High-flow oxygen therapy and oxygen therapy all-in-one machine and micro-positive pressure breathing mask

Abstract

The application relates to the field of oxygen generators, in particular to a high-flow oxygen production and oxygen therapy integrated machine and a micro-positive-pressure breathing mask, which comprises an oxygen source, a warming and humidifying module and a micro-positive-pressure breathing mask; a plurality of electromagnetic valves, a plurality of pressure regulating valves, an oxygen outlet pipeline and an atomization outlet pipeline are arranged on the oxygen gas pipeline of the oxygen source; the warming and humidifying module is provided with an oxygen self-adaptive flow valve, a high-flow gas pipeline, an oxygen and clean air mixing bin, a clean air booster turbine fan, a flow sensor, an oxygen concentration sensor, a first pressure sensor, a liquid level sensing device, a temperature and humidity sensor, a warming and breathing pipeline and a micro-positive-pressure breathing mask provided with a second pressure sensor; the oxygen source gas pipeline comprises a first oxygen source pipeline, a second oxygen source pipeline, a merging pipeline and a backblowing pipeline; the first oxygen source pipeline or the second oxygen source pipeline gas pipeline branch forms an oxygen gas pipeline to the oxygen outlet pipeline and the atomization outlet pipeline; the oxygen gas pipeline and the atomization outlet pipeline are respectively provided with electromagnetic valves.

Description

Technical Field

[0001] This invention relates to the field of oxygen concentrators, specifically a high-flow oxygen concentrator and oxygen therapy integrated machine and a micro-positive pressure breathing mask. Background Technology

[0002] The main methods for producing oxygen include: VPSA (PSA, VPSA, VSA) oxygen production, membrane separation oxygen production, water electrolysis oxygen production, and chemical oxygen production. VPSA oxygen production utilizes a special molecular sieve to selectively adsorb impurities such as nitrogen, carbon dioxide, and water from the air. Under vacuum conditions, the molecular sieve is desorbed, thus producing oxygen with high purity through circulation. Typically, an air compressor is used to draw air as raw material, utilizing the molecular sieve's ability to adsorb nitrogen under specific conditions to obtain oxygen with high purity. With industrial development, the demand for oxygen is increasing. Traditional PSA oxygen production suffers from drawbacks such as excessive power consumption, high pressure inside the molecular sieve tank, high noise, unstable flow rate, and insufficient concentration. While ordinary VPSA oxygen generators can address the high pressure issue, flow rate and concentration remain unstable under high flow conditions, and noise levels remain high.

[0003] Meanwhile, depending on the severity of the patient's respiratory illness, respiratory treatment generally follows a sequence of low-flow oxygen therapy, high-concentration oxygen therapy, non-invasive mechanical ventilation, and invasive mechanical ventilation. During the recovery period, the sequence is invasive mechanical ventilation, non-invasive mechanical ventilation, high-concentration oxygen therapy, and low-flow oxygen therapy. However, current hospital respiratory therapy equipment has relatively limited functionality, requiring equipment changes for different treatment plans, which is very inconvenient. Currently, high-flow oxygen therapy in hospitals and homes primarily uses high-flow humidified breathing apparatus connected to an external oxygen source, requiring two devices and two systems, whose coordination and convenience need further improvement. Furthermore, most high-flow humidified breathing apparatus on the market use fully sealed, high-positive-pressure breathing masks, which have poor patient adaptability during oxygen therapy and require tight mask wearing to prevent air leakage from affecting treatment effectiveness.

[0004] Under current technological conditions, high-flow oxygen generation and respiratory therapy have several technical defects and limitations, mainly including the following:

[0005] Traditional oxygen generators often struggle to maintain a stable flow rate while ensuring a sufficiently high oxygen concentration at high output. Because the oxygen production capacity of molecular sieve adsorption towers fluctuates with changes in airflow conditions, control methods such as compressor speed and solenoid valve switching, without precise collaborative algorithms, struggle to provide timely and effective adjustments under real-time, high-load conditions. As a result, the oxygen concentration of the output gas frequently falls short of the set value, or the flow rate fluctuates, impacting the continuity and reliability of clinical treatment.

[0006] Controlling gas temperature and humidity under high flow rates presents significant challenges. As gas flow increases, traditional methods relying solely on heating plates and humidification fluid supply struggle to achieve precise control under rapidly changing flow conditions. Insufficient heat and moisture supply at high flow rates can lead to low temperature and humidity, while excessive supply can result in excessively high temperature and humidity or an inability to respond quickly to changes. This problem is particularly pronounced with variations in patient conditions and ventilation modes, imposing substantial additional manual adjustments and maintenance work on healthcare professionals and increasing the difficulty of clinical procedures.

[0007] In existing technologies, most face mask designs are relatively fixed or rely solely on simple pressure regulation to maintain a slight positive pressure within the mask. Airflow distribution issues become increasingly prominent under high-flow, long-duration treatment conditions. Traditional designs have a fixed internal structure, lacking the means to flexibly adjust the turbulence structure, adapter angles, and diaphragm aperture. As a result, it is difficult to maintain precise slight positive pressure within the mask, and even more difficult to fine-tune the airflow distribution according to the patient's facial features, breathing patterns, and treatment progress, thus affecting patient comfort and treatment effectiveness. Summary of the Invention

[0008] The purpose of this invention is to provide a high-flow oxygen generator and oxygen therapy device and a micro-positive pressure breathing mask to solve the technical problems mentioned in the background art.

[0009] Based on the above ideas, the present invention provides the following technical solution:

[0010] A high-flow oxygen generator and oxygen therapy integrated machine and a micro-positive pressure breathing mask, comprising:

[0011] Oxygen source, heating and humidification module and micro-positive pressure breathing mask;

[0012] The oxygen source is equipped with multiple solenoid valves, multiple pressure regulating valves, an oxygen outlet pipeline, and an atomizing outlet pipeline.

[0013] The heating and humidification module is equipped with an oxygen adaptive flow valve, a high-flow gas pipeline, an oxygen and clean air mixing chamber, a clean air booster turbine fan, a flow sensor, an oxygen concentration sensor, a first pressure sensor, a liquid level sensing device, a temperature and humidity sensor, a heated breathing pipeline, and a micro positive pressure breathing mask with a second pressure sensor.

