A hyperbaric oxygen chamber system with adjustable oxygen concentration

Abstract

This invention relates to a hyperbaric oxygen chamber system with adjustable oxygen concentration. The system includes a main unit and a chamber. The main unit comprises a main control module, an oxygen regulation module, and a pressure regulation module, all electrically connected to the main control module. The pressure regulation module includes a low-oxygen air regulation submodule and a pressure-maintaining air submodule. The pressure-maintaining air submodule includes a first air compressor, a pressure relief valve, and a first sensor. The oxygen regulation module includes a second air compressor, a separation valve, a molecular sieve tower, a flow-limiting valve, and a vacuum pump. The low-oxygen air regulation submodule includes a three-way valve and a one-way valve. This invention's adjustable oxygen concentration hyperbaric oxygen chamber system can reduce the production cost of hyperbaric oxygen chamber systems, improve the user experience, and allow the oxygen concentration within the chamber to be adjusted below that of air, thus expanding its application to low-oxygen training and testing environments.

Description

Technical Field

[0001] This invention relates to the field of hyperbaric oxygen chamber technology, and in particular to a hyperbaric oxygen chamber system with adjustable oxygen concentration. Background Technology

[0002] In order to ensure the safety and health of users, the oxygen concentration in a hyperbaric oxygen chamber that uses PSA (Pressure Swing Adsorption) to generate oxygen needs to be limited to a certain level.

[0003] In related technologies, while keeping the oxygen supply in the hyperbaric oxygen chamber constant, the main methods to limit excessively high oxygen concentrations are to reduce the oxygen supply or increase the air supply. However, reducing the oxygen supply affects the experience of the users inside the chamber; while increasing the air supply rapidly increases costs, and the added air generates additional noise, while also failing to adjust the oxygen concentration in the chamber's gas to be lower than the oxygen concentration in the air. Summary of the Invention

[0004] Therefore, it is necessary to address the shortcomings of existing methods for limiting excessively high oxygen concentrations in hyperbaric oxygen chambers by providing a hyperbaric oxygen chamber system with adjustable oxygen concentration.

[0005] A hyperbaric oxygen chamber system with adjustable oxygen concentration includes a main unit and a chamber body. The main unit includes a main control module, an oxygen regulation module, and a pressure regulation module. The pressure regulation module includes a low-oxygen air regulation submodule and a pressure-maintaining air submodule. The chamber body, the oxygen regulation module, and the pressure regulation module are electrically connected to the main control module. The pressure-holding air submodule includes a first air compressor, a pressure relief valve, and a first sensor. The first air compressor is connected to the cabin via a pipe and is used to inject compressed air into the cabin to inflate and pressurize it. The pressure relief valve is connected to the cabin via a pipe and is used to release gas from the cabin when the internal pressure exceeds a set pressure to maintain a stable internal pressure, and to discharge gas from the cabin after operation to ensure consistent pressure inside and outside the cabin. The first pressure sensor is connected to the cabin via a pipe and is used to detect the internal air pressure and provide a pressure detection signal to the main control module for control of the internal air pressure. The oxygen regulation module includes a second air compressor, a separation valve, a molecular sieve tower, a flow limiting valve, and a vacuum pump. The outlet of the second air compressor is connected to the inlet of the separation valve. The bidirectional vent of the separation valve is connected to the inlet of the molecular sieve tower. The exhaust port of the separation valve is connected to the low-oxygen air regulation submodule. The outlet of the molecular sieve tower is connected to the inlet of the flow limiting valve. The outlet of the flow limiting valve is connected to the inlet of the vacuum pump. The outlet of the vacuum pump is connected to the chamber via a pipe. The second air compressor is used to inject compressed air into the molecular sieve tower through the separation valve. The molecular sieve tower is used to perform high-pressure adsorption of oxygen in the air and inject the air containing a high concentration of oxygen into the chamber through the flow limiting valve and the vacuum pump. The low-oxygen air conditioning submodule includes a three-way valve and a one-way valve. The three-way valve includes an inlet, a first outlet, and a second outlet. The three-way valve is connected to the separation valve and the one-way valve through its own inlet and second outlet, respectively. The one-way valve is connected to the cabin through a pipe. The separation valve is used to inject air containing low concentration of oxygen generated by the molecular sieve tower through the exhaust port of the separation valve into the inlet of the three-way valve. The three-way valve is used to inject air containing low concentration of oxygen into the atmosphere and the cabin through the first outlet and the second outlet, respectively, thereby regulating the oxygen concentration in the cabin.

