Hyperbaric oxygen chamber pressurization system with pressure relief type starting protection device

Abstract

The utility model discloses a hyperbaric oxygen chamber pressurization system with a pressure relief type starting protection device, which comprises an air pretreatment unit, a compressor and a one-way valve which are sequentially connected through a pipeline, and a pressure relief assembly used for releasing residual air pressure in an air outlet end pipeline of the compressor before the compressor is started is arranged on the pipeline between the compressor and the one-way valve. The utility model aims to provide the pressure relief device which actively releases residual air pressure in a pipeline through the pressure relief assembly before the compressor is started, so that the reverse pressure needing to be overcome by the compressor during starting is reduced, and the starting current is ensured not to be too large; the hyperbaric oxygen chamber pressurization system with the pressure relief type starting protection device can prevent the compressor from being overloaded or / and being not started due to electrical impact. The pressure relief function is independent of the main pressurization process, so that the efficiency and stability of the pressurization system are not affected, and the overall reliability and safety of the pressurization system equipment of the hyperbaric oxygen chamber are greatly improved.

Description

Technical Field

[0001] This utility model relates to the field of hyperbaric oxygen chamber accessories, and in particular to a hyperbaric oxygen chamber pressurization system with a pressure relief start-up protection device. Background Technology

[0002] A hyperbaric oxygen chamber is a medical device specifically designed to provide hyperbaric oxygen therapy. It is widely used in the rehabilitation of various diseases, such as gas embolism, poisoning, chronic trauma, and radiation damage. Its core working principle is to deliver a high concentration of oxygen under pressure, increasing the patient's oxygen levels and thus accelerating tissue repair and recovery. However, to ensure the safety and effectiveness of the treatment, the oxygen concentration and pressure within the chamber must be strictly controlled and maintained within a stable range. This relies on a pressurization system that regulates and maintains the pressure within the chamber, ensuring the smooth operation of oxygen therapy.

[0003] Traditional hyperbaric oxygen chamber pressurization systems are typically driven by compressors. During pressurization, the compressor compresses air or oxygen and delivers it into the chamber through pipelines, gradually increasing the internal pressure. When the internal pressure drops for various reasons, the system monitors this in real time via pressure sensors and activates the compressor as needed to replenish the pressure and restore the set pressure range. However, in actual operation, especially when the system is in a pressure-holding state, residual pressure inside the chamber may not be effectively released. This results in the compressor needing to overcome greater back pressure when restarting.

[0004] This phenomenon is particularly pronounced at the moment of compressor startup. Due to the need to overcome additional reverse pressure, the compressor's starting current increases dramatically, far exceeding the normal starting load. This surge in current not only places a huge burden on the compressor itself but also exerts a strong impact on the motor and electrical system. In extreme cases, the compressor may even fail to start due to overload. Once startup fails, the motor remains under high load for an extended period, making it highly susceptible to overheating, which can lead to coil burnout or fuse blowout, ultimately causing equipment failure and interrupting the treatment process.

[0005] Furthermore, in actual use of hyperbaric oxygen chambers, pressure adjustments are often frequent, which further exacerbates the aforementioned problems. Each pressure adjustment can affect the compressor's starting performance, leading to more significant fluctuations in starting current and overload phenomena. Over time, frequent high-current starts not only cause gradual wear and tear on the motor and electrical components but may also cause the equipment to operate under overload conditions for extended periods, thereby accelerating equipment aging and shortening its service life.

[0006] Furthermore, prolonged operation of motors under high loads can lead to more serious safety hazards. For example, excessively high temperatures in one side of the coil can cause internal short circuits in the motor, potentially even leading to fire or explosion. These potential problems not only threaten the normal operation of the equipment but may also endanger the lives of staff and patients.

