motor to drive a third baffle to rotate to a second target angle to open the air intake port. This ensures that polluted air in the sealed chamber flows into the first chamber only through the exhaust port, clean air in the third chamber enters the sealed chamber, and more clean air enters the sealed chamber than polluted air is discharged. The controller then controls the opening and closing of the baffles and starts a timer to allow the heating mesh to perform high-temperature disinfection and purification of viruses on the primary and high-efficiency filters. Subsequently, when the timer reaches a first preset time, the controller controls the first micro motor to drive the first baffle to rotate. This allows the exhaust port to close, and when the timer reaches the second preset time, the control switch is turned off and the fan is turned on. The second micro motor is controlled to drive the second baffle to rotate so that the second baffle does not separate the first chamber and the second chamber. The clean air in the first chamber, which has been disinfected and purified at high temperature, enters the second chamber and the third chamber. The timer is set, and this disinfection and purification operation is repeated after the timer reaches the third preset time. During the disinfection and purification operation, the controller controls the pressure reducing valve and the air intake control valve to open. The compressed air in the compressed air cylinder is depressurized by the pressure reducing valve and then flows into the sealed chamber through the air intake control valve to achieve air intake pressurization until the pressure inside and outside the sealed chamber reaches equilibrium. Then, it is determined whether the current oxygen concentration value is higher than the minimum set oxygen concentration value corresponding to the pressure inside the chamber when the internal and external pressures are balanced. If not, the oxygen replenishment control valve is opened to replenish oxygen in the sealed chamber until the oxygen concentration value inside the sealed chamber reaches at least the minimum set oxygen concentration value. If yes, no oxygen replenishment operation is required. The angle of the second target is greater than the angle of the first target.

2. The air disinfection and purification system for a closed underwater chamber according to claim 1, characterized in that, The system also includes an exhaust pump fixed to the outside of the sealed chamber, the exhaust pump being connected to the sealed chamber via an exhaust pipe, and an exhaust control valve being sequentially installed on the exhaust pipe. The controller is used to determine that the internal and external pressure values ​​are inconsistent, and the internal pressure value is greater than the external pressure value, indicating that the sealed chamber needs to be vented and depressurized. When the sealed chamber needs to be vented and depressurized, the controller controls a first micro motor to drive a first baffle to rotate to a second target angle to open the exhaust port, a second micro motor to drive a second baffle to rotate to separate the first and second chambers, and a third micro motor to drive a third baffle to rotate to the first target angle to open the air inlet. This ensures that polluted air in the sealed chamber flows into the first chamber only through the exhaust port, while clean air in the third chamber enters the sealed chamber, and more polluted air is discharged from the sealed chamber than clean air enters. The controller then controls the opening and closing of the baffles and starts a timer to allow the heating mesh to perform high-temperature disinfection and purification of viruses on the primary and high-efficiency filters. Subsequently, when the timer reaches a first preset time, the controller controls the first micro motor to drive the first baffle to rotate to vent the exhaust. The air inlet is closed, and the third micro motor drives the third baffle to rotate, thus closing the air inlet. When the timer reaches the second preset time, the control switch is turned off, the fan is turned on, and the second micro motor drives the second baffle to rotate so that the second baffle does not separate the first and second chambers. Clean air that has been disinfected and purified at high temperature in the first chamber enters the second and third chambers. The timer is set, and this disinfection and purification operation is repeated after the timer reaches the third preset time. During the disinfection and purification operation, the controller controls the exhaust pump and exhaust control valve to open. Using the exhaust pump, the air in the sealed chamber flows through the exhaust control valve to achieve exhaust pressure reduction until the pressure inside and outside the sealed chamber reaches equilibrium. Then, it is determined whether the current oxygen concentration value is higher than the minimum set oxygen concentration value corresponding to the pressure inside the chamber at equilibrium. If not, the oxygen replenishment control valve is opened to replenish oxygen in the sealed chamber until the oxygen concentration value inside the sealed chamber reaches at least the minimum set oxygen concentration value. If yes, no oxygen replenishment operation is required.

3. The air disinfection and purification system for a closed underwater chamber according to claim 1, characterized in that, The heating mesh is a heating mesh composed of heating resistance wires arranged in a grid.