[0014] The oxygen source gas pipeline includes a first oxygen source pipeline, a second oxygen source pipeline, a merging pipeline, and a return pipeline;

[0015] The first oxygen source pipeline or the second oxygen source pipeline is branched to form an oxygen gas pipeline to the oxygen outlet pipeline and the nebulizer pipeline; the oxygen gas pipeline and the nebulizer pipeline are respectively equipped with solenoid valves; the heating and humidification module is connected to the oxygen source and the oxygen adaptive flow valve through the confluence pipeline; the micro positive pressure breathing mask is connected to the high flow outlet through the heating pipe.

[0016] By integrating the three core components—oxygen source, heating and humidification module, and micro-positive pressure mask—into a single system, oxygen preparation, humidification, pressure regulation, and supply are organically unified. This integrated design eliminates the need for multiple devices to work together, significantly reducing the burden on medical personnel switching between different treatment protocols. Furthermore, because the system's components are pre-designed to be mutually compatible, the accuracy and stability of oxygen flow, concentration, and humidity control are greatly improved, contributing to providing more personalized and continuous high-quality oxygen therapy services for various respiratory patients.

[0017] Preferably, the oxygen source (1) produces oxygen with an oxygen concentration of 93% ± 3% and a flow rate of 10-30L.

[0018] High-flow-rate oxygen therapy provides a reliable gas supply. Compared to traditional oxygen therapy equipment, which struggles to maintain a stable high concentration of oxygen at high flow rates, this approach maintains a relatively constant high concentration level over a wide flow range. This not only meets the flexible oxygen concentration needs of different patients during periods of worsening or remission but also avoids frequent equipment changes and parameter adjustments in real-world clinical settings, thus improving the efficiency of healthcare workers and the patient's treatment experience.

[0019] Preferably, the oxygen source is compressed into the molecular sieve adsorption tower by a silent oil-free compressor, and oxygen with a concentration of 93% is produced by pressure swing adsorption. A multi-stage noise reduction structure is used for noise reduction.

[0020] This system employs a silent, oil-free compressor and molecular sieve pressure swing adsorption (VPSA) to produce high-concentration oxygen, achieving significant results in noise reduction and ensuring stable oxygen concentration. The oil-free compressor reduces lubricant contamination of the gas path and maintenance requirements, thereby improving the cleanliness of the oxygen source and the reliability of the equipment. Simultaneously, the molecular sieve adsorption tower, under VPSA conditions, can more efficiently separate nitrogen from the air, improving oxygen purity and collection efficiency. Furthermore, the introduction of a multi-stage noise reduction structure effectively solves the problem of excessive noise from traditional oxygen generators, causing discomfort to patients and medical staff, creating a quieter and more comfortable environment for clinical and home oxygen therapy.

[0021] Preferably, the silent oil-free compressor is placed inside a metal soundproof cover, and the solenoid valve and cooling fan are placed inside a secondary soundproof cover; the negative pressure exhaust pipe of the solenoid valve is connected to a central buffer silencer, and the central buffer silencer is connected to the negative pressure cylinder of the first compressor and the negative pressure cylinder of the second compressor is connected to the nitrogen exhaust silencer through a pipe;

[0022] The centrally located buffer silencer is a cavity with an internal gas buffer structure. The cavity contains one or more gas buffer channels, sound-absorbing cotton, and several air inlets and outlets.

[0023] The centrally located buffer silencer and nitrogen exhaust silencer are placed inside a metal silencer cover.

[0024] The multi-layered noise reduction and gas buffering structure design significantly improves the quietness and airflow stability of the entire oxygen generation system. Utilizing a combined structure of a metal silencer, a secondary silencer, and a central buffer silencer combined with a nitrogen exhaust silencer, noise from the compressor, valve switching, and negative pressure exhaust processes can be effectively eliminated in stages. Simultaneously, the gas buffer chamber and sound-absorbing cotton within the central buffer silencer provide a stable environment for gas flow, reducing airflow pulsation and pressure fluctuations. This not only improves environmental quietness but also makes gas output more uniform, thereby enhancing oxygen supply quality and patient comfort.

[0025] Preferably, the bottom of the molecular sieve adsorption tower (26) is provided with an oxygen backflushing switching solenoid valve and an anti-backflow diaphragm.

[0026] Adding an oxygen backflushing switching solenoid valve and an anti-backflow diaphragm to the bottom of the molecular sieve adsorption tower can improve the regeneration efficiency and service life of the molecular sieve during oxygen production. Under normal operating conditions, the molecular sieve adsorption tower needs to periodically remove adsorbed nitrogen and water molecules to restore adsorption performance. The oxygen backflushing and anti-backflow structure effectively prevents reverse gas flow from causing molecular sieve contamination or reduced adsorption efficiency. This improvement helps maintain long-term high-efficiency oxygen production capacity, reduces equipment maintenance and replacement costs, extends equipment life, and thus provides users with a stable, economical, and long-lasting high-quality oxygen source.

[0027] Preferably, the heating and humidification module (2) is provided with an air outlet (48) and a liquid replenishment port (49) at the top, and an air inlet (47) is connected through the side wall.

[0028] The design of the top air outlet, fluid replenishment port, and side wall air inlet of the heated humidification module significantly improves the convenience of daily operation and maintenance. The top-mounted fluid replenishment port allows medical staff or users to more easily replenish and check the humidification solution, while the top-mounted air outlet facilitates natural airflow and temperature and humidity control. The through-connection of the side wall air inlet ensures flexible connection between the humidification module and external air sources, making the overall system more adaptable to different environments and specific treatment requirements. This user-friendly design ultimately simplifies equipment operation, saves time during maintenance, and improves clinical efficiency.

[0029] Preferably, the heating and humidifying tank adopts a split structure, consisting of an upper part and a lower part. The lower part is a heating plate, and the upper part is the tank body. The heating plate and the tank body are combined by a silicone sealant.

[0030] The modular design, featuring silicone seals, greatly facilitates subsequent cleaning and maintenance. Compared to one-piece structures, which are difficult to disassemble and clean, and prone to internal dirt accumulation, this modular design allows medical personnel to easily open the humidifier canister for thorough disinfection and cleaning, ensuring humidification quality and hygiene standards. Furthermore, this detachable structure facilitates independent replacement and upgrades of components, laying the foundation for meeting the needs of different applications and new technologies.

[0031] Preferably, the air inlet of the micro-positive pressure breathing mask is provided with several holes with diaphragms around it, and the thickness of the diaphragms is in the range of 0.1 to 0.8 mm.

[0032] The diaphragm on the hole is movable, opening or closing as the pressure inside the mask changes;

[0033] The diaphragm and mask are detachably connected.