[0007] Therefore, as an important medical technology, the reliability and safety of hyperbaric oxygen chambers are directly related to the treatment effect and health of patients. It is necessary to optimize and improve the above-mentioned problems with the pressurization system to ensure the long-term stability and safety of the equipment. Utility Model Content

[0008] The purpose of this invention is to provide a high-pressure oxygen chamber pressurization system with a pressure relief start-up protection device. By effectively reducing the reverse pressure during compressor startup, it solves the problem of startup difficulties caused by air pressure resistance, thereby improving the reliability and safety of equipment operation.

[0009] To achieve the above objectives, this utility model adopts the following solution: a hyperbaric oxygen chamber pressurization system with a pressure relief start-up protection device, comprising:

[0010] An air pretreatment unit is used to draw in outside air, filter it, and reduce noise generated during airflow.

[0011] The compressor, whose inlet end is connected to the outlet end of the air pretreatment unit, is used to pressurize the filtered and silenced air to form high-pressure gas, and send the high-pressure gas into the hyperbaric oxygen chamber.

[0012] A one-way valve, the inlet of which is connected to the outlet of the compressor, and the outlet is directly connected to the interior of the hyperbaric oxygen chamber, is used to prevent the backflow of high-pressure gas in the hyperbaric oxygen chamber when the compressor stops working.

[0013] A pressure relief assembly is installed on the pipeline between the compressor and the one-way valve to release residual gas pressure in the outlet pipeline before the compressor starts.

[0014] The above solution proactively releases residual gas pressure in the pipeline before the compressor starts via a pressure relief component. This reduces the reverse pressure the compressor needs to overcome during startup, ensuring that the starting current is not excessive and preventing compressor overload or electrical shocks that could prevent startup. The intervention of the pressure relief component reduces the burden on the compressor during startup, preventing motor overload. This pressure relief function is independent of the main pressurization process, ensuring that the efficiency and stability of system pressurization are not affected, thus greatly improving the overall reliability and safety of the equipment. Furthermore, the one-way valve effectively prevents gas backflow when the compressor stops working, ensuring that the gas pressure inside the oxygen chamber remains stable and avoiding system instability caused by gas backflow.

[0015] As a preferred embodiment of this utility model, the air pretreatment unit includes:

[0016] A filter used to draw in and filter outside air;

[0017] A silencer is connected to the air outlet of the filter via a pipeline and is used to reduce noise generated during airflow. The air outlet of the silencer is connected to the air inlet of the compressor via a pipeline.

[0018] The air pretreatment unit effectively filters impurities from the outside air and reduces noise, preventing contaminants from entering the oxygen chamber and affecting patient health. Furthermore, the filtered clean air reduces the accumulation of impurities in the pipelines, preventing wear, blockage, or jamming of the compressor and pressure relief components, thus extending equipment lifespan. The silencer effectively absorbs and attenuates airborne noise fluctuations through diffusion, diversion, and reflection, ultimately reducing noise transmission to the external environment.

[0019] As a preferred embodiment of this utility model, the pressure relief assembly includes:

[0020] A three-way connector is installed on the pipeline between the compressor and the check valve;

[0021] A pressure relief valve connected to one of the air outlet ends of the three-way connector via a pipeline;

[0022] The other outlet of the three-way connector is connected to the inlet of the one-way valve via a pipeline;

[0023] When the compressor restarts, the pressure relief valve releases the residual gas pressure in the pipeline between the compressor and the check valve, thereby eliminating the effect of residual pressure on the compressor startup.

[0024] The pressure relief valve, connected to the tee connector, effectively releases residual gas pressure in the pipeline, significantly reducing reverse pressure during compressor startup. This lowers the starting current, prevents motor overload and electrical system shock, extends equipment life, and improves operational safety. Furthermore, the pressure relief valve is independent of the main pressurization pipeline, so the supply of gas to the hyperbaric oxygen chamber does not need to be interrupted during pressure relief.

[0025] As a further embodiment of this utility model, the silencer includes:

[0026] The outer shell has a hollow and enclosed sound-absorbing inner cavity;

[0027] An air inlet pipe is provided on one side of the outer casing. One end of the air inlet pipe is connected to the air outlet of the filter via a pipeline, and the other end extends into the sound-absorbing inner cavity.

