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

Abstract

The invention relates to the field of oxygen generators, in particular to a high-flow oxygen generation and oxygen therapy all-in-one machine and a micro-positive pressure breathing mask, and the high-flow oxygen generation and oxygen therapy all-in-one machine comprises an oxygen generation source, a heating and humidifying module and the micro-positive pressure breathing mask; a plurality of electromagnetic valves, a plurality of pressure regulating valves, an oxygen outlet pipeline and an atomization opening pipeline are respectively arranged on an oxygen production gas pipeline of the oxygen production source; the heating 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 charging turbofan, a flow sensor, an oxygen concentration sensor, a first pressure sensor, a liquid level sensing device, a temperature and humidity sensor, a heating breathing pipeline and a micro-positive pressure breathing mask with a second pressure sensor; the oxygen generation source gas pipeline comprises a first oxygen source pipeline, a second oxygen source pipeline, a convergence pipeline and a blowback pipeline; a gas pipeline of the first oxygen source pipeline or the second oxygen source pipeline is branched to form an oxygen pipeline to an oxygen outlet pipeline and an atomization opening pipeline; and the oxygen pipeline and the atomizing port pipeline are respectively provided with an electromagnetic valve.

Description

Technical Field

[0001] The invention relates to the field of oxygen generators, in particular to a high-flow oxygen generator and oxygen therapy integrated machine and a micro-positive pressure breathing mask. Background Art

[0002] The main methods of producing oxygen are: VPSA (PSA, VPSA, VSA) oxygen production, membrane separation oxygen production, water electrolysis oxygen production and chemical oxygen production. VPSA oxygen production uses VPSA special molecular sieves to selectively adsorb impurities such as nitrogen, carbon dioxide and water in the air, and desorbs the molecular sieve under vacuum conditions to produce high-purity oxygen in a cycle. Usually, an air compressor is used to extract air as a raw material, and the molecular sieve can adsorb nitrogen under specific conditions to obtain high-purity oxygen. With the development of industry, the demand for oxygen is increasing. The traditional PSA oxygen production has defects such as high power, excessive pressure in the molecular sieve tank, high noise, unstable flow, and concentration that does not meet the requirements. Although the ordinary VPSA oxygen generator can solve the problem of high pressure in the tank, the flow and concentration are still unstable under high flow conditions, and the noise is still high.

[0003] At the same time, according to the severity of the patient's respiratory disease, respiratory therapy generally adopts low-flow oxygen therapy, high-concentration oxygen therapy, non-invasive mechanical ventilation and invasive mechanical ventilation treatment plans in turn; invasive mechanical ventilation, non-invasive mechanical ventilation, high-concentration oxygen therapy and low-flow oxygen therapy treatment plans are adopted in turn during the recovery period. However, the respiratory therapy equipment in hospitals currently has relatively single functions, and different respiratory therapy plans require the replacement of treatment equipment, which is very troublesome. At present, the high-flow oxygen therapy methods used in hospitals and families basically use high-flow respiratory humidification therapy devices with external oxygen sources. There are two devices and two systems, and the coordination and convenience need to be further improved. In addition, the high-flow respiratory humidification therapy devices currently on the market basically use fully enclosed, high positive pressure respiratory masks. When using them, patients have poor adaptability during oxygen therapy, and need to wear masks tightly to prevent air leakage from affecting the treatment effect.

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

[0005] Traditional oxygen generators often have difficulty maintaining a stable flow rate while maintaining a sufficiently high oxygen concentration when outputting at high flow rates. Since the oxygen production capacity of the molecular sieve adsorption tower fluctuates with changes in airflow conditions, control methods such as compressor speed and solenoid valve switching are difficult to adjust in a timely and effective manner in real-time changing high-load conditions without precise collaborative algorithms. As a result, the oxygen concentration of the output gas often fails to reach the set value, or the flow rate fluctuates, affecting the continuity and reliability of clinical treatment.

[0006] There are significant difficulties in controlling gas temperature and humidity under high flow conditions. As the gas flow increases, the traditional method of simply heating with a heating plate and replenishing fluids and humidifying is difficult to achieve precise control under rapidly changing flow conditions. When the airflow is large, insufficient heat and water supply will cause low temperature and humidity; if too much is supplied, the temperature and humidity will be too high or unable to respond quickly to changes. This problem is particularly prominent when the conditions and ventilation modes of different patients change, which brings a lot of additional manual adjustment and maintenance work to medical staff, increasing the difficulty of clinical operations.

[0007] In the prior art, most masks are relatively fixed in design or can only rely on simple pressure adjustment methods to maintain a slight positive pressure inside the mask. The problem of airflow distribution becomes more prominent under high-flow and long-term treatment conditions. In traditional designs, the internal structure of the mask is fixed, and there is no means to flexibly adjust the spoiler structure, adapter angle, and diaphragm aperture. As a result, it is difficult to maintain precise slight positive pressure inside the mask, and it is even more impossible to fine-tune the airflow distribution according to the patient's facial features, breathing pattern changes, and treatment progress, which affects the patient's wearing comfort and treatment effect. Summary of the invention

[0008] The purpose of the present invention is to provide a high-flow oxygen generator and oxygen therapy integrated machine and a micro-positive pressure breathing mask to solve the technical problems raised in the above-mentioned background technology.