4. A control method for an underwater sealed chamber air disinfection and purification system, characterized in that, It utilizes the underwater sealed chamber air disinfection and purification system as described in claim 1, and the control method includes: Step 100: The controller determines whether the internal pressure value and the external pressure value are consistent within a set time period. If they are, proceed to step 200; otherwise, proceed to step 300 if the internal pressure value is less than the external pressure value. Step 200: The pressure inside and outside the sealed chamber reaches equilibrium, and pressure needs to be maintained inside the sealed chamber; Step 201: The controller controls the first micro motor to drive the first baffle to rotate to the first target angle so that the exhaust port opens; the second micro motor drives the second baffle to rotate so that the second baffle separates the first cavity and the second cavity; the third micro motor drives the third baffle to rotate to the first target angle so that the air inlet opens. Thus, the polluted air in the sealed chamber flows into the first cavity through the exhaust port, and the clean air in the third cavity enters the sealed chamber. The controller controls the opening and closing and starts timing so that the heating net disinfects and purifies the viruses on the primary filter and the high-efficiency filter at high temperature. Step 202: When the timer reaches the first preset time, the controller controls the first micro motor to drive the first baffle to rotate so that the exhaust port is closed, and the third micro motor to drive the third baffle to rotate so that the air inlet is closed. Step 203: When the timer reaches the second preset time, the controller controls the switch to turn off and the fan to turn on, and controls the second micro motor to drive the second baffle to rotate so that the second baffle does not separate the first cavity and the second cavity. The clean air in the first cavity after high-temperature disinfection and purification enters the second cavity and the third cavity. When the timer reaches the third preset time, steps 201-203 are repeated. During the execution of steps 201-203, the controller determines whether the current oxygen concentration value is higher than the minimum set oxygen concentration value corresponding to the pressure inside the chamber when the internal and external pressures are balanced. If not, the oxygen replenishment control valve is opened to replenish oxygen in the sealed chamber until the oxygen concentration value inside the sealed chamber reaches at least the minimum set oxygen concentration value. If yes, no oxygen replenishment operation is required. Step 300: The sealed chamber needs to be pressurized with air intake; Step 301: The controller controls the first micro motor to drive the first baffle to rotate to the first target angle so that the exhaust port opens; the second micro motor drives the second baffle to rotate so that the second baffle separates the first cavity and the second cavity; the third micro motor drives the third baffle to rotate to the second target angle so that the air inlet opens. This allows the polluted air in the sealed chamber to flow into the first cavity through the exhaust port, while the clean air in the third cavity enters the sealed chamber. Moreover, the amount of clean air entering the sealed chamber is greater than the amount of polluted air discharged from the sealed chamber. The controller controls the opening and closing and starts timing so that the heating net can perform high-temperature disinfection and purification of the viruses on the primary filter and the high-efficiency filter. Step 302: When the timing reaches the first preset time, the controller controls the first micro motor to drive the first baffle to rotate so that the exhaust port is closed; Step 303: When the timer reaches the second preset time, the controller controls the switch to turn off and the fan to turn on, and controls the second micro motor to drive the second baffle to rotate so that the second baffle does not separate the first cavity and the second cavity. The clean air in the first cavity after high-temperature disinfection and purification enters the second cavity and the third cavity. When the timer reaches the third preset time, steps 301-303 are repeated. During the execution of steps 301-303, the controller controls the opening of the pressure reducing valve and the air intake control valve. Compressed air in the compressed air cylinder is depressurized by the pressure reducing valve and then flows into the sealed chamber through the air intake control valve to achieve air intake pressurization until the pressure inside and outside the sealed chamber reaches equilibrium. Then, it is determined whether the current oxygen concentration value is higher than the minimum set oxygen concentration value corresponding to the pressure inside the chamber when the internal and external pressures are balanced. If not, the oxygen replenishment control valve is opened to replenish oxygen in the sealed chamber until the oxygen concentration value inside the sealed chamber reaches at least the minimum set oxygen concentration value. If yes, no oxygen replenishment operation is required; the second target angle is greater than the first target angle.

5. The control method for the underwater sealed chamber air disinfection and purification system as described in claim 4, characterized in that, The system also includes an exhaust pump fixed to the outside of the sealed chamber, the exhaust pump being connected to the sealed chamber via an exhaust pipe, and an exhaust control valve being sequentially installed on the exhaust pipe. In step 100, if not and the internal pressure value is greater than the external pressure value, proceed to step 400; Step 400: The sealed chamber needs to be vented and depressurized; Step 401: The controller controls the first micro motor to drive the first baffle to rotate to the second target angle so that the exhaust port opens; the second micro motor drives the second baffle to rotate so that the second baffle separates the first cavity and the second cavity; the third micro motor drives the third baffle to rotate to the first target angle so that the air inlet opens. This allows the polluted air in the sealed chamber to flow into the first cavity through the exhaust port, while the clean air in the third cavity enters the sealed chamber. Moreover, the polluted air discharged from the sealed chamber is greater than the clean air entering the sealed chamber. The controller controls the opening and closing and starts timing so that the heating net can perform high-temperature disinfection and purification of the viruses on the primary filter and the high-efficiency filter. Step 402: When the timer reaches the first preset time, the controller controls the first micro motor to drive the first baffle to rotate so that the exhaust port is closed, and the third micro motor to drive the third baffle to rotate so that the air inlet is closed. Step 403: When the timer reaches the second preset time, the controller controls the switch to turn off and the fan to turn on, and controls the second micro motor to drive the second baffle to rotate so that the second baffle does not separate the first cavity and the second cavity. The clean air in the first cavity after high-temperature disinfection and purification enters the second cavity and the third cavity. When the timer reaches the third preset time, steps 401-403 are repeated. During steps 401-403, the controller controls the exhaust pump and exhaust control valve to open. Using the exhaust pump, the air inside the sealed chamber flows through the exhaust control valve to achieve exhaust pressure reduction until the pressure inside and outside the sealed chamber reaches equilibrium. Then, it is determined whether the current oxygen concentration value is higher than the minimum set oxygen concentration value corresponding to the pressure inside the chamber at equilibrium. If not, the oxygen replenishment control valve is opened to replenish oxygen in the sealed chamber until the oxygen concentration value inside the sealed chamber reaches at least the minimum set oxygen concentration value. If yes, no oxygen replenishment operation is required.

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