[0028] Multiple air outlet pipes are located on the other side of the outer casing. One end of each outlet pipe extends into the silencing cavity, while the other end extends to the outside of the casing and connects to the compressor's inlet via a pipeline. This allows air entering the silencing cavity through the inlet pipe to be output to the compressor's inlet through the outlet pipe. The silencer disperses the airflow through multiple outlet pipes, evenly guiding it to the compressor's inlet. This multi-outlet pipe design effectively disperses airflow, reducing noise generated by turbulence and significantly reducing noise pollution during system operation. Furthermore, the closed structure of the silencing cavity further absorbs and suppresses sound generated by airflow vibrations, improving the overall noise reduction effect. This design not only improves the system's acoustic performance but also optimizes airflow distribution. Stable airflow input reduces the impact of airflow fluctuations on the compressor's inlet, contributing to improved compressor efficiency and stability.

[0029] As a further embodiment of this invention, a radiator is provided on the pipeline between the compressor and the three-way connector to cool the high-pressure gas output from the compressor. The inlet end of the radiator is connected to the outlet end of the compressor via a pipeline, and the outlet end of the radiator is connected to the inlet end of the three-way connector via a pipeline. By reducing the high temperature of the high-pressure gas output from the compressor through the radiator, pressure fluctuations caused by gas expansion during pressure relief are reduced, thus improving pressure relief stability. Simultaneously, lowering the temperature of the high-pressure gas prevents damage to the sealing material of the pressure relief valve due to high temperature, extending the equipment's lifespan. Furthermore, the increased gas density after heat dissipation helps achieve more precise pressure control, further improving the overall stability of the system.

[0030] As a preferred embodiment of this utility model, the pressure relief assembly further includes a control module connected to the pressure relief valve. The control module automatically controls the opening and closing of the pressure relief valve according to the preset start-up conditions in the external control system. In the scenario of frequent pressurization / pressure holding in the hyperbaric oxygen chamber, automatic pressure relief control is achieved, reducing operational complexity, reducing the risk of human error, avoiding frequent compressor start-stop due to improper pressure control, and effectively extending the compressor life.

[0031] As a preferred embodiment of this invention, the pressure relief assembly further includes multiple sets of pressure sensors installed in the pipeline between the compressor and the one-way valve to monitor the gas pressure status in the pipeline. These pressure sensors are connected to an external control system to detect the residual gas pressure at different points in the pipeline between the compressor and the one-way valve in real time. Cross-validation of pressure data from multiple points effectively avoids the problem of incomplete pressure relief due to the failure of a single pressure sensor, significantly enhancing the system's fault tolerance. Simultaneously, this design reduces the risk of system downtime caused by pressure sensor failure, thereby ensuring the continuous and stable operation of the equipment and providing strong protection for the safety and reliability of the hyperbaric oxygen chamber.

[0032] As a preferred embodiment of this utility model, the pressure relief valve is an electrically controlled valve, which works with the control module to achieve a rapid response and ensure that the residual gas pressure in the pipeline is completely released before the compressor starts.

[0033] As a preferred embodiment of this utility model, the one-way valve includes a valve body with a valve cavity extending through it. Valve nozzles communicating with the valve cavity are installed at both ends of the valve body. Three spacer rings, each with a central through-hole, are fixed at intervals within the valve cavity. A valve core, movable back-and-forth, is inserted through the through-hole of each spacer ring. The front end of the valve core has a semi-circular valve head that blocks the central through-hole of the foremost spacer ring. A clearance groove with a diameter smaller than the diameter of the front valve core is provided on the outer wall of the tail end of the valve core between the middle and the tailmost spacer rings. A return spring is sleeved around the clearance groove, with its front end abutting against the front side wall of the clearance groove and its tail end abutting against the tailmost spacer ring. Several vent holes are sequentially spaced through the middle and tailmost spacer rings along their respective circumferences. The one-way valve works in conjunction with the pressure relief assembly to release residual gas pressure in the pipeline before the compressor starts, eliminating the influence of reverse pressure on startup. During startup, the one-way valve prevents gas backflow, ensuring stable gas pressure within the oxygen chamber. Its valve core is equipped with a return spring, which quickly restores the sealing state after pressure relief to prevent gas backflow. The optimized one-way valve improves system sealing and reliability, enhances compressor start-up efficiency and operational stability, while reducing the interference of airflow fluctuations on the system and extending equipment life. Its efficient reset design and pressure balancing function ensure that the system maintains good performance during frequent start-ups, shutdowns, and pressure regulation, avoiding damage caused by airflow fluctuations or poor sealing.