[0034] Several perforations with diaphragms are designed around the air inlet of the micro-positive pressure breathing mask, allowing for more flexible and intelligent pressure adjustment within the mask. The diaphragms automatically open and close when the internal pressure of the mask changes, ensuring that the patient always receives relatively comfortable and stable micro-positive pressure support, avoiding discomfort and hypoxia caused by wearing the mask too tightly or creating a tight seal. Simultaneously, this detachable diaphragm design facilitates the selection and replacement of different diaphragm materials and thicknesses, providing diverse adjustment options to match the patient's facial contours, skin sensitivity, and treatment requirements, thus improving mask comfort and clinical application flexibility.

[0035] Preferably, the micro-positive pressure breathing mask is equipped with a pressure sensor, which is connected to the integrated device via a signal line; the pressure inside the micro-positive pressure breathing mask is set in the range of 4-25 cmH2O.

[0036] By incorporating a pressure sensor into the micro-positive pressure mask and connecting it to an integrated device, a real-time pressure monitoring and feedback control system is established. This allows medical staff or the intelligent control system to respond rapidly to changes in pressure within the mask, adjusting gas flow, concentration, and pressure accordingly. The pressure range can be flexibly set between 4-25 cmH2O to meet different needs, from assisted breathing for mild cases to non-invasive ventilation. This precise monitoring and rapid response not only improves the effectiveness and safety of treatment but also provides patients with a more flexible and personalized treatment experience.

[0037] Preferably, the micro-positive pressure breathing mask is equipped with a turbulence structure; the turbulence structure is a baffle with comb-like teeth; the comb-like baffle is detachable; the adapter of the mask air inlet is rotatable 360 ​​degrees; the outlet gas flow rate of the oxygen outlet pipeline is adjustable from 0.1 to 30 L / min; the high-flow oxygen therapy port has an outlet gas flow rate adjustable from 20 to 80 L / min and an oxygen concentration adjustable from 30% to 95%.

[0038] The introduction of a turbulence-inducing structure, a 360-degree rotating adapter, and adjustable flow and oxygen concentration output ports enables optimized airflow distribution and adaptability to various clinical scenarios. The turbulence-inducing structure ensures thorough mixing and distribution of the gas delivered to the patient within the mask, improving the uniformity and comfort of the inhaled gas. The 360-degree rotating design facilitates operation by healthcare professionals in confined spaces or specific patient positions. The adjustable flow and oxygen concentration output range allows clinicians to flexibly match the needs of different treatment stages, further enhancing the device's clinical adaptability and treatment accuracy.

[0039] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0040] First, this invention achieves integrated functionality in its overall design, combining functions such as oxygen generation, heating and humidification, micro-positive pressure support, and high-flow delivery—traditionally requiring multiple devices—into one unit. This integrated solution significantly reduces the complexity of switching and connecting between devices, improving the ease of medical operation and work efficiency. It allows medical staff to more quickly upgrade from low-flow oxygen therapy to high-concentration oxygen therapy, or from non-invasive to invasive ventilation, based on changes in the patient's condition. Simultaneously, this highly integrated design effectively reduces the space required and maintenance costs in clinical applications, creating more user-friendly conditions for both hospitals and homes.

[0041] Secondly, this invention significantly improves the quality and comfort of the oxygen production process by organically combining a multi-stage silent structure, an oil-free compressor, and VPSA molecular sieve oxygen generation technology. On the one hand, multiple noise reduction measures and the centrally located buffer silencer effectively reduce noise interference, providing a quieter treatment experience for patients, medical staff, and even the home environment. On the other hand, an oxygen concentration of 93% ± 3% and a wide flow rate adjustment range (from 0.1 L / min to 80 L / min) ensure that the device can meet various clinical needs, from mild oxygen therapy to high-flow, non-invasive ventilation, while maintaining the stability and accuracy of oxygen concentration and flow rate even under high-flow conditions. This higher level of oxygen generation and output control adds flexibility and reliability to respiratory support therapy.

[0042] Finally, in the design of the micro-positive pressure ventilation mask and the heated humidification module, this invention emphasizes the comfort and practicality of human-machine interaction. Through the split humidification tank structure and detailed designs such as the top liquid inlet and side air inlets, maintenance and cleaning are more convenient, ensuring the long-term hygiene and normal operation of the device. The mask structure with a movable diaphragm can automatically adapt to changes in internal pressure, providing appropriate micro-positive pressure support without needing to be tightly fitted to the patient's face, thereby reducing discomfort and air leakage. Combined with a turbulence structure, a 360-degree rotatable interface, and adjustable flow and oxygen concentration output ports, the adaptability, comfort, and therapeutic effect of the device are comprehensively improved. In summary, this invention optimizes oxygen generation, humidification, micro-positive pressure ventilation, and multi-level oxygen therapy mode switching, providing an efficient, quiet, flexible, and comfortable integrated solution for clinical and home respiratory therapy. Attached Figure Description

[0043] Figure 1 This is a schematic diagram of the structure of a high-flow oxygen generator and oxygen therapy integrated machine according to Example 1;

[0044] Figure 2 This is a schematic diagram of the overall structure of the oxygen source in Example 1;

[0045] Figure 3 This is a schematic diagram of the cross-sectional structure of the oxygen source in Example 1;

[0046] Figure 4 This is a schematic diagram of the internal structure of a high-flow oxygen generator and oxygen therapy integrated machine according to Example 1;

[0047] Figure 5 This is a schematic diagram of the top structure of the high-flow-rate heated humidification component in Example 1;

[0048] Figure 6 This is a schematic diagram of the module relationship of the high-flow oxygen generator and oxygen therapy integrated machine in Example 2.

[0049] The attached diagram lists the components represented by each number as follows:

[0050] 1. Oxygen source; 2. High-flow heating and humidification assembly; 7. 93% oxygen outlet pipeline; 8. Nebulizer outlet pipeline; 9. Oxygen adaptive flow valve; 10. High-flow gas pipeline; 11. Oxygen and clean air mixing chamber; 13. Flow sensor; 14. Oxygen concentration sensor; 15. Pressure sensor; 16. Liquid level sensor; 17. Temperature and humidity sensor; 20. First oxygen source pipeline; 21. Second oxygen source pipeline; 25. Compressor; 26. Molecular sieve adsorption tower; 27. Multi-stage noise reduction structure; 28. Metal noise reduction cover; 35. Heating plate; 36. Tank body; 43. Oxygen therapy port; 44. Control panel; 45. Pipeline switching unit; 46. Air inlet; 47. Air inlet; 48. Air outlet; 49. Liquid replenishment port. Detailed Implementation Example 1

[0051] A high-flow oxygen generator and oxygen therapy integrated machine and a micro-positive pressure breathing mask, comprising:

[0052] Oxygen source 1, heating and humidification module 2, and micro-positive pressure breathing mask;

[0053] The oxygen source 1 is equipped with multiple solenoid valves, multiple pressure regulating valves 6, an oxygen outlet pipeline 7, and an atomizing outlet pipeline 8.

