Hierarchical pressure control type hyperbaric oxygen chamber

Abstract

The invention relates to the technical field of oxygen chambers, in particular to a hierarchical pressure control type hyperbaric oxygen chamber which comprises a chamber body, a pressurizing chamber communicated with the chamber body is arranged at the bottom of the chamber body, an oxygen inlet and an oxygen outlet are formed in the upper end of the chamber body, and the two ends of the oxygen inlet are connected with a hyperbaric oxygen source and a breathing mask respectively. Two ends of the oxygen outlet are respectively connected with the oxygen inhalation mask and the pressure tank, a pressure release valve is arranged on the pressure tank, and the outlet end of the pressure tank is connected with the bottom of the pressurizing chamber; a movable sealing plate is arranged in the pressurizing chamber, a guide rod is arranged at the top of the movable sealing plate, two vertical plates are arranged on the two sides of the upper surface of the pressurizing chamber respectively, a space for the guide rod to move is formed between every two vertical plates, a plurality of limiting grooves are correspondingly formed in the inner walls of every two vertical plates respectively, and a limiting plate is arranged in one corresponding limiting groove. And the bottom of the pressurizing chamber is connected with an exhaust pipe. According to the invention, accurate control of the pressure in the cabin and high efficiency and energy conservation are realized, and low-noise, high-safety and flexible adjusting functions are provided.

Description

Technical Field

[0001] The invention relates to the technical field of oxygen chambers, in particular to a graded pressure-controlled hyperbaric oxygen chamber. Background Art

[0002] The oxygen chamber is a special medical device for hyperbaric oxygen therapy. Its principle is to place the user in an oxygen-rich environment with a pressure higher than normal atmospheric pressure. Under the action of high pressure, oxygen is input into the respiratory and microcirculatory systems to reach various organs of the human body, increasing the level of arterial oxygen partial pressure and oxygen saturation to promote human metabolism. Treatment in a hyperbaric oxygen chamber is generally combined with pure oxygen inhalation therapy, but the oxygen concentration in the oxygen chamber should not be too high. At present, the commonly used hyperbaric oxygen chamber pressurization method is to provide high-pressure air filling pressurization with an air compressor. The advantage of this solution is that the inflation speed is fast, but there are the following defects: First, the air compressor generally has a large noise, which will cause noise trouble to the user and lead to a bad user experience; second, after the oxygen chamber pressure is reached, the pressure relief valve is generally used to stabilize the pressure, and the air compressor needs to run all the time, resulting in poor energy saving. Summary of the invention

[0003] In order to solve the above technical problems, the present invention specifically adopts the following technical solutions.

[0004] A graded pressure-controlled hyperbaric oxygen chamber is designed, comprising a chamber, a pressurized chamber is arranged at the bottom of the chamber, a vent hole connected to the pressurized chamber is opened at the bottom of the chamber, an oxygen inlet and an oxygen outlet are respectively arranged at the upper end of the chamber, the outer end of the oxygen inlet is connected to a high-pressure oxygen source through an oxygen inlet pipe, the inner end is connected to an air inlet of an oxygen mask in the chamber through an air pipe, an oxygen inlet solenoid valve is arranged on the oxygen inlet pipe, the inner end of the oxygen outlet is connected to an air outlet of the oxygen mask in the chamber through an air pipe, the outer end is connected to a pressure tank through an oxygen outlet pipe, a pressure relief valve is arranged on the pressure tank, and the outlet end of the pressure tank is connected to the bottom of the pressurized chamber through an air supply pipe;

[0005] A movable sealing plate is provided in the pressurized chamber and is slidably sealed with the inner wall thereof. The movable sealing plate divides the pressurized chamber into upper and lower independent sealing cavities. A guide rod is provided on the top of the movable sealing plate and is sealed to extend out of the pressurized chamber. Two vertical plates are provided on both sides of the upper surface of the pressurized chamber, and a space for the guide rod to move is provided between each two vertical plates. A plurality of limit grooves are correspondingly provided on the inner walls of each two vertical plates, and a limit plate is provided in one of the corresponding limit grooves.

[0006] An exhaust pipe is connected to the bottom of the pressurized chamber, and an exhaust solenoid valve is connected to the exhaust pipe.

[0007] Preferably, a limiting block is provided at the bottom between the two vertical plates, a limiting hole for the guide column to pass through is opened on the limiting block, and the top of the guide column extends into the limiting hole.

[0008] Preferably, buffer blocks are respectively provided on both sides of the bottom of the movable sealing plate.

[0009] Preferably, a sealing ring 1 is sleeved on the outer wall of the movable sealing plate.