[0006] When the aforementioned hyperbaric oxygen chamber system with adjustable oxygen concentration is in operation, the main unit's pressure regulation module continuously injects compressed air into the chamber via the first air compressor, maintaining a high pressure and high air freshness inside the chamber. Simultaneously, the main unit's oxygen regulation module continuously injects compressed air into the molecular sieve tower via the separation valve through the second air compressor, ensuring a continuous supply of high-concentration oxygen air into the chamber. Simultaneously, the separation valve injects low-concentration oxygen air generated by the molecular sieve tower through the inlet of a three-way valve. The three-way valve further injects low-concentration oxygen air into the atmosphere and a check valve through the first and second outlets, respectively. The check valve then injects low-concentration oxygen air into the chamber. Because the pressure regulation module is electrically connected to the main control module, the main control module can adjust the operating state of the three-way valve, allowing the three-way valve to control the airflow at the first and second outlets according to the main control module's settings. When the oxygen concentration inside the cabin is too high, the main control module controls the three-way valve to reduce the airflow at the first outlet and increase the airflow at the second outlet, thus increasing the amount of air with a low oxygen concentration entering the cabin and lowering the overall oxygen concentration. Conversely, when the oxygen concentration inside the cabin is too low, the main control module controls the three-way valve to increase the airflow at the first outlet and decrease the airflow at the second outlet, thus decreasing the amount of air with a low oxygen concentration entering the cabin and raising the overall oxygen concentration. Therefore, through the control of the main control module, the oxygen concentration inside the cabin can be maintained at the set required level. This adjustable oxygen concentration hyperbaric oxygen chamber system re-injects air containing low oxygen concentration separated by a separation valve into the chamber. A three-way valve controls the flow rate of this air, allowing for flexible adjustment of the oxygen concentration within the chamber without reducing the flow rate of air containing high oxygen concentration or increasing the flow rate of compressed air. This reduces production costs and avoids increased noise. Furthermore, by controlling the vacuum pump's operation via the main control module, the injection of air containing high oxygen concentration into the chamber can be stopped, ensuring that the oxygen concentration inside the chamber is lower than the oxygen concentration in the air. This allows the adjustable oxygen concentration hyperbaric oxygen chamber system to be extended for use in hypoxic training and testing environments.

[0007] In one embodiment, the first sensor is also connected to the oxygen regulation module, and the first sensor is electrically connected to the main control module; The first sensor is also used to detect the atmospheric pressure of the host environment, the air flow rate containing high concentration of oxygen generated by the molecular sieve tower, and the corresponding oxygen concentration.

[0008] In one embodiment, a second sensor is provided inside the cabin, and the second sensor is electrically connected to the main control module; The second sensor is used to detect the oxygen concentration, temperature and humidity inside the cabin.

[0009] In one embodiment, the pressure relief valve is electrically connected to the main control module, and the pressure relief valve is used to relieve pressure according to the pressure relief command of the main control module.

[0010] In one embodiment, the pressure relief valve is equipped with a pressure control device for automatically releasing pressure when the air pressure inside the cabin reaches a preset pressure relief threshold.

[0011] In one embodiment, the cabin is equipped with an in-cabin display screen, which is electrically connected to the main control module.

[0012] In one embodiment, the first air compressor is an oil-free air compressor, and the vacuum pump is an oil-free vacuum pump.

[0013] In one embodiment, the second air compressor is an oil-free air compressor.

[0014] In one embodiment, the main control module includes a microcontroller.