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

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

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

[0012] The oxygen-generating gas pipeline of the oxygen-generating source is respectively provided with a plurality of solenoid valves, a plurality of pressure regulating valves, an oxygen outlet pipeline, and an atomizing outlet pipeline;

[0013] The heating and humidification module is provided with an oxygen adaptive flow valve, a high-flow gas pipeline, an oxygen and clean air mixing chamber, a clean air booster turbo blower, a flow sensor, an oxygen concentration sensor, a first pressure sensor, a liquid level sensing device, a temperature and humidity sensor, a heating 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 blowback pipeline;

[0015] The first oxygen source pipeline or the second oxygen source pipeline gas pipeline is branched to form 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 solenoid valves, the heating and humidification module is connected to the oxygen source and the oxygen adaptive flow valve through a converging pipeline; the micro positive pressure breathing mask is connected to the high flow outlet through a heating pipe.

[0016] The three core components of oxygen source, heated humidification module and micro-positive pressure mask are integrated into the same system to achieve the organic unity of oxygen preparation, humidification, pressure regulation and supply. Through this kind of integrated design, users no longer need multiple devices to work together, which greatly reduces the burden of medical staff switching equipment between different treatment plans. At the same time, because the components within the system have been designed to match each other, the accuracy and stability of oxygen flow, concentration and humidity control can be greatly improved, which helps to provide more personalized, continuous and high-quality oxygen therapy services for various respiratory patients.

[0017] Preferably, the oxygen concentration of the oxygen produced by the oxygen production source (1) is 93%±3%, and the flow rate is 10-30L.

[0018] High-flow oxygen therapy provides a reliable gas source. Compared with traditional oxygen therapy equipment, which is difficult to stably maintain high-concentration oxygen output at a high flow rate, this solution can maintain a relatively constant high-concentration level within a larger flow range. This not only meets the flexible needs of different patients for oxygen concentration when their condition worsens or improves, but also avoids frequent equipment replacement and parameter debugging in actual clinical environments, which helps to improve the work efficiency of medical staff and the treatment experience of patients.

[0019] Preferably, the oxygen source compresses air into a molecular sieve adsorption tower through a silent oil-free compressor, produces oxygen with a concentration of 93% through the pressure swing adsorption principle, and uses a multi-stage silencer structure to perform noise reduction processing.

[0020] The use of silent oil-free compressors and molecular sieve pressure swing adsorption principles to produce high-concentration oxygen has achieved remarkable results in reducing noise and ensuring the stability of oxygen concentration. Since the oil-free compressor reduces the pollution and maintenance requirements of lubricating oil to the gas line, the cleanliness of the oxygen source and the reliability of the equipment are improved. At the same time, the molecular sieve adsorption tower can more efficiently separate nitrogen from the air under VPSA conditions, improving the purity and collection efficiency of oxygen. In this process, the introduction of a multi-stage silencer structure effectively solves the problem of high noise in traditional oxygen production equipment and discomfort to patients and medical staff, creating a quieter and more comfortable atmosphere for clinical and home oxygen therapy environments.

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

[0022] The central buffer silencer is a cavity with a gas buffer structure inside, and the cavity has one or more gas buffer airways, silencer cotton and several inlet and outlet ports;

[0023] The central buffer silencer and nitrogen exhaust silencer are placed in the metal silencer cover.

[0024] The multi-level silencer and gas buffer structure design significantly improves the quietness and airflow stability of the entire oxygen production system. The metal silencer cover, secondary silencer cover, and the combined structure of the central buffer silencer and the nitrogen exhaust silencer can effectively eliminate the noise during the compressor, valve switching, and negative pressure exhaust in a graded manner. At the same time, the gas buffer cavity and silencer cotton set in the central buffer silencer can provide a stable environment for gas flow and reduce airflow pulsation and pressure fluctuations. It not only improves the quietness of the environment, but also makes the gas output more uniform, thereby improving the oxygen supply quality and patient comfort.

[0025] Preferably, a switching solenoid valve for oxygen back-blowing and a backflow prevention diaphragm are provided at the bottom of the molecular sieve adsorption tower (26).

[0026] Adding an oxygen back-blowing switching solenoid valve and a backflow prevention diaphragm at the bottom of the molecular sieve adsorption tower can improve the regeneration efficiency and service life of the molecular sieve during the oxygen production process. Under normal operating conditions, the molecular sieve adsorption tower needs to regularly remove the adsorbed nitrogen and water molecules to restore the adsorption performance. The oxygen back-blowing and backflow prevention structure can effectively prevent the gas from flowing in reverse and causing molecular sieve contamination or reduced adsorption efficiency. This improvement helps maintain long-term high-efficiency oxygen production capacity, reduce equipment maintenance and replacement costs, and extend the service life of the equipment, thereby providing users with a stable, economical and long-lasting high-quality oxygen source.

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

[0028] The design of the air outlet, liquid inlet and side wall air inlet on the top of the heated humidification module greatly improves the convenience of daily operation and maintenance. By setting the liquid inlet on the top, medical staff or users can more easily replenish and check the humidification liquid, and the layout of the air outlet on the top is also conducive to the natural derivation of airflow and temperature and humidity control. The through connection of the side wall air inlet can ensure the flexible connection between the humidification module and the external air source, making the overall system more capable of dealing with different environments and specific treatment requirements. This humanized design ultimately makes the operation of the equipment simpler, maintenance more time-saving, and improves clinical use efficiency.

[0029] Preferably, the heating and humidifying tank adopts a split structure and is divided into an upper part and a lower part, the lower part is a heating plate, and the upper part is a tank body, and the heating plate and the tank body are combined by a silicone seal.