[0054] The heating and humidification module 2 is equipped with an oxygen adaptive flow valve 9, a high-flow gas pipeline 10, an oxygen and clean air mixing chamber 11, a clean air booster turbine fan 12, a flow sensor 13, an oxygen concentration sensor 14, a first pressure sensor 15, a liquid level sensing device 16, a temperature and humidity sensor 17, a heated breathing pipeline 18, and a micro-positive pressure breathing mask with a second pressure sensor 19.

[0055] The oxygen source 1 gas pipeline includes a first oxygen source pipeline 20, a second oxygen source pipeline 21, a merging pipeline 22, and a return pipeline 23;

[0056] The first oxygen source pipeline 20 or the second oxygen source pipeline 21 is branched to form an oxygen gas pipeline to the oxygen outlet pipeline 7 and the nebulizer pipeline 8; the oxygen gas pipeline and the nebulizer pipeline are respectively equipped with solenoid valves; the heating and humidification module 2 is connected to the oxygen source 1 and the oxygen adaptive flow valve 9 through the confluence pipeline 22; the micro positive pressure breathing mask is connected to the high flow outlet through the heating pipe 24.

[0057] By integrating the three core components—oxygen source, heating and humidification module, and micro-positive pressure mask—into a single system, oxygen preparation, humidification, pressure regulation, and supply are organically unified. This integrated design eliminates the need for multiple devices to work together, significantly reducing the burden on medical personnel switching between different treatment protocols. Furthermore, because the system's components are pre-designed to be mutually compatible, the accuracy and stability of oxygen flow, concentration, and humidity control are greatly improved, contributing to providing more personalized and continuous high-quality oxygen therapy services for various respiratory patients.

[0058] Specifically, the oxygen concentration produced by the oxygen source 1 is 93%±3%, and the flow rate is 10-30L.

[0059] High-flow-rate oxygen therapy provides a reliable gas supply. Compared to traditional oxygen therapy equipment, which struggles to maintain a stable high concentration of oxygen at high flow rates, this approach maintains a relatively constant high concentration level over a wide flow range. This not only meets the flexible oxygen concentration needs of different patients during periods of worsening or remission but also avoids frequent equipment changes and parameter adjustments in real-world clinical settings, thus improving the efficiency of healthcare workers and the patient's treatment experience.

[0060] Specifically, the oxygen source 1 compresses air into the molecular sieve adsorption tower 26 through the silent oil-free compressor 25, and produces oxygen with a concentration of 93% through the pressure swing adsorption principle. A multi-stage noise reduction structure 27 is used for noise reduction.

[0061] This system employs a silent, oil-free compressor and the pressure swing adsorption (VPSA) principle using molecular sieves to produce high-concentration oxygen, achieving significant results in noise reduction and ensuring stable oxygen concentration. The oil-free compressor reduces lubricant contamination of the gas path and maintenance requirements, thereby improving the cleanliness of the oxygen source and the reliability of the equipment. Simultaneously, the molecular sieve adsorption tower, under VPSA conditions, can more efficiently separate nitrogen from the air, improving oxygen purity and collection efficiency. Furthermore, the introduction of a multi-stage noise reduction structure effectively solves the problem of excessive noise from traditional oxygen generators, causing discomfort to patients and medical staff, creating a quieter and more comfortable environment for clinical and home oxygen therapy.

[0062] Specifically, the silent oil-free compressor 25 is placed inside the metal muffler 28, and the solenoid valve and cooling fan are placed inside the secondary muffler 33; the negative pressure exhaust pipe of the solenoid valve is connected to the central buffer muffler, and the central buffer muffler is connected to the first compressor negative pressure cylinder 29 through a pipe and the second compressor negative pressure cylinder 30 is connected to the nitrogen exhaust muffler 31 through a pipe.

[0063] The centrally located buffer silencer is a cavity with an internal gas buffer structure. The cavity contains one or more gas buffer channels, sound-absorbing cotton, and several air inlets and outlets 32.

[0064] The centrally located buffer silencer and nitrogen exhaust silencer 31 are placed inside the metal silencer cover 28.

[0065] The multi-layered noise reduction and gas buffering structure design significantly improves the quietness and airflow stability of the entire oxygen generation system. Utilizing a combined structure of a metal silencer, a secondary silencer, and a central buffer silencer combined with a nitrogen exhaust silencer, noise from the compressor, valve switching, and negative pressure exhaust processes can be effectively eliminated in stages. Simultaneously, the gas buffer chamber and sound-absorbing cotton within the central buffer silencer provide a stable environment for gas flow, reducing airflow pulsation and pressure fluctuations. This not only improves environmental quietness but also makes gas output more uniform, thereby enhancing oxygen supply quality and patient comfort.

[0066] Specifically, the bottom of the molecular sieve adsorption tower 26 is equipped with an oxygen backflushing switching solenoid valve and an anti-backflow diaphragm.

[0067] Adding an oxygen backflushing switching solenoid valve and an anti-backflow diaphragm to the bottom of the molecular sieve adsorption tower can improve the regeneration efficiency and service life of the molecular sieve during oxygen production. Under normal operating conditions, the molecular sieve adsorption tower needs to periodically remove adsorbed nitrogen and water molecules to restore adsorption performance. The oxygen backflushing and anti-backflow structure effectively prevents reverse gas flow from causing molecular sieve contamination or reduced adsorption efficiency. This improvement helps maintain long-term high-efficiency oxygen production capacity, reduces equipment maintenance and replacement costs, extends equipment life, and thus provides users with a stable, economical, and long-lasting high-quality oxygen source.

[0068] Specifically, the top of the heating and humidification module 2 is provided with an air outlet 48 and a liquid replenishment port 49, and an air inlet 47 is connected through the side wall.

[0069] The design of the top air outlet, fluid replenishment port, and side wall air inlet of the heated humidification module significantly improves the convenience of daily operation and maintenance. The top-mounted fluid replenishment port allows medical staff or users to more easily replenish and check the humidification solution, while the top-mounted air outlet facilitates natural airflow and temperature and humidity control. The through-connection of the side wall air inlet ensures flexible connection between the humidification module and external air sources, making the overall system more adaptable to different environments and specific treatment requirements. This user-friendly design ultimately simplifies equipment operation, saves time during maintenance, and improves clinical efficiency.