[0010] Preferably, a second sealing ring is sleeved on the guide post to form a seal between the guide post and the pressurized chamber.

[0011] The beneficial effects of the present invention are:

[0012] 1. The present invention provides a plurality of limit grooves and sets the limit plates in the corresponding limit grooves according to the needs of the users, so that different treatment pressures can be adjusted according to the needs of different users. The up and down movement of the movable sealing plate can accurately control the degree of air compression in the pressurized chamber, thereby realizing graded control of the pressure in the chamber and ensuring the stability and safety of the treatment effect.

[0013] 2. Compared with the traditional hyperbaric oxygen chamber, the present invention directly compresses the air in the pressurized chamber by driving the movable sealing plate through the high-pressure oxygen source, instead of continuously filling the chamber with air. This method not only reduces energy consumption, reduces the noise level of the system, provides a quieter and more comfortable treatment environment, improves user experience, but also improves system efficiency and reduces operating costs.

[0014] 3. An oxygen concentration sensor is installed in the cabin to monitor the oxygen concentration in the cabin in real time. Once an abnormal increase in oxygen concentration is detected, the system will automatically close the oxygen inlet solenoid valve and open the exhaust solenoid valve, quickly reduce the pressure in the cabin and stop the oxygen supply. At the same time, an alarm will be issued to prompt the user to take corresponding measures, effectively preventing the occurrence of safety accidents such as fire.

[0015] 5. The pressurized chamber and the cabin of the present invention are compactly designed. The cooperation of the movable sealing plate and the buffer block not only avoids the hard collision between the movable sealing plate and the inner wall of the pressurized chamber, but also ensures the stability and sealing of the movable sealing plate. This design makes the whole system more reliable and easy to maintain. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the structure of the present invention;

[0017] Figure 2 It is a structural diagram of the boost process;

[0018] Figure 3 It is a structural schematic diagram of the step-by-step pressure control process;

[0019] Figure 4 It is a structural diagram of the pressure reduction process;

[0020] The numbers in the figure are: 1 cabin body, 2 oxygen mask, 3 oxygen inlet, 4 oxygen inlet solenoid valve, 5 cabin door, 6 vertical plate, 7 limit groove, 8 limit plate, 9 limit block, 10 guide rod, 11 pressurized chamber, 12 movable sealing plate, 13 exhaust solenoid valve, 14 exhaust pipe, 15 sealing ring one, 16 sealing ring two, 17 sealing ring one, 18 oxygen concentration sensor, 19 oxygen outlet, 20 buffer block. DETAILED DESCRIPTION

[0021] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0022] Example 1

[0023] A graded pressure-controlled hyperbaric oxygen chamber, such as Figures 1 to 4 As shown, it includes a cabin 1, a pressurized chamber 11 is provided at the bottom of the cabin 1, and a vent hole connected to the pressurized chamber 11 is opened at the bottom of the cabin 1, so that the cabin 1 and the pressurized chamber 11 can be ventilated to each other, and an oxygen inlet 3 and an oxygen outlet 19 are respectively provided at the upper end of the cabin 1, the outer end of the oxygen inlet 3 is connected to a high-pressure oxygen source through an oxygen inlet pipe, and the inner end is connected to the air inlet of the oxygen mask 2 in the cabin 1 through an air pipe, an oxygen inlet solenoid valve 4 is provided on the oxygen inlet pipe, the inner end of the oxygen outlet 19 is connected to the air outlet of the oxygen mask 2 in the cabin 1 through an air pipe, and the outer end is connected to a pressure tank through the oxygen outlet pipe, a pressure relief valve is provided on the pressure tank, and the outlet end of the pressure tank is connected to the bottom of the pressurized chamber 11 through an air supply pipe, and an exhaust pipe 14 is connected to the bottom of the pressurized chamber 11 to discharge excess gas into the air, and an exhaust solenoid valve 13 is connected to the exhaust pipe 14.

[0024] An oxygen concentration sensor 18 for detecting the oxygen concentration inside the cabin 1 is provided. If the user's oxygen mask 2 falls off or leaks, the oxygen concentration inside the oxygen cabin increases, which may cause a fire risk. At this time, the oxygen concentration sensor 18 in the cabin detects the increase in oxygen concentration in the cabin, automatically closes the oxygen inlet solenoid valve 4 and opens the exhaust solenoid valve 13. At this time, the oxygen cabin is automatically depressurized and oxygen supply is stopped. An alarm is further provided to remind the user that the oxygen concentration in the cabin is too high, and the user is guided to end the treatment or to restart the treatment after wearing the oxygen mask correctly.