[0030] The split structure combined with silicone seals creates great convenience for later cleaning and maintenance. Compared with the problem that the integrated structure is not easy to disassemble and clean, and the internal dirt is difficult to completely remove, the split design allows medical staff to easily open the humidification tank, thoroughly disinfect and clean the interior, and ensure the humidification quality and hygiene standards. At the same time, this detachable structure is also conducive to the independent replacement and upgrading of components, laying the foundation for meeting different occasions and new technology applications.

[0031] Preferably, a plurality of holes with diaphragms are provided around the air inlet of the micro-positive pressure breathing mask, and the thickness of the diaphragm is in the range of 0.1 to 0.8 mm;

[0032] The diaphragm on the hole is a movable setting, which opens or closes as the pressure in the mask changes;

[0033] The diaphragm and the mask are detachably connected.

[0034] Several holes with diaphragms are set around the air inlet of the micro-positive pressure breathing mask to make the pressure adjustment inside the mask more flexible and intelligent. The diaphragm automatically opens and closes when the pressure inside the mask changes, ensuring that the patient always obtains relatively comfortable and stable micro-positive pressure support, avoiding discomfort and hypoxia caused by wearing the mask too tightly and tightly sealing. At the same time, this detachable diaphragm design facilitates the selection and replacement of different diaphragm materials and thicknesses, providing diversified adjustment space to match the patient's facial contour, skin sensitivity and treatment requirements, which helps to improve the comfort of the mask and the flexibility of clinical application.

[0035] Preferably, the micro-positive pressure breathing mask is provided with a pressure sensor, and the pressure sensor is connected to the integrated machine via a signal line; the pressure within the micro-positive pressure breathing mask is set in the range of 4-25 cmH2O.

[0036] The pressure sensor is introduced into the micro-positive pressure mask and connected to the all-in-one machine to build a real-time pressure monitoring and feedback control system. This enables medical staff or intelligent control systems to respond quickly to changes in pressure in the mask and adjust the gas flow, concentration and pressure accordingly. The pressure range can be flexibly set between 4-25cmH2O to meet different needs from mild assisted breathing to non-invasive ventilation therapy. 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, a spoiler structure is provided in the micro-positive pressure breathing mask; the spoiler structure is a baffle with comb teeth; the comb teeth baffle is detachable; the adapter of the mask air inlet is 360-degree rotatable; the outlet gas flow rate of the oxygen outlet pipeline is adjustable from 0.1 to 30 L / min; the outlet gas flow rate of the high-flow oxygen therapy port is adjustable from 20 to 80 L / min, and the oxygen concentration is adjustable from 30% to 95%.

[0038] The introduction of a spoiler structure, a 360-degree rotatable adapter, and an adjustable flow and oxygen concentration output port make it possible to achieve a more optimized airflow distribution and adapt to a variety of clinical scenarios. The spoiler structure enables the gas delivered to the patient to be fully mixed and distributed in the mask, improving the uniformity and comfort of the inhaled gas. The 360-degree rotatable design makes it easier for medical staff to operate on patients in a small space or in a special position. The adjustable flow and oxygen concentration output range creates conditions for clinical staff to flexibly match the needs of different treatment stages, further improving the clinical adaptability and treatment accuracy of the equipment.

[0039] Compared with the prior art, the present invention has the following beneficial effects:

[0040] First of all, the present invention realizes integrated integration in the overall design, integrating functions such as oxygen production, heated humidification, micro-positive pressure support and high-flow delivery that traditionally require multiple devices to complete. This integrated solution significantly reduces the tediousness of switching and connecting between devices, improves the simplicity and work efficiency of medical operations, and enables medical staff to more quickly upgrade from low-flow oxygen therapy to high-concentration oxygen therapy, or from non-invasive to invasive ventilation according to changes in the condition. At the same time, this highly integrated design effectively reduces the occupied space and maintenance costs in clinical application scenarios, creating more friendly conditions for hospital and home use.

[0041] Secondly, the present invention greatly improves the quality and comfort of the oxygen production process through the organic combination of multi-stage silent structure, oil-free compressor and VPSA molecular sieve oxygen production technology. On the one hand, multiple silencing measures and the setting of the central buffer silencer effectively reduce noise interference, providing a quieter treatment experience for patients, medical staff and even home environments. On the other hand, the oxygen concentration of 93%±3% and a wide flow adjustment range (from 0.1L / min to 80L / min) ensure that the equipment can cope with a variety of clinical needs from mild oxygen therapy to high flow, non-invasive ventilation, and still maintain the stability and accuracy of oxygen concentration and flow under high flow conditions. This higher level of oxygen production and output control adds flexibility and reliability to respiratory support therapy.

[0042] Finally, in the design of the micro-positive pressure breathing mask and the heated humidification module, the present invention focuses on the comfort and practicality of human-computer interaction. Through the split humidification tank structure and the detailed design of the top insufflation port, the side wall air inlet, etc., maintenance and cleaning are more convenient, ensuring the long-term hygiene and normal operation of the equipment. The mask structure with a movable diaphragm can automatically adapt to internal pressure changes, and can provide appropriate micro-positive pressure support without being tightly attached to the patient's face, thereby reducing discomfort and air leakage problems. Combined with the spoiler structure, 360-degree rotatable interface, and adjustable flow and oxygen concentration output ports, the adaptability, comfort and treatment effect of the equipment are comprehensively improved. In summary, the present invention is optimized around multiple aspects such as oxygen production, humidification, micro-positive pressure ventilation and multi-stage oxygen therapy mode switching, providing an efficient, quiet, flexible and comfortable integrated solution for clinical and home respiratory therapy. BRIEF DESCRIPTION OF THE DRAWINGS