[0034] As a further embodiment of this invention, a pin is provided on the outer wall of the valve core. This pin can be inserted into a corresponding vent hole located on the intermediate spacer ring, effectively preventing the vent hole from becoming blocked. The pin design ensures that the vent hole remains unobstructed, avoiding airflow obstruction or pressure instability caused by vent blockage. This improvement enhances the functionality and reliability of the one-way valve.

[0035] In summary, the advantages of this invention compared to existing technologies are as follows: This invention optimizes the overall performance of the hyperbaric oxygen chamber pressurization system by connecting components such as an air pretreatment unit, compressor, radiator, one-way valve, control module, associated pressure sensor, and pressure relief valve through pipelines. The pressure relief component and the one-way valve form a pressure regulation system. The former actively eliminates residual air pressure in the pipeline during compressor startup, avoiding current surges and mechanical overloads caused by reverse pressure. The latter blocks gas backflow during shutdown, significantly improving equipment operational stability and extending the lifespan of key components under this dual protection. The air pretreatment unit, composed of a filter and a silencer, simultaneously performs gas purification and noise suppression functions. It prevents foreign objects from entering the compression chamber through multi-stage filtration and effectively attenuates high-frequency airflow noise through acoustic structural design, creating a suitable acoustic comfort environment.

[0036] The radiator provides continuous and stable gas temperature suppression for the pressurized airflow, eliminating abnormal pressure fluctuations caused by high gas temperatures and ensuring the thermal stability of the pressurization system under different operating conditions. Redundant multi-pressure sensors enable real-time and accurate monitoring of gas pressure parameters. When abnormal pressure is detected, the pressure relief valve can be quickly adjusted, effectively mitigating the risk of single-point failure of pressure sensors and significantly improving the fault tolerance of the pressurization system.

[0037] Through the coordinated operation of its components, the system not only ensures stability and safety but also enhances its intelligence, reduces reliance on manual operation, and lowers the failure rate. Optimizing the compressor's starting pressure effectively solves problems such as compressor overload and current surges, and multi-dimensional optimization further improves the overall reliability, safety, and lifespan of the pressurization system. These combined effects result in significant improvements in the hyperbaric oxygen chamber pressurization system's safety, reliability, intelligence, and user experience. Attached Figure Description

[0038] Figure 1 This is a schematic diagram of the connection structure of this utility model.

[0039] Figure 2 This is a cross-sectional structural diagram of the muffler in this utility model.

[0040] Figure 3 This is a cross-sectional structural diagram of the one-way valve in this utility model.

[0041] Figure 4 for Figure 3 An enlarged view of point A in the middle, and a schematic diagram of the airflow after the valve core is opened by air pressure.

[0042] Explanation of reference numerals in the attached drawings: 1. Filter; 2. Silencer; 3. Compressor; 4. Check valve; 5. Pressure relief assembly; 6. Three-way connector; 7. Pressure relief valve; 8. Radiator; 10. Air pretreatment unit; 20. Housing; 21. Silencer cavity; 22. Inlet pipe; 23. Outlet pipe; 40. Pin; 41. Valve body; 42. Valve cavity; 43. Valve nozzle; 44. Spacer ring; 45. Valve core; 46. Semi-circular valve head; 47. Relief groove; 48. Return spring; 49. Vent hole; 71. Control module. Detailed Implementation

[0043] The following detailed description provides various embodiments or examples for implementing this utility model. Of course, these are merely embodiments or examples and are not intended to be limiting. Additionally, repeated reference numerals, such as repeated numbers and / or letters, may be used in different embodiments. These repetitions are for the purpose of simple and clear description of the invention and do not represent a specific relationship between the different embodiments and / or structures discussed.