[0015] In one embodiment, the one-way valve is connected to a third air compressor, the outlet of the one-way valve is connected to the inlet of the third air compressor, and the outlet of the third air compressor is connected to the cabin via a pipe; the third air compressor is used to pressurize and compress the air containing a low concentration of oxygen from the one-way valve to inject it into the cabin. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of the hyperbaric oxygen chamber system with adjustable oxygen concentration according to the present invention. Detailed Implementation

[0017] To make the above-mentioned objects, features, and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of the present invention. However, the present invention can be practiced in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0018] It should be noted that when an element is said to be "fixed to" another element, it can be directly on the other element or there may be an intervening element. When an element is said to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. Conversely, when an element is said to be "directly on" another element, there is no intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0019] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0020] This invention discloses a hyperbaric oxygen chamber system with adjustable oxygen concentration.

[0021] like Figure 1 As shown, the hyperbaric oxygen chamber system with adjustable oxygen concentration includes a main unit and a chamber body. The main unit includes a main control module, an oxygen regulation module, and a pressure regulation module. The pressure regulation module includes a low-oxygen air regulation submodule and a pressurized air submodule. The chamber body, the oxygen regulation module, and the pressure regulation module are electrically connected to the main control module.

[0022] The pressurized air submodule includes a first air compressor, a pressure relief valve, and a first sensor. The first air compressor is connected to the cabin via a pipe and is used to inject compressed air into the cabin to inflate and pressurize it. The pressure relief valve is connected to the cabin via a pipe and is used to release gas inside the cabin when the internal pressure exceeds a set pressure to maintain stable internal pressure, and to discharge gas inside the cabin after the cabin has finished operating, so that the internal and external pressures of the cabin are consistent. The first pressure sensor is connected to the cabin via a pipe and is used to detect the internal air pressure of the cabin and provide a pressure detection signal to the main control module, so that the main control module can control the internal air pressure of the cabin.

[0023] The oxygen regulation module includes a second air compressor, a separation valve, a molecular sieve tower, a flow limiting valve, and a vacuum pump. The outlet of the second air compressor is connected to the inlet of the separation valve. The bidirectional vent of the separation valve is connected to the inlet of the molecular sieve tower. The exhaust port of the separation valve is connected to the low-oxygen air regulation submodule. The outlet of the molecular sieve tower is connected to the inlet of the flow limiting valve. The outlet of the flow limiting valve is connected to the inlet of the vacuum pump. The outlet of the vacuum pump is connected to the chamber via a pipe. The second air compressor is used to inject compressed air into the molecular sieve tower through the separation valve. The molecular sieve tower is used to perform high-pressure adsorption of oxygen in the air and inject the air containing a high concentration of oxygen into the chamber through the flow limiting valve and the vacuum pump.

[0024] Because the internal pressure of the chamber is higher than the ambient pressure, the operating conditions of the molecular sieve tower will change, leading to a decrease in its oxygen production capacity. By installing a vacuum pump at the oxygen outlet of the molecular sieve tower, the outlet pressure can be reduced, maintaining a reasonable pressure difference between the inlet and outlet, thus ensuring that the oxygen production capacity of the molecular sieve tower does not decrease. Simultaneously, because the vacuum pump can output high-pressure gas, air containing a high concentration of oxygen can be smoothly injected into the chamber.

[0025] Since the molecular sieve tower has a limited capacity to adsorb oxygen, if the vacuum pump operates too fast, the molecular sieve tower may malfunction, resulting in insufficient oxygen concentration in the air containing high oxygen levels. By installing a flow-limiting valve between the vacuum pump inlet and the molecular sieve tower outlet, it can be ensured that the vacuum pump can only draw the gas flow rate limited by the flow-limiting valve, thus guaranteeing the normal operation of the molecular sieve tower.