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

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

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

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

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

[0048] Figure 6 Schematic diagram of the module relationship of the high-flow oxygen generator and oxygen therapy integrated machine in Example 2

[0049] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0050] 1. Oxygen source; 2. High-flow heating and humidification component; 3. Micro-positive pressure breathing mask; 7. 93% oxygen outlet pipeline; 8. Atomizer 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 sensing device; 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 silencer structure; 28. Metal silencer 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. Fluid inlet. DETAILED DESCRIPTION

[0051] Embodiment 1:

[0052] A high-flow oxygen generator and oxygen therapy integrated machine and a micro-positive pressure breathing mask, comprising:

[0053] Oxygen source 1, heating and humidification module 2 and micro positive pressure breathing mask 3;

[0054] The oxygen-generating gas pipeline of the oxygen-generating source 1 is respectively provided with a plurality of solenoid valves, a plurality of pressure regulating valves 6, an oxygen outlet pipeline 7, and an atomizing outlet pipeline 8;

[0055] The heating and humidification module 2 is provided 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 turbo blower 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 heating breathing pipeline 18 and a micro-positive pressure breathing mask 3 with a second pressure sensor 19;

[0056] The oxygen source 1 gas pipeline includes a first oxygen source pipeline 20, a second oxygen source pipeline 21, a converging pipeline 22 and a blowback pipeline 23;

[0057] The first oxygen source pipeline 20 or the second oxygen source pipeline 21 is divided into an oxygen gas pipeline to form an oxygen outlet pipeline 7 and an atomization outlet pipeline 8; solenoid valves are respectively provided on the oxygen gas pipeline and the atomization outlet pipeline; the heating and humidification module 2 is connected to the oxygen source 1 and the oxygen adaptive flow valve 9 through a merging pipeline 22; the micro positive pressure breathing mask 3 is connected to the high flow outlet through a heating pipe 24.

[0058] The three core components of oxygen source, heated humidification module and micro-positive pressure mask are integrated into the same system to achieve the organic unity of oxygen preparation, humidification, pressure regulation and supply. Through this kind of integrated design, users no longer need multiple devices to work together, which greatly reduces the burden of medical staff switching equipment between different treatment plans. At the same time, because the components within the system have been designed to match each other, the accuracy and stability of oxygen flow, concentration and humidity control can be greatly improved, which helps to provide more personalized, continuous and high-quality oxygen therapy services for various respiratory patients.

[0059] Specifically, the oxygen concentration of the oxygen produced by the oxygen production source 1 is 93%±3%, and the flow rate is 10-30L.

[0060] High-flow oxygen therapy provides a reliable gas source. Compared with traditional oxygen therapy equipment, which is difficult to stably maintain high-concentration oxygen output at a high flow rate, this solution can maintain a relatively constant high-concentration level within a larger flow range. This not only meets the flexible needs of different patients for oxygen concentration when their condition worsens or improves, but also avoids frequent equipment replacement and parameter debugging in actual clinical environments, which helps to improve the work efficiency of medical staff and the treatment experience of patients.

[0061] Specifically, the oxygen source 1 compresses air into the molecular sieve adsorption tower 26 through the silent oil-free compressor 25, produces oxygen with a concentration of 93% through the pressure swing adsorption principle, and uses a multi-stage silencer structure 27 to perform noise reduction processing.

[0062] The use of silent oil-free compressors and molecular sieve pressure swing adsorption (VPSA) principles to produce high-concentration oxygen has achieved remarkable results in reducing noise and ensuring the stability of oxygen concentration. Since the oil-free compressor reduces the pollution and maintenance requirements of lubricating oil to the gas line, the cleanliness of the oxygen source and the reliability of the equipment are improved. At the same time, the molecular sieve adsorption tower can more efficiently separate nitrogen from the air under VPSA conditions, improving the purity and collection efficiency of oxygen. In this process, the introduction of a multi-stage silencer structure effectively solves the problem of high noise in traditional oxygen production equipment and discomfort to patients and medical staff, creating a quieter and more comfortable atmosphere for clinical and home oxygen therapy environments.

[0063] Specifically, the silent oil-free compressor 25 is placed in a metal silencer cover 28, and the solenoid valve and the cooling fan are placed in a secondary silencer cover 33; the negative pressure exhaust pipeline of the solenoid valve is connected to the central buffer silencer, and the central buffer silencer is connected to the first compressor negative pressure cylinder 29 through a pipeline, and the second compressor negative pressure cylinder 30 is connected to the nitrogen exhaust silencer 31 through a pipeline;

[0064] The central buffer silencer is a cavity with a gas buffer structure inside, and the cavity has one or more gas buffer airways, silencer cotton and a plurality of inlet and outlet ports 32;

[0065] The central buffer silencer and the nitrogen exhaust silencer 31 are placed in the metal silencer cover 28 .

[0066] The multi-level silencer and gas buffer structure design significantly improves the quietness and airflow stability of the entire oxygen production system. The metal silencer cover, secondary silencer cover, and the combined structure of the central buffer silencer and the nitrogen exhaust silencer can effectively eliminate the noise during the compressor, valve switching, and negative pressure exhaust in a graded manner. At the same time, the gas buffer cavity and silencer cotton set in the central buffer silencer can provide a stable environment for gas flow and reduce airflow pulsation and pressure fluctuations. It not only improves the quietness of the environment, but also makes the gas output more uniform, thereby improving the oxygen supply quality and patient comfort.