[0044] Furthermore, spatial terms may be used, such as "below," "lower," "from the inside out," "above," "upper," and similar terms. These relational terms are used to facilitate the description of the relationship between some elements or features in the drawings and other elements or features. These spatial relational terms include different orientations of the device in use or operation, as well as the orientations described in the drawings. The device may be rotated 90 degrees or otherwise to different orientations, and the spatially related adjectives used therein can be interpreted in the same way. Therefore, they should not be construed as limiting the invention. The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include one or more of that feature.

[0045] The present invention will be further described below with reference to the accompanying drawings and specific embodiments: Figures 1 to 4The hyperbaric oxygen chamber pressurization system shown includes an air pretreatment unit 10 for drawing in outside air, filtering it, and reducing noise generated during airflow. The outlet of the air pretreatment unit 10 is connected to a compressor 3 via a pipeline. The compressor 3 pressurizes the filtered and silenced air from the air pretreatment unit 10 to form high-pressure gas, which is then delivered into the hyperbaric oxygen chamber. To prevent gas backflow when the compressor 3 stops working and to ensure that the pressure inside the hyperbaric oxygen chamber remains stable, a one-way valve 4 is installed on the pipeline connecting the outlet of the compressor 3 and the hyperbaric oxygen chamber. It is particularly important to emphasize that when compressor 3 starts and pressurizes, a large amount of high-pressure gas remains in the pipeline between compressor 3 and the one-way valve. Therefore, when the hyperbaric oxygen chamber needs to be repressurized, the compressor must first overcome the remaining gas pressure in the outlet pipeline. This requires the motor driving the compressor to have a starting current greater than the initial start-up current, causing an instantaneous increase in starting current. Sometimes, this may prevent the compressor from starting, resulting in motor obstruction and prolonged heating of the motor's coil, potentially blowing the fuse and motor coil. Even if it starts, pressure adjustments are often frequent in the actual use of the hyperbaric oxygen chamber, and each pressure adjustment may affect the compressor's starting performance. Over time, frequent high-current starts will not only lead to gradual wear and tear on the motor and electrical components. Therefore, a three-way connector 6 is provided on the pipeline between compressor 3 and one-way valve 4. The inlet end of the three-way connector 6 is connected to the output pipeline of compressor 3, and the other two outlet ends of the three-way connector 6 are connected to the inlet end of the one-way valve 4 via a pipeline, and the other outlet end is connected to a pressure relief valve 7 via a pipeline. The pressure relief valve 7 and the three-way connector 6 together form the pressure relief assembly 5. The pressure relief assembly 5 actively releases residual gas pressure in the outlet pipeline of the compressor 3 before the compressor 3 starts, reducing the reverse pressure that the compressor 3 motor needs to overcome during startup. This ensures that the starting current is not excessive, preventing compressor overload or electrical shock that could prevent startup. Furthermore, it simultaneously addresses the issue of frequent compressor starts and high starting currents leading to gradual wear of the motor and electrical components.