[0070] Specifically, the heating and humidifying tank adopts a split structure, consisting of an upper part and a lower part. The lower part is a heating plate 35, and the upper part is a tank body 36. The heating plate 35 and the tank body 36 are combined by a silicone sealant 37.

[0071] The modular design, featuring silicone seals, greatly facilitates subsequent cleaning and maintenance. Compared to one-piece structures, which are difficult to disassemble and clean, and prone to internal dirt accumulation, this modular design allows medical personnel to easily open the humidifier canister for thorough disinfection and cleaning, ensuring humidification quality and hygiene standards. Furthermore, this detachable structure facilitates independent replacement and upgrades of components, laying the foundation for meeting the needs of different applications and new technologies.

[0072] Specifically, the air inlet of the micro-positive pressure breathing mask is provided with several holes with diaphragms around it, and the thickness of the diaphragms is in the range of 0.1 to 0.8 mm.

[0073] The diaphragm on the hole is movable, opening or closing as the pressure inside the mask changes;

[0074] The diaphragm and mask are detachably connected.

[0075] Several perforations with diaphragms are designed around the air inlet of the micro-positive pressure breathing mask, allowing for more flexible and intelligent pressure adjustment within the mask. The diaphragms automatically open and close when the internal pressure of the mask changes, ensuring that the patient always receives relatively comfortable and stable micro-positive pressure support, avoiding discomfort and hypoxia caused by wearing the mask too tightly or creating a tight seal. Simultaneously, this detachable diaphragm design facilitates the selection and replacement of different diaphragm materials and thicknesses, providing diverse adjustment options to match the patient's facial contours, skin sensitivity, and treatment requirements, thus improving mask comfort and clinical application flexibility.

[0076] Specifically, the micro-positive pressure breathing mask is equipped with a pressure sensor, which is connected to the integrated device via a signal line; the pressure inside the micro-positive pressure breathing mask is set in the range of 4-25 cmH2O.

[0077] By incorporating a pressure sensor into the micro-positive pressure mask and connecting it to an integrated device, a real-time pressure monitoring and feedback control system is established. This allows medical staff or the intelligent control system to respond rapidly to changes in pressure within the mask, adjusting gas flow, concentration, and pressure accordingly. The pressure range can be flexibly set between 4-25 cmH2O to meet different needs, from assisted breathing for mild cases to non-invasive ventilation. This precise monitoring and rapid response not only improves the effectiveness and safety of treatment but also provides patients with a more flexible and personalized treatment experience.

[0078] Specifically, the micro-positive pressure breathing mask is equipped with a turbulence structure; the turbulence structure is a baffle with comb-like teeth; the comb-like baffle is detachable; the adapter 42 of the mask air inlet is rotatable 360 ​​degrees; the outlet gas flow rate of the oxygen outlet pipeline 7 is adjustable from 0.1 to 30 L / min; the high-flow oxygen therapy port 43 has an outlet gas flow rate adjustable from 20 to 80 L / min and an oxygen concentration adjustable from 30% to 95%.

[0079] The introduction of a turbulence-inducing structure, a 360-degree rotating adapter, and adjustable flow and oxygen concentration output ports enables optimized airflow distribution and adaptability to various clinical scenarios. The turbulence-inducing structure ensures thorough mixing and distribution of the delivered gas within the mask, improving the uniformity and comfort of the inhaled gas. The 360-degree rotating design facilitates operation by healthcare professionals in confined spaces or specific patient positions. The adjustable flow and oxygen concentration output range (0.1–30 L / min and 20–80 L / min adjustable, 30%–95% concentration adjustable) allows clinicians to flexibly match the needs of different treatment stages, further improving the device's clinical adaptability and treatment accuracy.

[0080] This embodiment provides a high-flow oxygen generator and its micro-positive pressure breathing mask. These devices are oxygen therapy equipment. Traditional low-flow oxygen therapy devices typically provide an oxygen flow rate of less than 15 L / min, far below the patient's actual peak inspiratory flow rate. The insufficient flow is compensated by the inhaled air, resulting in severe dilution of the oxygen concentration and an unknown specific concentration. The high-flow oxygen generator, however, can deliver an oxygen flow rate of 20–80 L / min or higher. Due to its high flow rate, generally exceeding the patient's peak inspiratory flow rate, the patient does not inhale ambient air, allowing for better control of the oxygen concentration. This achieves the goals of delivering a stable concentration of oxygen, flushing the dead space in the upper airway, and generating a certain level of continuous positive airway pressure (CPAP), while also being well-tolerated by the patient.

[0081] However, existing high-flow oxygen therapy devices on the market still have a series of problems. These devices cannot provide oxygen themselves and require an external oxygen source, relying on centralized oxygen supply or an external oxygen concentrator. When using an external oxygen source, the device cannot be moved and can only be used where there is an oxygen outlet. Furthermore, they lack separate interfaces for 93% oxygen inhalation and nebulization. Single-mode oxygen therapy often cannot cover most people requiring oxygen therapy. Simultaneously, when conventional 93% oxygen inhalation therapy or drug nebulization therapy is needed, there is no corresponding function, requiring additional treatment equipment.

[0082] like Figure 1As shown, to address the problems of existing high-flow oxygen therapy devices, this embodiment provides an integrated high-flow oxygen generator and oxygen therapy unit with a combined oxygen source. It includes an oxygen source, a high-flow oxygen therapy port, a 93% oxygen outlet, a nebulizer port, a clean air inlet, and a heating and humidification module. The oxygen source compresses air and produces oxygen through pressure swing adsorption. The external high-flow oxygen therapy port is used for direct high-flow oxygen therapy. The external 93% oxygen outlet and nebulizer port can be used for conventional oxygen inhalation and nebulization therapy, respectively.

[0083] like Figure 2 As shown, in this embodiment, the oxygen source is specifically used to produce oxygen, and the oxygen source is specifically composed of a first oxygen source and a second oxygen source connected by pipelines. The oxygen source can produce oxygen in different ways, including but not limited to molecular sieve oxygen production. Molecular sieve oxygen production refers to separating and producing oxygen from the air at room temperature using the adsorption properties of molecular sieves.

[0084] Function mode switching can be specifically set on the display control unit, thereby enabling function selection. Optionally, internally, gas path switching is achieved through pipeline switching using solenoid valves.