[0067] Specifically, a switching solenoid valve and an anti-backflow diaphragm for oxygen backblowing are provided at the bottom of the molecular sieve adsorption tower 26 .

[0068] Adding an oxygen back-blowing switching solenoid valve and a backflow prevention diaphragm at the bottom of the molecular sieve adsorption tower can improve the regeneration efficiency and service life of the molecular sieve during the oxygen production process. Under normal operating conditions, the molecular sieve adsorption tower needs to regularly remove the adsorbed nitrogen and water molecules to restore the adsorption performance. The oxygen back-blowing and backflow prevention structure can effectively prevent the gas from flowing in reverse and causing molecular sieve contamination or reduced adsorption efficiency. This improvement helps maintain long-term high-efficiency oxygen production capacity, reduce equipment maintenance and replacement costs, and extend the service life of the equipment, thereby providing users with a stable, economical and long-lasting high-quality oxygen source.

[0069] Specifically, the top of the heating and humidification module 2 is provided with an air outlet 48 and a liquid replenishing port 49 , and the side wall is connected with an air inlet 47 .

[0070] The design of the air outlet, liquid inlet and side wall air inlet on the top of the heated humidification module greatly improves the convenience of daily operation and maintenance. By setting the liquid inlet on the top, medical staff or users can more easily replenish and check the humidification liquid, and the layout of the air outlet on the top is also conducive to the natural derivation of airflow and temperature and humidity control. The through connection of the side wall air inlet can ensure the flexible connection between the humidification module and the external air source, making the overall system more capable of dealing with different environments and specific treatment requirements. This humanized design ultimately makes the operation of the equipment simpler, maintenance more time-saving, and improves clinical use efficiency.

[0071] Specifically, the heating and humidifying tank adopts a split structure and is divided into an upper part and a lower part, the lower part is a heating plate 35 , and the upper part is a tank body part 36 . The heating plate 35 and the tank body part 36 are combined by a silicone seal 37 .

[0072] The split structure combined with silicone seals creates great convenience for later cleaning and maintenance. Compared with the problem that the integrated structure is not easy to disassemble and clean, and the internal dirt is difficult to completely remove, the split design allows medical staff to easily open the humidification tank, thoroughly disinfect and clean the interior, and ensure the humidification quality and hygiene standards. At the same time, this detachable structure is also conducive to the independent replacement and upgrading of components, laying the foundation for meeting different occasions and new technology applications.

[0073] Specifically, a plurality of holes 40 with diaphragms 39 are provided around the air inlet 38 of the micro-positive pressure breathing mask, and the thickness of the diaphragm is in the range of 0.1 to 0.8 mm;

[0074] The diaphragm 39 on the hole 40 is movable and opens or closes as the pressure in the mask changes;

[0075] The diaphragm 39 is detachably connected to the mask.

[0076] Several holes with diaphragms are set around the air inlet of the micro-positive pressure breathing mask to make the pressure adjustment inside the mask more flexible and intelligent. The diaphragm automatically opens and closes when the pressure inside the mask changes, ensuring that the patient always obtains relatively comfortable and stable micro-positive pressure support, avoiding discomfort and hypoxia caused by wearing the mask too tightly and tightly sealing. At the same time, this detachable diaphragm design facilitates the selection and replacement of different diaphragm materials and thicknesses, providing diversified adjustment space to match the patient's facial contour, skin sensitivity and treatment requirements, which helps to improve the comfort of the mask and the flexibility of clinical application.

[0077] Specifically, the micro-positive pressure breathing mask is provided with a pressure sensor, and the pressure sensor is connected to the integrated machine through a signal line; the pressure in the micro-positive pressure breathing mask is set in the range of 4-25cmH2O.

[0078] The pressure sensor is introduced into the micro-positive pressure mask and connected to the all-in-one machine to build a real-time pressure monitoring and feedback control system. This enables medical staff or intelligent control systems to respond quickly to changes in pressure in the mask and adjust the gas flow, concentration and pressure accordingly. The pressure range can be flexibly set between 4-25cmH2O to meet different needs from mild assisted breathing to non-invasive ventilation therapy. 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.

[0079] Specifically, a spoiler structure 41 is provided in the micro-positive pressure breathing mask; the spoiler structure 41 is a baffle with comb teeth; the comb teeth baffle is detachable; the adapter 42 of the mask air inlet 38 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 of 20 to 80 L / min, and an oxygen concentration of 30%-95%.

[0080] The introduction of a spoiler structure, a 360-degree rotatable adapter, and an adjustable flow and oxygen concentration output port make it possible to achieve a more optimized airflow distribution and adapt to a variety of clinical scenarios. The spoiler structure enables the gas delivered to the patient to be fully mixed and distributed in the mask, improving the uniformity and comfort of the inhaled gas. The 360-degree rotating design makes it convenient for medical staff to operate on patients in a small space or in a special position. The adjustable flow and oxygen concentration output range (adjustable from 0.1 to 30L / min and 20 to 80L / min, adjustable concentration from 30% to 95%) creates conditions for clinical staff to flexibly match the needs of different treatment stages, further improving the clinical adaptability and treatment accuracy of the equipment.