[0046] like Figure 1 and Figure 2As shown in the diagram, the air pretreatment unit 10 in this embodiment includes a filter 1 for drawing in and filtering external air. The outlet of the filter 1 is connected to a silencer 2 via a pipe. Since the compressor 3 rapidly draws in a large amount of air during operation, the filter 1 ensures that the intake airflow does not contain a large amount of impurities, thus preventing wear on the compressor 3 and the pressure relief valve 7. The silencer 2 effectively reduces turbulent noise generated in the pipe during high-speed air intake. The silencer 2 consists of a hollow and enclosed outer shell 20, an intake pipe 22, and multiple outlet pipes 23. The hollow space within the inner wall of the silencer 2 forms a sound-absorbing cavity 21. One end of the intake pipe 22 is connected to the outlet of the filter 1 via a pipe, and the other end extends into the sound-absorbing cavity 21. Similarly, one end of each outlet pipe 23 extends into the sound-absorbing cavity 21, while the other end extends to the outside of the outer shell 20 and is connected to the intake of the compressor 3 via a pipe. When air enters the silencer cavity 21 through the intake pipe 22, the airflow enters a larger space. This space is designed to diffuse the airflow, reduce its speed, and decrease noise transmission. As the airflow diffuses, high-frequency noise is gradually absorbed and mitigated. Once the silencer cavity 21 is full of air, this air enters through the outlet pipes 23, eventually converging into the intake pipe of the compressor 3. The outlet pipes 23 are designed to allow air to flow out of the silencer cavity 21 and be distributed through multiple pipes. These outlet pipes help disperse different frequency components of noise in different directions, effectively reducing or dispersing noise in the airflow, thus achieving a noise reduction effect.

[0047] In addition, such as Figure 1 As shown in the figure, it can be clearly seen that in this embodiment, a radiator 8 is also provided on the pipeline between the compressor 3 and the three-way connector 6 to cool the temperature of the high-pressure gas output from the compressor 3. The air inlet end of the radiator 8 is connected to the air outlet end of the compressor 3 through a pipeline, and the air outlet end of the radiator 8 is connected to the air inlet end of the three-way connector 6 through a pipeline. A temperature sensor can be installed on the radiator 8 as needed using conventional methods to monitor the temperature of the high-pressure gas in the output pipeline of the compressor 3, and transmit the data to the external control system through a signal connection.

[0048] In addition, the pressure relief assembly 5 also includes a control module 71 connected to the pressure relief valve 7. This control module 71 automatically controls the opening and closing of the pressure relief valve 7 according to preset start-up conditions within the external control system, ensuring accurate release of residual gas pressure in the pipeline before the compressor 3 restarts. Multiple pressure sensors (not shown in the figure) are also installed in the pipeline between the compressor 3 and the one-way valve 4 to monitor the gas pressure status in the pipeline. These pressure sensors are connected to the external control system signal and are used to detect the residual gas pressure in the pipeline between the compressor 3 and the one-way valve 4 in real time, thereby facilitating the operator to optimize the control strategy of the pressure relief valve 7 using the external control system. In this embodiment, the pressure relief valve 7 is an electrically controlled valve, capable of automatically opening according to the pressure signal from the external control system and releasing the gas pressure in the pipeline within 3 seconds. In this embodiment, the external control system can integrate a central control unit such as a PLC or an embedded controller, utilizing components such as pressure sensors, temperature sensors, control module 71, and electrically controlled valves to monitor and adjust the operation of the hyperbaric oxygen chamber pressurization system in real time. The external control system can automatically determine the status of the entire pressurization system and react accordingly based on data from the pressure and temperature sensors. When the gas pressure exceeds the set threshold, the system automatically starts or stops compressor 3 and regulates the gas pressure through the electronically controlled pressure relief valve to ensure that the starting pressure of compressor 3 is maintained within a suitable range. Through real-time data acquisition and intelligent decision-making, the external control system optimizes the operating efficiency of the equipment in the entire pressurization system, avoids the current overload problem when compressor 3 starts, and automatically activates protection measures in case of abnormalities, thereby improving the reliability and safety of the pressurization system.