[0026] The low-oxygen air conditioning submodule includes a three-way valve and a one-way valve. The three-way valve has an inlet, a first outlet, and a second outlet. The three-way valve connects to a separation valve and a one-way valve via its inlet and second outlet, respectively. The one-way valve connects to the chamber via a pipe. The separation valve is used to inject air containing a low concentration of oxygen, generated by the molecular sieve tower adsorption, into the inlet of the three-way valve through its exhaust port. The three-way valve is used to inject the air containing a low concentration of oxygen into the atmosphere and the chamber through its first and second outlets, respectively, thereby regulating the oxygen concentration inside the chamber. When injecting air containing a low concentration of oxygen into the chamber, if the injection pressure is lower than the internal pressure of the chamber, the low-oxygen air conditioning submodule can pressurize the air before injecting it into the chamber, as needed.

[0027] By installing a one-way valve between the second outlet of the three-way valve and the chamber, the three-way valve can inject air containing a low concentration of oxygen into the chamber through the second outlet, while the gas inside the chamber cannot flow back to the three-way valve through the second outlet, effectively ensuring the normal operation of the hyperbaric oxygen chamber system with adjustable oxygen concentration.

[0028] When the aforementioned hyperbaric oxygen chamber system with adjustable oxygen concentration is in operation, the main unit's pressure regulation module continuously injects compressed air into the chamber via the first air compressor, maintaining a high pressure and high air freshness inside the chamber. Simultaneously, the main unit's oxygen regulation module continuously injects compressed air into the molecular sieve tower via the separation valve through the second air compressor, ensuring a continuous supply of high-concentration oxygen air into the chamber. Simultaneously, the separation valve injects low-concentration oxygen air generated by the molecular sieve tower through the inlet of a three-way valve. The three-way valve further injects low-concentration oxygen air into the atmosphere and a check valve through the first and second outlets, respectively. The check valve then injects low-concentration oxygen air into the chamber. Because the pressure regulation module is electrically connected to the main control module, the main control module can adjust the operating state of the three-way valve, allowing the three-way valve to control the airflow at the first and second outlets according to the main control module's settings. When the oxygen concentration inside the cabin is too high, the main control module controls the three-way valve to reduce the airflow at the first outlet and increase the airflow at the second outlet, thus increasing the amount of air with a low oxygen concentration entering the cabin and lowering the overall oxygen concentration. Conversely, when the oxygen concentration inside the cabin is too low, the main control module controls the three-way valve to increase the airflow at the first outlet and decrease the airflow at the second outlet, thus decreasing the amount of air with a low oxygen concentration entering the cabin and raising the overall oxygen concentration. Therefore, through the control of the main control module, the oxygen concentration inside the cabin can be maintained at the set required level. This adjustable oxygen concentration hyperbaric oxygen chamber system re-injects air containing low oxygen concentration separated by a separation valve into the chamber. A three-way valve controls the flow rate of this air, allowing for flexible adjustment of the oxygen concentration within the chamber without reducing the flow rate of air containing high oxygen concentration or increasing the flow rate of compressed air. This reduces production costs and avoids increased noise. Furthermore, by controlling the vacuum pump's operation via the main control module, the injection of air containing high oxygen concentration into the chamber can be stopped, ensuring that the oxygen concentration inside the chamber is lower than the oxygen concentration in the air. This allows the adjustable oxygen concentration hyperbaric oxygen chamber system to be extended for use in hypoxic training and testing environments.

[0029] The first sensor is also connected to the oxygen regulation module and electrically connected to the main control module. The first sensor is also used to detect the atmospheric pressure of the host environment, the airflow rate and corresponding oxygen concentration of the high-concentration oxygen-containing air generated by the molecular sieve tower. It can be understood that the first sensor may include multiple different sensors installed within the host, each of which can be used to detect the internal air pressure of the cabin, the atmospheric pressure of the host environment, the airflow rate and corresponding oxygen concentration of the high-concentration oxygen-containing air generated by the molecular sieve tower, respectively. Furthermore, the main control module can perform intelligent control based on the detection data from the first sensor.

[0030] The cabin contains a second sensor, which is electrically connected to the main control module. This second sensor is used to detect the oxygen concentration, temperature, and humidity inside the cabin. It can be understood that the second sensor may include multiple different sensors installed inside the cabin, each capable of detecting parameters such as oxygen concentration, temperature, and humidity.