[0081] The present embodiment provides a high-flow oxygen generator and oxygen therapy integrated machine and its micro-positive pressure breathing mask. The high-flow oxygen generator and oxygen therapy integrated machine and its micro-positive pressure breathing mask belong to oxygen therapy equipment. The oxygen flow rate provided by the traditional low-flow oxygen therapy device is generally less than 15L / min, which is far lower than the actual inspiratory peak flow rate of the patient. The insufficient flow rate will be supplemented by the air inhaled at the same time, so the oxygen concentration will be severely diluted and the specific concentration is unknown. The oxygen flow rate of the high-flow oxygen generator and oxygen therapy integrated machine can reach 20 to 80L / Min or more. Due to the high flow rate, the high-flow oxygen generator and oxygen therapy integrated machine is generally greater than the patient's inspiratory peak flow rate. The patient will not inhale the surrounding air, and the oxygen concentration can be better controlled to achieve the purpose of transmitting a stable concentration of oxygen, flushing the patient's upper airway dead space, and generating a certain end-expiratory positive airway pressure (CPAP, Continuous Positive Airway Pressure), and the patient has good tolerance.

[0082] However, there are still a series of problems with the existing high-flow oxygen therapy devices on the market. High-flow oxygen therapy devices cannot provide oxygen by themselves and require an external oxygen source, relying on external centralized oxygen supply or an external oxygen generator. When using an external oxygen source to supply oxygen, the oxygen therapy device cannot be moved and can only be used in places with oxygen outlets. There is no separate 93% oxygen oxygen inhalation interface and nebulization interface. Single-mode oxygen therapy often cannot cover most groups that require oxygen therapy. At the same time, when conventional 93% oxygen oxygen inhalation therapy or drug nebulization therapy is required, there is no corresponding function and additional treatment equipment is required.

[0083] like Figure 1As shown, in order to solve the problems of the existing high-flow oxygen therapy apparatus, this embodiment provides an integrated high-flow oxygen production and oxygen therapy machine with an integrated oxygen source. It includes an oxygen production 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 production source is specifically used to compress air and produce oxygen through pressure swing adsorption. The external high-flow oxygen therapy port is specifically used for direct high-flow oxygen therapy. The external 93% oxygen outlet and the nebulizer port can be used for conventional oxygen inhalation and nebulization therapy, respectively.

[0084] like Figure 2 As shown, in this embodiment, the oxygen source is specifically used to prepare oxygen, and the oxygen source is specifically composed of a first oxygen source and a second oxygen source connected by pipeline. The oxygen source can be produced in different ways, including but not limited to molecular sieve oxygen production, which refers to the separation and production of oxygen from air using the adsorption characteristics of molecular sieves at room temperature.

[0085] Function mode switching can be specifically set on the display control unit to achieve the selection of the function. Optionally, the internal pipeline is switched and the electromagnetic valve is specifically used to switch the gas circuit.

[0086] like Figure 3 As shown, in one embodiment, the high-flow oxygen therapy device further includes a control unit, and the control unit is specifically electrically connected to the oxygen source and the pipeline switching unit, respectively. The control unit is specifically used to control the switching of the pipeline switching unit to achieve the selection of the functional mode, and the control unit is specifically used to control the oxygen source to produce oxygen. It should be noted that the pipeline switching unit may not need to be specifically controlled by the control unit, and the pipeline switching unit may be manually adjusted to achieve the switching when using the oxygen inhalation interface of 93% oxygen and the atomization interface. The control unit specifically serves as the command center of the entire all-in-one machine, which can realize the detection of signals and the coordinated control between the various units, thereby ensuring the normal operation of the all-in-one machine.

[0087] like Figure 4As shown, in one embodiment, the integrated machine also includes a sensor, the sensor is specifically electrically connected to the control unit, the sensor is used to detect the oxygen concentration, flow, temperature, and humidity in the pipeline and generate a signal to send to the control unit specifically, and the control unit specifically judges and automatically adjusts the oxygen adaptive flow valve specifically according to the signal. Optionally, the oxygen concentration and flow sensors are arranged on the first oxygen source and the second oxygen source, and the oxygen concentration and flow of the first oxygen source and the second oxygen source are monitored respectively. Optionally, the oxygen concentration, flow, and pressure sensors are arranged on the connecting pipeline between the air mixing chamber and the high-flow heating and humidification module specifically, and the detection is carried out by including but not limited to detecting the gas pressure, flow, and oxygen concentration in the middle section of the pipeline. Optionally, the temperature and humidity sensors are placed on the high-flow heating and humidification module and the high-flow oxygen therapy port. The detection is carried out by including but not limited to detecting the gas temperature and humidity in the rear section of the pipeline. That is, pressure sensors, flow sensors, oxygen concentration sensors, etc. can be used.

[0088] In one embodiment, the control unit can be used to set the temperature, humidity, and oxygen concentration parameters of the high-flow oxygen therapy port. The control unit can be used to control the on / off of the gas at the 93% oxygen outlet and the atomization port.

[0089] like Figure 5 As shown, in one embodiment, the heating and humidification module is specifically provided with an air inlet, a air outlet, and a liquid infusion port. The air inlet and outlet can be curved or straight.

[0090] Embodiment 2:

[0091] like Figure 6 In this embodiment, an intelligent control algorithm and corresponding formulas and control parameters are introduced to achieve accurate control of oxygen concentration, flow rate, temperature and humidity, micro-positive pressure and airflow distribution of the oxygen therapy system under high flow conditions. Through interrelated modules, a complete closed-loop control system of software and hardware is formed:

[0092] It includes an oxygen source module, which realizes high-purity oxygen extraction through components such as oil-free compressors and molecular sieve adsorption towers, and achieves basic control of oxygen concentration and flow through solenoid valves and pressure regulating valves.