[0049] like Figure 3 and Figure 4As shown, the one-way valve 4 in this embodiment includes a valve body 41, with a valve cavity 42 extending through the valve body 41. Valve nozzles 43, which communicate with the valve cavity 42, are installed at the front and rear ends of the valve body 41, respectively. Three spacer rings 44, each with a central through hole, are fixedly spaced at intervals within the valve cavity 42. A valve core 45, capable of moving back and forth, is movably inserted through the through holes of the spacer rings 44. The front end of the valve core 45 is provided with a semi-circular valve head 46 that can block the central through hole of the foremost spacer ring 44. The diameter of the valve core 45 is larger than the diameter of the central through hole of the frontmost spacer 44. A relief groove 47 with a smaller diameter than the frontmost valve core 45 is provided on the outer wall of the tail end of the valve core 45 between the middle spacer 44 and the tailmost spacer 44. A return spring 48 is sleeved around the relief groove 47, with its front end abutting against the front side wall of the relief groove 47 and its tail end abutting against the tailmost spacer 44. Several vent holes 49 are sequentially spaced circumferentially through the middle and tailmost spacers 44. The multiple spacers 44 divide the valve chamber 42 into multiple parts, allowing the valve core 45 to move freely according to pressure changes, thus better responding to system pressure changes. This design makes the movement of the valve core 45 more flexible, ensuring smooth gas flow inside the one-way valve 4 and avoiding airflow blockage or leakage caused by valve core 45 misalignment or jamming. The design of the return spring 48 ensures that the valve core 45 can quickly return to its original position after pressure relief, maintaining good sealing performance and preventing gas from flowing back into the compressor outlet line after pressure relief.

[0050] In addition, to ensure that the vent 49 remains unobstructed and to avoid airflow obstruction or pressure instability caused by vent blockage, multiple pins 40 are provided around the outer wall of the valve core 45. These pins 40 can be inserted into the corresponding vent 49 located on the intermediate spacer ring 44. In this embodiment, the one-way valve 4 not only improves the sealing and reliability of the entire pressurization system but also enhances the starting efficiency and stability of the compressor 3. During startup, the one-way valve 4 effectively prevents backflow pressure and airflow fluctuations, ensuring smooth startup of the compressor 3. Simultaneously, by reducing gas backflow, it avoids the impact of unstable pressure after depressurization on the entire pressurization system, extending the service life of the components used in the pressurization system. More importantly, the efficient reset design and pressure balancing function of the one-way valve 4 ensure that the entire system maintains good operating performance even under frequent startups and pressure adjustments, preventing damage caused by airflow fluctuations or poor sealing.

[0051] In this embodiment, compressor 3 has a displacement of 120L / min and a rated pressure of 206Kpa. Radiator 8 uses a 120*120 specification and is paired with a 120*120 fan for heat dissipation. The tee connector 6 uses a T-type copper connector with M10 interfaces on both ends and an M6 interface on one end. One-way valve 4 has M10 interfaces on both ends, and pressure relief valve 7 has M6 interfaces on both ends. The connection is made via piping according to… Figure 1They are interconnected in various ways.

[0052] The foregoing has shown and described the basic principles and main features of this utility model, as well as its advantages. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A hyperbaric oxygen chamber pressurization system with a pressure relief start-up protection device, characterized in that, include: An air pretreatment unit (10) is used to draw in outside air, filter it, and reduce noise generated during airflow. The compressor (3) has its inlet end connected to the outlet end of the air pretreatment unit (10) for pressurizing the filtered and silenced air to form high-pressure gas and sending the high-pressure gas into the hyperbaric oxygen chamber. The one-way valve (4) has its inlet end connected to the outlet end of the compressor (3), and the outlet end is directly connected to the interior of the hyperbaric oxygen chamber. The one-way valve (4) is used to prevent the backflow of high-pressure gas in the hyperbaric oxygen chamber when the compressor (3) stops working. The pressure relief assembly (5) is installed on the pipeline between the compressor (3) and the check valve (4) to release the residual gas pressure in the outlet pipeline of the compressor (3) before it is started.

2. The hyperbaric oxygen chamber pressurization system with a pressure relief start-up protection device according to claim 1, characterized in that, The air pretreatment unit (10) includes: Filter (1) for drawing in and filtering outside air; A silencer (2) is connected to the outlet of the filter (1) via a pipeline and is used to reduce noise generated during air flow. The outlet of the silencer (2) is connected to the inlet of the compressor (3) via a pipeline.