[0031] Furthermore, the main control module can perform intelligent control based on the detection data from the second sensor. For example, when the air pressure inside the chamber is too low, the main control module controls the first air compressor to increase the flow rate of compressed air injected into the chamber, thereby increasing the air pressure inside the chamber; when the air pressure inside the chamber is too high, the main control module controls the first air compressor to decrease the flow rate of compressed air injected into the chamber and opens the pressure relief valve to accelerate the exhaust of air from the chamber, thereby reducing the air pressure inside the chamber. Through the electrical connection between the second sensor and the main control module, the main control module can acquire real-time oxygen concentration data inside the chamber; when the oxygen concentration inside the chamber is too low, the main control module controls the three-way valve to decrease the flow rate of air containing low-concentration oxygen injected into the chamber. Since the flow rate of air containing high-concentration oxygen injected into the chamber remains unchanged, this increases the oxygen concentration inside the chamber; when the oxygen concentration inside the chamber is too high, the main control module controls the three-way valve to increase the flow rate of air containing low-concentration oxygen injected into the chamber. Since the flow rate of air containing high-concentration oxygen injected into the chamber remains unchanged, this decreases the oxygen concentration inside the chamber.

[0032] The pressure relief valve is electrically connected to the main control module and is used to release pressure according to the pressure relief command from the main control module. This electrical connection allows the main control module to control the opening of the pressure relief valve in real time when it determines that the internal air pressure is too high, thereby reducing the internal air pressure. Conversely, it controls the valve to close in real time when it determines that the internal air pressure has dropped to a reasonable range, thus maintaining pressure inside the cabin.

[0033] The pressure relief valve is equipped with a pressure control device, which is used to automatically release pressure when the air pressure inside the cabin reaches a preset pressure relief threshold.

[0034] The cabin is equipped with an in-cabin display screen, which is electrically connected to the main control module. This connection allows personnel inside the cabin to interact with the main control module in real time, thereby enhancing their user experience.

[0035] The types of the first air compressor, vacuum pump, and second air compressor can be selected according to actual needs. Preferably, the first air compressor, vacuum pump, and second air compressor are all oil-free. Setting the first air compressor, vacuum pump, and second air compressor to be oil-free avoids contamination of the cabin interior by these components and prevents the cabin interior from containing oil or gas.

[0036] The low-oxygen air conditioning submodule can repressurize the discharged low-oxygen air before refilling it into the chamber, as needed. Furthermore, a one-way valve is connected to a third air compressor. The outlet of the one-way valve is connected to the inlet of the third air compressor, and the outlet of the third air compressor is connected to the chamber via a pipe. The third air compressor is used to pressurize the air containing a low concentration of oxygen from the one-way valve and inject it into the chamber. When the internal pressure of the chamber is high, the third air compressor ensures that the air containing a low concentration of oxygen is successfully injected into the chamber, preventing injection failure.

[0037] The main control module includes a microcontroller. The main control module is electrically connected to the first air compressor, the second air compressor, the three-way valve, the first sensor, the second sensor, the in-cabin display screen, and the pressure relief valve via the microcontroller. The design principles of this hyperbaric oxygen chamber system with adjustable oxygen concentration will be introduced below.

[0038] The oxygen concentration in the air is 20.9%. After oxygen separation, high-purity oxygen with an oxygen concentration higher than 90% (hereinafter referred to as high-concentration oxygen) and low-purity oxygen with an oxygen concentration lower than 18% (hereinafter referred to as low-oxygen air) are separated. However, after the high-concentration oxygen and low-oxygen air are combined, the concentration is still the same as in the air at 20.9%. If, before mixing, a portion of the low-oxygen air is discharged into the air, and the remaining low-oxygen air enters the cabin and mixes with the high-concentration oxygen, then the oxygen concentration in the gas inside the cabin will be higher than 20.9%.