[0093] It includes a heating and humidification module, which heats and humidifies the oxygen and clean air output from the oxygen production module to achieve the target temperature and humidity requirements.

[0094] It includes a micro-positive pressure breathing mask module, which maintains the micro-positive pressure and optimization of airflow distribution in the mask through adjustable diaphragm holes and spoiler structures under suitable temperature, humidity and oxygen concentration.

[0095] It includes a sensing detection 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, which are used to obtain key system parameters in real time.

[0096] It includes a control and algorithm module, equipped with a microprocessor (MCU) and memory, which are used to run the control algorithm 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.

[0097] Through the above overall technical framework, this system can stably maintain the set oxygen concentration and flow under high flow conditions, and accurately control the temperature and humidity under high flow to keep the gas in an appropriate range at all times (Algorithm 2); on the basis of meeting the above conditions, the internal structure of the mask is adjusted to maintain a slight positive pressure and optimize the airflow distribution to improve patient comfort and treatment effects.

[0098] Including oxygen concentration and flow coupling control algorithm: to ensure that oxygen concentration and flow meet the clinical target values ​​at the same time in a high flow environment. To this end, the flow coupling control algorithm adopts a dual-loop PID-like control strategy:

[0099] Get the real-time oxygen concentration C(t) and flow rate F(t) measured by the sensor.

[0100] The oxygen concentration C(t) and flow rate F(t) are compared with the target values, and the error values ​​are calculated.

[0101] According to the error value, the concentration control amount and flow control amount are calculated respectively through the PID-like controller.

[0102] By controlling the speed of the oil-free compressor, the opening of the solenoid valve and the speed of the booster fan, the actual oxygen concentration approaches the target value and the flow value approaches the target value.

[0103] This algorithm solves the technical problem that it is difficult to maintain stable oxygen concentration and flow rate at high flow rates at the same time, allowing subsequent temperature, humidity and micro-positive pressure adjustments to be carried out on the basis of relatively stable gas.

[0104] The calculation formulas for concentration control amount and flow control amount include:

[0105]

[0106]

[0107] Where, C(t) is the current oxygen concentration; C set is the target oxygen concentration; F(t) is the current flow rate; F set is the target flow); 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 solves 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 amount, and uF(t) is the flow control amount.

[0108] The uC(t) control signal will be output to the solenoid valve and compressor drive circuit through the MCU to adjust the oxygen concentration.

[0109] The uF(t) control signal is output to the booster fan and pressure regulating valve to achieve precise control of the flow rate.

[0110] In practice, these control quantities will be converted into PWM signals, digital IO ports or analog signals to drive the actuator to make C(t) and F(t) reach the set values ​​quickly and stably under high flow conditions.

[0111] It also includes a humidity and temperature fine 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.

[0112] Using PID control strategy, the gas temperature and humidity are brought close to the set values ​​by adjusting the heating plate power and the liquid replenishment rate.

[0113] 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 under high flow conditions.

[0114] The calculation formulas for adjusting the heating plate power and the liquid filling rate include:

[0115]

[0116]

[0117] Where T(t) is the current gas temperature measurement value; T set is the target gas temperature setting value; H(t) is the current gas humidity measurement value; H set is the target gas humidity setting value; P heat (t) is the output value of heating power control; R liquid (t) is the output value of the fluid replenishment rate control; K T,P , K T,I and K T,D is the proportional, integral and differential gain of the temperature control loop; K H,P, , K H,I and K H,D are the proportional, integral and differential gains of the humidity control loop.

[0118] P heat(t) The gas temperature is changed by controlling the power of the heater resistor via PWM output.

[0119] 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 evaporated water and adjust the humidity.

[0120] At the implementation level, technicians in this field can use industrial-grade heating plates and micro pumps in conjunction with digital control devices to achieve this closed-loop regulation.

[0121] It also includes a linkage optimization algorithm that adjusts the internal structure of the mask to achieve micro-positive pressure and optimize airflow distribution:

[0122] The pressure inside the mask obtained from the pressure sensor is compared with the target micro-positive pressure. If it is lower, the diaphragm hole opening is increased to allow more gas to enter the mask and reach the target pressure.

[0123] By comparing the airflow distribution index with the set value, if the airflow is unevenly distributed, the airflow is evenly distributed by changing the adapter angle and the position of the spoiler structure.

[0124] The calculation formulas for the diaphragm hole opening control output value, the adapter angle control output value, and the spoiler structure position control output value include:

[0125] A hole (t)=A0+K P (P set −P mask (t))

[0126] θ(t)=θ0+K θ (U flow,set −U flow (t))

[0127] S disturb (t)=S0+K S (U flow,set −U flow (t))

[0128] P mask (t) Current pressure measurement value in the mask; P set is the target slightly positive pressure setting value; U flow (t) is the current air flow distribution uniformity index; U flow,set Target air flow distribution uniformity setting value; A hole (t) is the output value of the diaphragm hole opening control quantity; θ(t) is the output value of the adapter angle control quantity; S disturb (t) is the output value of the spoiler structure position control quantity; A0, θ0, S0 are the initial values; K P ,K θ ,K SIt is the gain parameter adjusted according to the diaphragm hole, adapter and spoiler structure.

[0129] According to A hole (t) The control module drives the stepper motor or servo mechanism to change the diaphragm hole opening, increase or decrease the amount of gas entering the mask to maintain a slight positive pressure.