3. The hyperbaric oxygen chamber pressurization system with a pressure relief start-up protection device according to claim 2, characterized in that, The pressure relief assembly (5) includes: A three-way connector (6) is installed on the pipeline between the compressor (3) and the one-way valve (4); A pressure relief valve (7) is connected to one of the air outlets of the three-way connector (6) via a pipeline. The other outlet of the three-way connector (6) is connected to the inlet of the one-way valve (4) via a pipeline; When the compressor (3) restarts, the pressure relief valve (7) is controlled to release the residual gas pressure in the pipeline between the compressor (3) and the check valve (4), thereby eliminating the effect of residual pressure on the start-up of the compressor (3).

4. The hyperbaric oxygen chamber pressurization system with a pressure relief start-up protection device according to claim 3, characterized in that, The silencer (2) includes: The outer shell (20) has a hollow and closed sound-absorbing inner cavity (21) inside. An air inlet pipe (22) is provided on one side of the outer casing (20). One end of the air inlet pipe (22) is connected to the air outlet of the filter (1) via a pipeline, and the other end extends into the sound-absorbing inner cavity (21). Multiple air outlet pipes (23) are provided on the other side of the outer casing (20), one end of each air outlet pipe (23) extends into the silencing cavity (21), and the other end extends to the outside of the outer casing (20) and is connected to the air inlet of the compressor (3) through a pipeline, so that the air entering the silencing cavity (21) through the air inlet pipe (22) is output to the air inlet of the compressor (3) through the air outlet pipe (23).

5. The hyperbaric oxygen chamber pressurization system with a pressure relief start-up protection device according to claim 3, characterized in that, A radiator (8) for cooling the high-pressure gas output from the compressor (3) is also provided on the pipeline between the compressor (3) and the three-way connector (6). The inlet end of the radiator (8) is connected to the outlet end of the compressor (3) through a pipeline, and the outlet end of the radiator (8) is connected to the inlet end of the three-way connector (6) through a pipeline.

6. The hyperbaric oxygen chamber pressurization system with a pressure relief start-up protection device according to claim 5, characterized in that, The pressure relief assembly (5) also includes a control module (71) connected to the pressure relief valve (7), which automatically controls the opening and closing of the pressure relief valve (7) according to the preset start conditions in the external control system.

7. The hyperbaric oxygen chamber pressurization system with a pressure relief start-up protection device according to claim 6, characterized in that, The pressure relief assembly (5) also includes multiple pressure sensors installed in the pipeline between the compressor (3) and the one-way valve (4) for monitoring the gas pressure status in the pipeline. The pressure sensors are connected to the external control system signal and are used to detect the residual gas pressure in the pipeline between the compressor (3) and the one-way valve (4) in real time.

8. The hyperbaric oxygen chamber pressurization system with a pressure relief start-up protection device according to claim 6 or 7, characterized in that, The pressure relief valve (7) is an electrically controlled valve.

9. The hyperbaric oxygen chamber pressurization system with a pressure relief start-up protection device according to claim 1, characterized in that, The one-way valve (4) includes a valve body (41) with a valve cavity (42) extending through it from front to back. A valve nozzle (43) that communicates with the valve cavity (42) is installed at the front and rear ends of the valve body (41). Three spacer rings (44) with through holes in the center are fixed at intervals in the valve cavity (42). A valve core (45) that can move back and forth is movably inserted in the through holes of the spacer rings (44). The front end of the valve core (45) is provided with a function to block the frontmost spacer ring (44). The semi-circular valve head (46) with a central through hole has a relief groove (47) on the outer wall of the tail of the valve core (45) with a diameter smaller than that of the front valve core (45). A return spring (48) is sleeved around the relief groove (47). The front end of the return spring (48) abuts against the front side wall of the relief groove (47) and the tail end abuts against the rearmost partition ring (44). Several vent holes (49) are interspersed along their respective circles on the middle partition ring (44) and the rearmost partition ring (44).

10. The hyperbaric oxygen chamber pressurization system with a pressure relief start-up protection device according to claim 9, characterized in that, The valve core (45) has a pin (40) on its outer wall, which can be inserted into the corresponding vent hole (49) on the intermediate spacer ring (44).

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