[0039] The air flow rate for filling the cabin is A liters / minute, with an oxygen concentration of 20.9%; the oxygen-generating air flow rate is B liters / minute, of which the high-concentration oxygen flow rate is b1 liters / minute and the low-oxygen air flow rate is b2 liters / minute. b2 is further divided into b21 and b22, wherein: B=b1+b2, b2=b21+b22, (b1*90%+b2*18%) / (b1+b2)=20.9%; B1 and B21 are injected into the cabin, while B22 is released into the atmosphere. The value of B22 can be varied from 0 to B2 through a three-way valve, thereby achieving the purpose of regulating the oxygen concentration inside the cabin.

[0040] The total gas flow rate into the chamber is: A + b1 + b21, where the maximum value of b21 is b2, and the minimum value is 0. When b21 reaches its maximum value, all the low-oxygen air is injected into the oxygen chamber; when b21 reaches its minimum value, all the low-oxygen air is released into the atmosphere and does not enter the chamber. Therefore, the oxygen concentration in the chamber is: Poxygen = (A * 20.9% + b1 * 90% + b21 * 18%) / (A + b1 + b21). Since b21 = 0, the simplified formula is: Poxygen = (A * 20.9% + b1 * 90%) / (A + b1) > 20.9%. Poxygen reaches its maximum when A is 0, equaling 90%. As A approaches infinity, Poxygen approaches 20.9%. Considering actual cost, A will not be much larger than b1; the ratio of A to b1 is generally around 10. Taking A / b1 = 10 as an example, the oxygen concentration inside the cabin can be calculated as follows: P oxygen=(A*20.9%+b1*90%) / (A+b1)=((b1*10)*20.9+b1*90%) / (b1*10+b1) =(10b1*20.9%+b1*90%) / 11b1=(2.09b1+0.9b1) / 21b1=2.99 / 11=0.271818=27.2%; The minimum oxygen concentration in the cabin is: Poxygen (minimum) = (A*20.9% + b1*90% + b2*18%) / (A+b1+b2), Since b21 = b2, it simplifies to: P_oxygen (minimum) = (A * 20.9% + b1 * 90% + b2 * 18%) / (A + (b1 + b2)) =(A*20.9%+b1*90%+b2*18%) / (A+(B)) =(A*20.9%+B*20.9) / (A+B)=20.9% By adjusting the emissions from B22, the oxygen concentration inside the cabin is maintained between 20.9% and 27.2%.

[0041] The adjustment of b22 here can be achieved using stepless valve adjustment or time-division multiplexing via PWM. The principle is similar to that of other circuits. PWM (Pulse Width Modulation) is an effective technique for controlling analog circuits by changing the width of pulses. Its core lies in adjusting the duty cycle of a series of fixed-frequency pulses, i.e., the ratio of the high-level time to the entire cycle time, thereby simulating a continuous analog signal. This technique enables digital hardware such as microcontrollers to precisely control analog circuits.

[0042] If the injection rate of b1 remains constant while the injection rate of b21 is increased, the oxygen concentration inside the chamber will decrease. Calculated using the formula above, the minimum oxygen concentration inside the chamber will approach the concentration of b2, which is 18%. Therefore, by adjusting the injection ratio of A, b1, and b21, the concentration inside the chamber can be adjusted between the minimum and maximum concentrations, as in the example above, where it can be adjusted between 18% and 27.2%.

[0043] This invention patent is designed based on this principle, and achieves the purpose of adjusting the oxygen concentration in the cabin by adjusting A, b1 and b2.

[0044] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0045] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this invention patent should be determined by the appended claims.