[0085] like Figure 3 As shown, in one embodiment, the high-flow oxygen therapy device further includes a control unit. Specifically, the control unit is electrically connected to both the oxygen source and the tubing switching unit. The control unit controls the switching of the tubing switching unit to select the functional mode. Simultaneously, the control unit controls the oxygen source to produce oxygen. It should be noted that the tubing switching unit may not require control by the control unit; it can be manually adjusted to switch between the 93% oxygen inhalation interface and the nebulization interface. The control unit, acting as the command center of the entire device, can detect signals and coordinate control between various units, thereby ensuring the normal operation of the device.

[0086] like Figure 4As shown, in one embodiment, the integrated machine further includes a sensor, which is electrically connected to the control unit. The sensor detects the oxygen concentration, flow rate, temperature, and humidity in the pipeline and generates signals accordingly, which are sent to the control unit. The control unit judges and automatically adjusts the oxygen adaptive flow valve based on the signals. Optionally, oxygen concentration and flow rate sensors are installed on the first and second oxygen sources to monitor the oxygen concentration and flow rate of the first and second oxygen sources, respectively. Optionally, oxygen concentration, flow rate, and pressure sensors are also installed on the connection pipeline between the air mixing chamber and the high-flow heating and humidification module, and are used to detect these parameters by means including but not limited to detecting the gas pressure, flow rate, and oxygen concentration in the middle section of the pipeline. Optionally, temperature and humidity sensors are also installed on the connection pipeline between the high-flow heating and humidification module and the high-flow oxygen therapy port, and are used to detect these parameters by means including but not limited to detecting the gas temperature and humidity in the downstream pipeline. In other words, pressure sensors, flow sensors, and oxygen concentration sensors can be used.

[0087] In one implementation, the temperature, humidity, and oxygen concentration parameters of the high-flow oxygen therapy port can be specifically set in the control unit. The gas flow can also be specifically controlled in the control unit for the 93% oxygen outlet and the nebulizer port.

[0088] like Figure 5 As shown, in one embodiment, the heating and humidification module specifically includes an air inlet, an air outlet, and a liquid replenishment port. The air inlet and outlet can be curved or straight. Example 2

[0089] like Figure 6 In this embodiment, an intelligent control algorithm and corresponding formulas and control parameters are introduced to achieve precise control of the oxygen therapy system under high flow conditions in terms of oxygen concentration, flow rate, temperature and humidity, micro-positive pressure, and airflow distribution. Through interconnected modules, a complete closed-loop hardware and software control system is formed.

[0090] It includes an oxygen source module, which uses components such as an oil-free compressor and a molecular sieve adsorption tower to extract high-purity oxygen, and uses solenoid valves and pressure regulating valves to achieve basic control of oxygen concentration and flow rate.

[0091] It includes a heating and humidification module, which heats and humidifies the oxygen and clean air output from the oxygen generation module to achieve the target temperature and humidity requirements.

[0092] It includes a micro-positive pressure breathing mask module, which maintains optimized micro-positive pressure and airflow distribution within the mask through adjustable diaphragm pores and a turbulence structure under suitable temperature, humidity and oxygen concentration.

[0093] It includes a sensing and data acquisition module, including an oxygen concentration sensor, a flow sensor, a temperature and humidity sensor, a pressure sensor, and a liquid level sensor, used to acquire key system parameters in real time.

[0094] It includes a control and algorithm module, equipped with a microprocessor (MCU) and memory, for running control algorithms to achieve closed-loop control of the above modules, including oxygen concentration and flow control, temperature and humidity control, and micro-positive pressure and airflow distribution optimization linkage control.

[0095] Through the above overall technical framework, this system can stably maintain the set oxygen concentration and flow rate under high flow conditions, and accurately control the temperature and humidity under high flow conditions to keep the gas within a suitable range (Algorithm 2). On the basis of meeting the above conditions, the system can improve patient comfort and treatment effect by adjusting the internal structure of the mask to maintain micro-positive pressure and optimize airflow distribution.

[0096] This includes an oxygen concentration and flow rate coupled control algorithm: ensuring that both oxygen concentration and flow rate simultaneously meet clinically set target values ​​in high-flow-rate environments. To this end, the flow rate coupled control algorithm employs a dual-loop PID-like control strategy.

[0097] The real-time oxygen concentration C(t) and flow rate F(t) measured by the sensor are obtained.

[0098] The oxygen concentration C(t) and flow rate F(t) are compared with the target values, and the error values ​​are calculated.

[0099] Based on the error value, the concentration control quantity and flow control quantity are calculated separately by a PID-like controller.

[0100] By controlling the speed of the oil-free compressor, the opening degree of the solenoid valve, and the speed of the booster fan, the actual oxygen concentration and the flow rate are made to approach the target value.

[0101] This algorithm solves the technical problem of maintaining stable oxygen concentration and flow rate at high flow rates simultaneously, allowing subsequent temperature, humidity, and micro-positive pressure adjustments to be carried out on a relatively stable gas basis.

[0102] The formulas for calculating concentration control and flow control quantities include:

[0103]

[0104]

[0105] Where C(t) is the current oxygen concentration; C set Target oxygen concentration; F(t) is the current flow rate; F set (Target traffic); K C,P , K C,I , K C,D , KF,P , K F,I , K F,D These gain parameters are used to adjust the controller response characteristics. The P term addresses the current error, the I term eliminates the steady-state error, and the D term predicts the error change trend; uc(t) is the concentration control quantity, and uF(t) is the flow control quantity.

[0106] The uC(t) control signal will be output to the solenoid valve and compressor drive circuit through the MCU to adjust the oxygen concentration.

[0107] The uF(t) control signal is output to the booster fan and pressure regulating valve to achieve precise flow control.

[0108] In practice, these control quantities will be converted into PWM signals, digital I / O ports, or analog signals to drive the actuator to operate, so that C(t) and F(t) can quickly and stably reach the set value under high flow conditions.

[0109] It also includes a fine-grained humidity and temperature control algorithm, which obtains the current gas temperature and humidity values ​​from the sensor and compares them with the set target temperature and humidity to obtain the error.

[0110] By using a PID control strategy, the gas temperature and humidity are brought close to the set values ​​through the adjustment of the heating plate power and the liquid replenishment rate.

[0111] The gain is adaptively adjusted according to the actual flow rate to ensure that the set temperature and humidity can be reached quickly and stably even under high flow conditions.