[0130] According to θ(t) and S disturb (t) The control module changes the adapter angle and spoiler position through the servo motor and linear actuator, making the airflow more evenly distributed in the mask, improving the patient's oxygen comfort and treatment effect.

[0131] This second embodiment provides a complete technical route from the overall architecture to the specific algorithms and formulas (, and explains the principle of the formula, the meaning of the parameters and the output execution method: 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-dosing pumps, diaphragms driven by stepper motors and spoiler structures) at the hardware level based on the above description.

[0132] At the software level, technicians can use C / C++ to implement PID control and table lookup functions on the MCU platform, and periodically execute algorithms in timed interrupts to calculate and update parameters, and then control related actuators through interfaces such as GPIO, PWM, I2C, SPI, and UART.

[0133] Through repeated debugging and calibration, the appropriate K parameter (gain) and initial value (A0, θ0, S0) are obtained. In actual use, medical staff can set C according to the patient's condition. set 、F set , T set , H set , P set and U flow,set During operation, the system automatically adjusts the relevant control quantities in real time through three algorithms, achieving comprehensive control of high flow, 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 and a micro-positive pressure breathing mask, characterized in that: include: Oxygen source (1), heating and humidification module (2) and micro positive pressure breathing mask (3); The oxygen-generating gas pipeline of the oxygen-generating source (1) is respectively provided with a plurality of solenoid valves, a plurality of pressure regulating valves (6), an oxygen outlet pipeline (7), and an atomization outlet pipeline (8); The heating and humidification module (2) is provided 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 heating breathing pipeline (18) and a micro-positive pressure breathing mask (3) having a second pressure sensor (19); The oxygen source (1) gas pipeline comprises a first oxygen source pipeline (20), a second oxygen source pipeline (21), a merging pipeline (22) and a blowback pipeline (23); The gas pipeline of the first oxygen source pipeline (20) or the second oxygen source pipeline (21) is branched to form an oxygen gas pipeline to an oxygen outlet pipeline (7) and an atomization outlet pipeline (8); solenoid valves are respectively provided on the oxygen gas pipeline and the atomization outlet pipeline; the heating and humidification module (2) is connected to the oxygen source (1) and the oxygen adaptive flow valve (9) through a merging pipeline (22); and the micro-positive pressure breathing mask (3) is connected to the high flow outlet through a heating pipe (24).

2. A high-flow oxygen generator and oxygen therapy integrated machine and a micro-positive pressure breathing mask according to claim 1, characterized in that: The oxygen concentration of the oxygen produced by the oxygen production source (1) is 93%±3%, and the flow rate is 10-30L.

3. A high-flow oxygen generator and oxygen therapy integrated machine and a micro-positive pressure breathing mask according to claim 2, characterized in that: The oxygen source (1) compresses air through a silent oil-free compressor (25) and enters a molecular sieve adsorption tower (26), and produces oxygen with a concentration of 93% through the pressure swing adsorption principle, and uses a multi-stage silencer structure (27) to perform noise reduction processing.

4. A high-flow oxygen generator and oxygen therapy integrated machine and a micro-positive pressure breathing mask according to claim 3, characterized in that: The silent oil-free compressor (25) is placed in a metal silencer cover (28), and the solenoid valve and the cooling fan are placed in a secondary silencer cover (33); the negative pressure exhaust pipeline of the solenoid valve is connected to the central buffer silencer, and the central buffer silencer is connected to the first compressor negative pressure cylinder (29) and the second compressor negative pressure cylinder (30) through a pipeline and connected to the nitrogen exhaust silencer (31) through a pipeline; The central buffer silencer is a cavity with a gas buffer structure inside, and the cavity has one or more gas buffer airways, silencer cotton and a plurality of air inlets and outlets (32); The central buffer silencer and the nitrogen exhaust silencer (31) are placed in the metal silencer cover (28).

5. A high-flow oxygen generator and oxygen therapy integrated machine and a micro-positive pressure breathing mask according to claim 4, characterized in that: A switching solenoid valve for oxygen back-blowing and a backflow prevention diaphragm are arranged at the bottom of the molecular sieve adsorption tower (26).

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

7. A high-flow oxygen generator and oxygen therapy integrated machine and a micro-positive pressure breathing mask according to claim 6, characterized in that: The heating and humidifying tank adopts a split structure and is divided into an upper part and a lower part, the lower part is a heating plate (35), and the upper part is a tank body part (36), and the heating plate (35) and the tank body part (36) are combined by a silicone seal (37).

8. The high-flow oxygen generator and oxygen therapy integrated machine and micro-positive pressure breathing mask according to claim 1, characterized in that: A plurality of holes (40) with diaphragms (39) are arranged around the air inlet (38) of the micro-positive pressure breathing mask, and the thickness of the diaphragm is in the range of 0.1 to 0.8 mm; The diaphragm (39) on the hole (40) is movably arranged to open or close as the pressure in the mask changes; The diaphragm (39) is detachably connected to the mask.

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

10. A high-flow oxygen generator and oxygen therapy integrated machine and a micro-positive pressure breathing mask according to claim 9, characterized in that: A spoiler structure (41) is provided inside the micro-positive pressure breathing mask; the spoiler structure (41) is a baffle with comb teeth; the baffle with comb teeth is detachable; the adapter (42) of the mask air inlet (38) 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 outlet gas flow rate of the high-flow oxygen therapy port (43) is adjustable from 20 to 80 L / min, and the oxygen concentration is adjustable from 30% to 95%.

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