Claims

1. An oxygen concentration adjustable hyperbaric chamber system, characterized by, The system includes a main unit and a cabin. The main unit includes a main control module, an oxygen regulation module, and a pressure regulation module. The pressure regulation module includes a low-oxygen air regulation submodule and a pressurized air submodule. The cabin, the oxygen regulation module, and the pressure regulation module are electrically connected to the main control module. The pressure-holding air submodule includes a first air compressor, a pressure relief valve, and a first sensor. The first air compressor is connected to the cabin via a pipe and is used to inject compressed air into the cabin to inflate and pressurize it. The pressure relief valve is connected to the cabin via a pipe and is used to release gas from the cabin when the internal pressure exceeds a set pressure to maintain a stable internal pressure, and to discharge gas from the cabin after operation to ensure consistent pressure inside and outside the cabin. The first pressure sensor is connected to the cabin via a pipe and is used to detect the internal air pressure and provide a pressure detection signal to the main control module for control of the internal air pressure. The oxygen regulation module includes a second air compressor, a separation valve, a molecular sieve tower, a flow limiting valve, and a vacuum pump. The outlet of the second air compressor is connected to the inlet of the separation valve. The bidirectional vent of the separation valve is connected to the inlet of the molecular sieve tower. The exhaust port of the separation valve is connected to the low-oxygen air regulation submodule. The outlet of the molecular sieve tower is connected to the inlet of the flow limiting valve. The outlet of the flow limiting valve is connected to the inlet of the vacuum pump. The outlet of the vacuum pump is connected to the chamber via a pipe. The second air compressor is used to inject compressed air into the molecular sieve tower through the separation valve. The molecular sieve tower is used to perform high-pressure adsorption of oxygen in the air and inject the air containing a high concentration of oxygen into the chamber through the flow limiting valve and the vacuum pump. The low-oxygen air conditioning submodule includes a three-way valve and a one-way valve. The three-way valve includes an inlet, a first outlet, and a second outlet. The three-way valve is connected to the separation valve and the one-way valve through its own inlet and second outlet, respectively. The one-way valve is connected to the cabin through a pipe. The separation valve is used to inject air containing low concentration of oxygen generated by the molecular sieve tower through the exhaust port of the separation valve into the inlet of the three-way valve. The three-way valve is used to inject air containing low concentration of oxygen into the atmosphere and the cabin through the first outlet and the second outlet, respectively, thereby regulating the oxygen concentration in the cabin.

2. The adjustable oxygen concentration hyperbaric chamber system of claim 1, wherein, The first sensor is also connected to the oxygen regulation module, and the first sensor is electrically connected to the main control module; The first sensor is also used to detect the atmospheric pressure of the host environment, the air flow rate containing high concentration of oxygen generated by the molecular sieve tower, and the corresponding oxygen concentration.

3. The hyperbaric oxygen chamber system with adjustable oxygen concentration according to claim 2, characterized in that, The cabin is equipped with a second sensor, which is electrically connected to the main control module. The second sensor is used to detect the oxygen concentration, temperature and humidity inside the cabin.

4. The hyperbaric oxygen chamber system with adjustable oxygen concentration according to claim 3, characterized in that, The pressure relief valve is electrically connected to the main control module, and the pressure relief valve is used to relieve pressure according to the pressure relief command of the main control module.

5. The hyperbaric oxygen chamber system with adjustable oxygen concentration according to claim 4, characterized in that, The pressure relief valve is equipped with a pressure control device, which is used to automatically release pressure when the air pressure inside the cabin reaches a preset pressure relief threshold.

6. The hyperbaric oxygen chamber system with adjustable oxygen concentration according to any one of claims 1 to 5, characterized in that, The cabin is equipped with an in-cabin display screen, which is electrically connected to the main control module.

7. The hyperbaric oxygen chamber system with adjustable oxygen concentration according to any one of claims 1 to 5, characterized in that, The first air compressor is an oil-free air compressor, and the vacuum pump is an oil-free vacuum pump.

8. The hyperbaric oxygen chamber system with adjustable oxygen concentration according to any one of claims 1 to 5, characterized in that, The second air compressor is an oil-free air compressor.

9. The hyperbaric oxygen chamber system with adjustable oxygen concentration according to claim 1, characterized in that, The main control module includes a microcontroller.

10. The hyperbaric oxygen chamber system with adjustable oxygen concentration according to claim 1, characterized in that, The one-way valve is connected to a third air compressor, the outlet of the one-way valve is connected to the inlet of the third air compressor, and the outlet of the third air compressor is connected to the cabin through a pipe. The third air compressor is used to pressurize and compress air containing a low concentration of oxygen from the one-way valve for injection into the cabin.

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