[0025] A movable sealing plate 12 is provided in the pressurized chamber 11 and is slidingly sealedly connected to the inner wall thereof. Buffer blocks 20 are provided on both sides of the bottom of the movable sealing plate 12, respectively. The buffer blocks 20 can prevent the movable sealing plate 12 from colliding with the bottom of the pressurized chamber 11 when it moves downward, and can also leave a gap between the lower end of the movable sealing plate 12 and the pressurized chamber 11, so that the gas can push the movable sealing plate 12 upward. A sealing ring 1715 is sleeved on the outer wall of the movable sealing plate 12 to form a sealing fit between the movable sealing plate 12 and the inner wall of the pressurized chamber 11. The movable sealing plate 12 divides the pressurized chamber 11 into upper and lower independent sealed cavities. A guide rod 10 is provided on the top of the movable sealing plate 12 to seal and extend out of the pressurized chamber 11. Specifically, a sealing ring 2 16 is sleeved on the guide column to ensure the sealing of the pressurized chamber 11 when the guide column moves.

[0026] Two vertical plates 6 are respectively provided on both sides of the upper surface of the pressurized chamber 11, and a space for the guide rod 10 to move is provided between each two vertical plates 6. A plurality of limiting grooves 7 are respectively provided on the inner walls of each two vertical plates 6, and a limiting plate 8 is provided in one of the corresponding limiting grooves 7. The setting of the plurality of limiting grooves 7 can be used to adjust the position of the limiting plate 8 to limit the moving position of the movable sealing plate 12 in the pressurized chamber 11, and then the pressure of different levels can be adjusted according to the needs of the user, so as to achieve the purpose of graded pressure control. In order to make the guide column more stable when moving, a limiting block 9 is provided at the bottom between the two vertical plates 6, and a limiting hole for the guide column to pass through is opened on the limiting block 9, and the top of the guide column extends into the limiting hole.

[0027] When preparing for treatment in the present invention, after the user enters the cabin 1, he puts on the oxygen mask 2. The oxygen mask 2 and the user's mouth and nose form a relatively sealed internal space, which is isolated from the space inside the cabin 1; at this time, the oxygen inlet solenoid valve 4 is opened, and the high-pressure oxygen source enters the cabin 1 from the oxygen inlet 3, and enters the oxygen mask 2 along the trachea to be supplied to the user, so as to meet the user's treatment needs. At this time, excess oxygen and waste gas discharged by the user are discharged into the pressure tank outside the cabin 1 through the trachea connected to the oxygen outlet 19. As the gas entering the pressure tank increases, the excess gas is discharged along the pressure tank outlet into the lower cavity of the pressurized chamber 11. Since the exhaust solenoid valve 13 is in a closed state at this time, the lower space of the pressurized chamber 11 is connected to the inside of the pressure tank to increase the pressure together, and the higher pressure will drive the movable seal The plate 12 moves upward, squeezing the upper space in the pressurized chamber 11, so that the gas in the upper space of the pressurized chamber 11 enters the oxygen chamber through the vent hole, and is squeezed together with the air in the internal space of the oxygen chamber, and the pressure is increased, thereby forming a high-pressure environment, so that the movable sealing plate 12 moves upward together with the guide rod 10. When the top of the guide rod 10 contacts the limit plate 8, the movable sealing plate 12 and the guide column stop moving. At this time, the pressure in the cabin body 1 is stable. In this process, when the fixed position of the limit plate 8 is higher, the degree of squeezing the air in the pressurized chamber 11 by the movable sealing plate 12 is higher, and the pressure in the oxygen chamber is higher. By placing the limit plate 8 in the limit groove 7 of different heights, the use pressure of different oxygen chambers can be matched, and then the purpose of graded pressure control can be achieved according to the needs of the user. After the continuously input high-pressure oxygen is inhaled by the user, the excess gas and waste gas are discharged from the pressure relief valve of the pressure tank. In the above process, the pressure of the pressure relief valve on the pressure tank is greater than the pressure in the lower space of the pressurized chamber 11 in the stable state to ensure that there is no pressure relief during the pressure increase process. After the treatment is completed, the exhaust solenoid valve 13 is opened. At this time, the gas in the lower space of the movable sealing plate 12 is discharged along the exhaust solenoid valve 13, and the gas at the outlet of the pressure tank is also discharged from the exhaust solenoid valve 13. The pressure in the lower space of the movable sealing plate 12 drops to atmospheric pressure, and the movable sealing plate 12 automatically moves downward under the action of the oxygen chamber pressure and gravity until it moves to the bottom. At this time, the internal pressure of the oxygen chamber is released, and the user can leave the chamber to end the treatment.