[0112] The calculation formulas for adjusting the heating plate power and liquid replenishment rate include:

[0113]

[0114]

[0115] Where T(t) is the current measured gas temperature; T set H(t) is the target gas temperature setpoint; H(t) is the current gas humidity measurement value; H set Set the humidity level for the target gas; P heat (t) represents the output value of the heating power control quantity; R liquid (t) represents the output value of the replenishment rate control; K T,P K T,I and K T,D For the proportional, integral, and derivative gains of the temperature control loop; K H,P, K H,I and K H,D For the proportional, integral, and derivative gains of the humidity control loop.

[0116] P heat(t) The power of the heating plate resistor is controlled by the PWM output, thereby changing the gas temperature.

[0117] R liquid (t) The opening time and frequency of the micro metering pump are controlled by pulse signals to increase or decrease the amount of water evaporated and adjust the humidity.

[0118] At the execution level, those skilled in the art can use industrial-grade heating plates and micro-pumps in conjunction with digital control devices to achieve this closed-loop regulation.

[0119] It also includes a linkage optimization algorithm that achieves micro-positive pressure and optimizes airflow distribution by adjusting the internal structure of the mask:

[0120] The pressure inside the mask is obtained from the pressure sensor and compared with the target slight positive pressure. If it is too low, the opening of the diaphragm pores is increased to allow more gas to enter the mask and reach the target pressure.

[0121] By comparing the airflow distribution index with the set value, if the airflow distribution is uneven, the airflow can be made uniform by changing the angle of the adapter and the position of the turbulence structure.

[0122] The calculation formulas for the output values ​​of diaphragm orifice opening control, adapter angle control, and turbulence structure position control include:

[0123] A hole (t)=A0+K P (P set -P mask (t))

[0124] θ(t) = θ0 + K θ (U flow,set -U flow (t))

[0125] S disturb (t)=S0+K S (U flow,set -U flow (t))

[0126] P mask (t) Current pressure measurement inside the mask; P set Set the target micro-positive pressure value; U flow (t) represents the current airflow distribution uniformity index; U flow,set Target airflow distribution uniformity setpoint; A hole (t) is the output value of the diaphragm orifice opening control; θ(t) is the output value of the adapter angle control; S disturb (t) represents the output value of the position control variable of the disturbance structure; A0, θ0, S0 are the initial values; K P ,K θ ,K SGain parameters adjusted to correspond to diaphragm apertures, adapters, and turbulence structures.

[0127] According to A hole (t) The control module drives a stepper motor or servo mechanism to change the diaphragm aperture opening, increasing or decreasing the amount of gas introduced into the mask to maintain a slight positive pressure.

[0128] According to θ(t) and S disturb (t) The control module changes the angle of the adapter and the position of the spoiler through servo motors and linear actuators, so that the airflow is more evenly distributed in the mask, improving the patient's oxygenation comfort and treatment effect.

[0129] This second embodiment provides a complete technical route from the overall architecture to the specific algorithms and formulas, and explains the principle, parameter meaning and output execution method of the formulas: Based on the above description, those skilled in the art can select appropriate sensors (such as medical-grade oxygen concentration sensors, MEMS flow sensors, digital temperature and humidity sensors, pressure sensors) and actuators (oil-free compressors, multi-stage solenoid valves, PWM controlled heating plates, micro metering pumps, stepper motor driven diaphragms and turbulence structures) at the hardware level.

[0130] At the software level, technicians can use C / C++ to implement PID control and lookup table functions on the MCU platform, and periodically execute the algorithm in timer interrupts to calculate and update parameters, and then control the relevant actuators through interfaces such as GPIO, PWM, I2C, SPI, and UART.

[0131] Through repeated debugging and calibration, suitable K parameters (gain) and initial values ​​(A0, θ0, S0) are obtained. In practical use, medical staff can set C according to changes in the patient's condition. set F set T set H set P set and U flow,set The system automatically adjusts relevant control parameters in real time through three algorithms during operation, achieving comprehensive control of high flow rate, high concentration, suitable temperature and humidity, stable micro-positive pressure, and uniform airflow distribution, providing high-quality support for clinical and home respiratory therapy.