[0028] Specifically, if the maximum pressure of the high-pressure oxygen source is 400Kpa, the maximum flow rate is 40L / min, the pressure relief pressure of the automatic pressure relief valve on the pressure tank is 200Kpa, the oxygen chamber is a cylinder with an inner diameter of 1m and a height of 2m, then the volume of the chamber 1 is approximately πr 2 h=3.14*1 2 *2=6.283m 3 , assuming that the pressurized chamber 11 is a cylinder with a radius of 2m, and the movable sealing plate 12 moves from the lowest point to the highest point with a displacement height of 0.5m, then its maximum compression volume is approximately 3.14*2 2*0.5=6.28m 3 , under the condition that the oxygen chamber is completely sealed, when the movable sealing plate 12 moves from the lowest point to the highest point, the pressure in the oxygen chamber will rise to 2 atmospheres. In plain areas, the relative pressure in the chamber is about 100Kpa, which can meet the pressure requirements of the user's high-pressure treatment; if three limit grooves 7 are provided, the cabin pressure corresponding to the middle limit groove 7 is between 0 and 100Kpa, which can meet the user's different treatment pressure settings. Since the pressure relief pressure of the automatic pressure relief valve of the pressure tank is 200Kpa, after the movable sealing plate 12 rises to the highest point, the pressure in the lower space of the movable sealing plate 12 is 100Kpa greater than the pressure in the upper space. Since the end surface area of ​​the movable sealing plate 12 is approximately πr 2 =3.14*2 2 =12.56m 2 , the upward pressure from the bottom is 1256KN, which is much greater than its own gravity, ensuring that it can rise to the highest point.

[0029] The present invention uses a high-pressure oxygen source to drive the movable sealing plate 12, compresses the air in the pressurized chamber 11, and pressurizes the cabin 1 through the vent, without the need to fill the oxygen cabin with air all the time, which saves energy to a certain extent. In addition, since no air compressor is used, the relative noise will be reduced, providing a better user experience. The appropriate height of the limit plate 8 can be set according to the test data, and different levels of treatment pressure can be set according to the needs of the user, which will be more stable in terms of pressure control.

[0030] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A graded pressure-controlled hyperbaric oxygen chamber, characterized in that: The invention comprises a cabin, a pressurized chamber is arranged at the bottom of the cabin, a vent hole connected to the pressurized chamber is opened at the bottom of the cabin, an oxygen inlet and an oxygen outlet are respectively arranged at the upper end of the cabin, the outer end of the oxygen inlet is connected to a high-pressure oxygen source through an oxygen inlet pipe, the inner end is connected to an air inlet of an oxygen mask in the cabin through an air pipe, an oxygen inlet solenoid valve is arranged on the oxygen inlet pipe, the inner end of the oxygen outlet is connected to an air outlet of the oxygen mask in the cabin through an air pipe, the outer end is connected to a pressure tank through an oxygen outlet pipe, a pressure relief valve is arranged on the pressure tank, and the outlet end of the pressure tank is connected to the bottom of the pressurized chamber through an air supply pipe; A movable sealing plate is provided in the pressurized chamber and is slidably sealed with the inner wall thereof. The movable sealing plate divides the pressurized chamber into upper and lower independent sealing cavities. A guide rod is provided on the top of the movable sealing plate and is sealed to extend out of the pressurized chamber. Two vertical plates are provided on both sides of the upper surface of the pressurized chamber, and a space for the guide rod to move is provided between each two vertical plates. A plurality of limit grooves are correspondingly provided on the inner walls of each two vertical plates, and a limit plate is provided in one of the corresponding limit grooves. An exhaust pipe is connected to the bottom of the pressurized chamber, and an exhaust solenoid valve is connected to the exhaust pipe.

2. The graded pressure-controlled hyperbaric oxygen chamber according to claim 1, characterized in that: A limiting block is arranged at the bottom between the two vertical plates, a limiting hole for the guide column to pass through is opened on the limiting block, and the top of the guide column extends into the limiting hole.

3. The graded pressure-controlled hyperbaric oxygen chamber according to claim 1, characterized in that: Buffer blocks are respectively arranged on both sides of the bottom of the movable sealing plate.

4. The graded pressure-controlled hyperbaric oxygen chamber according to claim 1, characterized in that: A sealing ring 1 is sleeved on the outer wall of the movable sealing plate.

5. The graded pressure-controlled hyperbaric oxygen chamber according to claim 1, characterized in that: A second sealing ring is sleeved on the guide post to form a seal between the guide post and the pressurized chamber.

Images