Claims

1. A high-flow oxygen generator and oxygen therapy integrated machine, characterized in that, include: Oxygen source (1) and heating and humidification module (2); The oxygen source (1) is equipped with multiple solenoid valves, multiple pressure regulating valves (6), oxygen outlet pipeline (7), and atomizing outlet pipeline (8) on its oxygen gas pipeline. The heating and humidification module (2) is equipped with an oxygen adaptive flow valve (9), a high flow gas pipeline (10), an oxygen and clean air mixing chamber (11), a clean air booster turbine fan (12), a flow sensor (13), an oxygen concentration sensor (14), a first pressure sensor (15), a liquid level sensing device (16), a temperature and humidity sensor (17), a heated breathing pipeline (18), and a micro positive pressure breathing mask with a second pressure sensor (19). The oxygen-generating gas pipeline includes a first oxygen source pipeline (20), a second oxygen source pipeline (21), a merging pipeline (22), and a return pipeline (23); The first oxygen source pipeline (20) or the second oxygen source pipeline (21) is branched and connected to the oxygen outlet pipeline (7) and the nebulizer pipeline (8); the nebulizer pipeline is equipped with a solenoid valve, and the heating and humidification module (2) is connected to the oxygen source (1) and the oxygen adaptive flow valve (9) through the confluence pipeline (22); the micro positive pressure breathing mask is connected to the high flow outlet through the heating pipe (24); The heating and humidification module (2) adopts a split structure, consisting of an upper part and a lower part. The lower part is a heating plate (35), and the upper part is a tank body (36). The micro-positive pressure breathing mask has several holes with diaphragms around the air inlet of the mask; The diaphragm on the hole is movable, opening or closing as the pressure inside the mask changes; The micro-positive pressure breathing mask is equipped with a turbulence structure; the turbulence structure is a baffle with comb teeth; the comb teeth baffle is detachable; the adapter (42) of the mask air inlet is rotatable 360 ​​degrees. The high-flow oxygen generator and oxygen therapy integrated machine includes an oxygen concentration and flow rate coupled control algorithm, wherein the flow rate coupled control algorithm includes: Acquire the current oxygen concentration and flow rate measured by the flow sensor (13) and the oxygen concentration sensor (14); Compare the current oxygen concentration and flow rate with the target values ​​respectively, and calculate the error value; Calculate the concentration control amount and flow control amount based on the error value; By controlling the speed of the silent oil-free compressor (25), the opening degree of the solenoid valve and the speed of the clean air booster turbine (12), the current oxygen concentration and the flow rate are brought close to the target value. The formulas for calculating concentration control and flow control quantities include: Where C(t) is the current oxygen concentration; C set The target value for oxygen concentration; F(t) is the current flow rate; F set K represents the target value for the flow rate. C,P , K C,I , K C,D , K F,P , K F,I , K F,D These gain parameters are used to adjust the response characteristics. The P term addresses the current error, the I term eliminates the steady-state error, and the D term predicts the error change trend. uc(t) is the concentration control quantity, and uF(t) is the flow control quantity. Wherein, γ is the integral time variable, representing any intermediate moment within the time interval from 0 to t; C(γ) is the oxygen concentration value at time γ; and F(γ) is the flow rate value at time γ. The high-flow oxygen generator and oxygen therapy integrated machine also includes a humidity and temperature fine control algorithm, which obtains the current gas temperature and humidity values ​​from the temperature and humidity sensor (17) and compares them with the set target temperature and humidity to obtain the error; By using a PID control strategy, the gas temperature and humidity are brought close to the set target temperature and humidity through the adjustment of the heating plate power and liquid replenishment rate. The gain is adaptively adjusted according to the current flow rate to ensure that the set temperature and humidity can be reached quickly and stably even under high flow conditions. The calculation formulas for adjusting the heating plate power and liquid replenishment rate include: Where T(t) is the current gas temperature; T set H(t) represents the set target temperature; H(t) represents the current gas humidity value; H set The target humidity is set; P heat (t) represents the output value of the heating power control quantity; R liquid (t) represents the output value of the replenishment rate control; K T,P K T,I and K T,D For the proportional, integral, and derivative gains of the temperature control loop; K H,P K H,I and K H,D Here, γ represents the proportional, integral, and derivative gain of the humidity control loop; γ is the integral time variable, representing any intermediate moment within the time interval from 0 to t; T(γ) is the gas temperature value at time γ; and H(γ) is the gas humidity value at time γ. P heat (t) The power of the heating plate resistor is controlled by the PWM output, thereby changing the gas temperature; R liquid (t) Humidity is adjusted by increasing or decreasing the amount of water evaporated via pulse signals; The high-flow oxygen generator and oxygen therapy device also includes a linkage optimization algorithm that adjusts the internal structure of the mask to achieve micro-positive pressure and optimize airflow distribution. The pressure inside the mask is obtained from the second pressure sensor and compared with the target micro-positive pressure. If it is too low, the opening is increased to allow more gas to enter the mask and achieve the target micro-positive pressure. By comparing the airflow distribution index with the set value, if the airflow distribution is uneven, the airflow can be made uniform by changing the angle of the adapter and the position of the turbulence structure. The calculation formulas for the output values ​​of the orifice opening control, the adapter angle control, and the turbulence structure position control include: A hole (t)=A0+K P (P set −P mask (t)) θ(t)=θ0+K θ (U flow,set −U flow (t)) S disturb (t)=S0+K S (U flow,set −U flow (t)) P mask (t) Current pressure measurement inside the mask; P set Set the target micro-positive pressure value; U flow (t) represents the current airflow distribution uniformity index; U flow,set Set the target airflow distribution uniformity value; A hole (t) is the output value of the orifice opening control; θ(t) is the output value of the adapter angle control; S disturb (t) represents the output value of the position control quantity of the turbulence structure; A0, θ0, S0 represent the orifice opening, adapter angle, and initial value of the turbulence structure position; K P ,K θ ,K S Gain parameters adjusted to correspond to orifice opening, adapter angle, and position of turbulence structure; According to A hole (t) Control the heating and humidification module to drive the servo mechanism to change the orifice opening, increase or decrease the amount of gas introduced into the mask, so as to maintain a slight positive pressure; According to θ(t) and S disturb (t) The heating and humidification control module changes the angle of the adapter and the position of the turbulence structure through a servo motor and a linear actuator, so that the airflow is more evenly distributed in the mask, improving the patient's oxygenation comfort and treatment effect.

2. The high-flow oxygen generator and oxygen therapy integrated machine according to claim 1, characterized in that, The oxygen source (1) produces oxygen with an oxygen concentration of 93% ± 3% and a flow rate of 10-30L.

3. The high-flow oxygen generator and oxygen therapy integrated machine according to claim 2, characterized in that, The oxygen source (1) compresses air into the molecular sieve adsorption tower (26) through a silent oil-free compressor (25), and produces oxygen with a concentration of 93% through the pressure swing adsorption principle. A multi-stage noise reduction structure (27) is used for noise reduction.

4. The high-flow oxygen generator and oxygen therapy integrated machine according to claim 3, characterized in that, The silent oil-free compressor (25) is placed inside a metal muffler (28), and the solenoid valve and cooling fan are placed inside a secondary muffler (33). The negative pressure exhaust pipe of the solenoid valve is connected to a central buffer muffler, and the central buffer muffler is connected to the first compressor negative pressure cylinder (29) and the second compressor negative pressure cylinder (30) is connected to the nitrogen exhaust muffler (31) through a pipe. The centrally located buffer silencer is a cavity with an internal gas buffer structure. The cavity contains one or more gas buffer channels, sound-absorbing cotton, and several air inlets and outlets (32). The centrally located buffer silencer and nitrogen exhaust silencer (31) are placed inside the metal silencer cover (28).

5. A high-flow oxygen generator and oxygen therapy integrated machine according to claim 4, characterized in that, The bottom of the molecular sieve adsorption tower (26) is equipped with an oxygen backflushing switching solenoid valve and an anti-backflow membrane.

6. A high-flow oxygen generator and oxygen therapy integrated machine according to claim 5, characterized in that, The heating and humidification module (2) is provided with an air outlet (48) and a liquid replenishment port (49) at the top, and an air inlet (47) is connected through the side wall.

7. A high-flow oxygen generator and oxygen therapy integrated machine according to claim 6, characterized in that, The heating plate (35) and the tank body (36) are combined by a silicone seal (37).

8. A high-flow oxygen generator and oxygen therapy integrated machine according to claim 1, characterized in that, The thickness of the diaphragm ranges from 0.1 to 0.8 mm; The diaphragm and mask are detachably connected.

9. A high-flow oxygen generator and oxygen therapy integrated machine according to claim 8, characterized in that, The micro-positive pressure breathing mask is equipped with a second pressure sensor, which is connected to the integrated device via a signal line; the pressure inside the micro-positive pressure breathing mask is set in the range of 4-25 cmH2O.

10. A high-flow oxygen generator and oxygen therapy integrated machine according to claim 9, characterized in that, The outlet gas flow rate of the oxygen outlet pipeline (7) is adjustable from 0.1 to 30 L / min.

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