Nitric oxide generating device

Abstract

The invention provides a nitric oxide generating device, and relates to the technical field of medical instruments, the nitric oxide generating device comprises an air input module, a nitric oxide generating module and a harmful gas filtering module which are connected in sequence, the nitric oxide generating module comprises a high-voltage pulse arc generator and a reaction bin, and the output end of the air input module is connected with the air inlet end of the reaction bin; the two ends of the high-voltage pulse arc generator extend into the reaction bin to be connected with a negative electrode and a positive electrode, the high-voltage pulse arc generator is used for outputting voltage to electrolyze air between the negative electrode and the positive electrode so as to generate nitric oxide gas, and the gas outlet end of the reaction bin is connected with the harmful gas filtering module. The harmful gas filtering module filters harmful gas. Compared with a traditional method for storing and compressing the high-concentration nitric oxide gas based on a steel cylinder, the device generates the nitric oxide gas on site, high storage and transportation cost is avoided, and potential risks of the high-concentration nitric oxide steel cylinder in the transportation and use process are avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and in particular to a nitric oxide generating device. Background Art

[0002] Since the discovery of nitric oxide in blood vessels in 1979, scholars around the world have conducted extensive research on nitric oxide, many of which have shown that inhaled nitric oxide has a beneficial effect on the treatment of pulmonary hypertension in adults and children with respiratory and heart failure. In the treatment of newborns with acute pulmonary hypertension, it was found that inhaled nitric oxide can effectively improve oxygenation without causing systemic hypotension. As an important messenger molecule in the body, nitric oxide has important functions such as increasing vasodilation, promoting wound healing, and anti-bacterial and anti-inflammatory effects.

[0003] The most common nitric oxide delivery device in clinical practice is based on the storage of compressed high-concentration nitric oxide gas in cylinders. This method is not only costly and complicated to deliver, but also has certain risks during transportation and application of high-concentration nitric oxide cylinders. For most hospitals, the use of inhaled nitric oxide to treat neonatal diseases is one of the most expensive methods. A five-day inhaled nitric oxide treatment for a child with persistent pulmonary hypertension costs about $14,000, and the annual cost of nitric oxide treatment in the United States is about $200 million. In actual applications, the nitric oxide stored in the cylinder will also be gradually oxidized into more toxic nitrogen dioxide over time. Due to the relatively large equipment and complex operation of the traditional gas storage nitric oxide system, the widespread application of nitric oxide therapy in areas with relatively scarce supplies and outpatient clinics is limited.

[0004] In recent years, in order to solve these problems, many new methods of producing nitric oxide have been developed, such as nitrogen dioxide produced by N2O4, and then nitrogen dioxide to produce nitric oxide. Since the toxicity of nitrogen dioxide is five times that of nitric oxide, this requires a complex purification system, so this method is still not suitable for the treatment of inhaled nitric oxide gas. In addition, other methods of obtaining nitric oxide, such as thermal decomposition and acid hydrolysis, must go through separation, refining, compression and other processes. Not only are the processes complicated, but the raw materials are acidic and alkaline materials such as nitrous acid or dilute sulfuric acid, which are dangerous and not conducive to clinical application. Summary of the invention

[0005] The problem solved by the invention is: how to provide a nitric oxide generating device with lower cost, safer use, simpler operation and capable of ensuring the quality of output gas.

[0006] In order to solve the above problems, the present invention provides a nitric oxide generating device.

[0007] The present invention provides a nitric oxide generating device, comprising an air input module, a nitric oxide generating module and a harmful gas filtering module connected in sequence, the nitric oxide generating module comprising a high-voltage pulse arc generator and a reaction chamber, the reaction chamber is provided with an air inlet end and an air outlet end, the output end of the air input module is connected to the air inlet end, the air input module is used to input air into the reaction chamber, the two ends of the high-voltage pulse arc generator are connected with a negative electrode and a positive electrode, the negative electrode and the positive electrode are located in the reaction chamber, the high-voltage pulse arc generator is used to output a voltage to electrolyze the air between the negative electrode and the positive electrode to generate nitric oxide gas, the air outlet end is connected to the harmful gas filtering module, and the harmful gas filtering module is used to filter the gas to ensure that the output nitric oxide gas meets the standard.

[0008] Optionally, the straight line where the negative electrode and the positive electrode are located is parallel to the straight line where the air inlet end and the air outlet end are located.

[0009] Optionally, the cathode of the electrode is close to the air inlet end.

[0010] Optionally, the harmful gas filtering module includes a filter, a retention bin, a cooling bin and an air dryer connected in sequence, the filter is connected to the gas outlet, the filter is provided with soda lime, the soda lime is used to remove nitrogen dioxide gas in the filter, a heater is provided at the bottom of the retention bin, the heater is used to heat the gas entering the retention bin at high temperature, thereby removing ozone gas in the gas, the cooling bin is used to reduce the temperature of the gas entering the cooling bin, and the air dryer is used to dry the gas entering the air dryer.

[0011] Optionally, a magnetic stirrer is further provided in the retention chamber, and the stirrer is used for stirring, thereby strengthening the combination of N ions and O ions entering the retention chamber and increasing the concentration of nitric oxide gas.

[0012] Optionally, the harmful gas filtering module also includes a nitrogen oxide analyzer, which is connected to the air dryer and is used to detect the content of nitrogen monoxide, nitrogen dioxide and ozone in the gas.

[0013] Optionally, the reaction chamber is made of corrosion-resistant and high-temperature-resistant insulating material.

[0014] Optionally, the negative electrode and the positive electrode are made of metal materials with high melting point and high boiling point.

[0015] Optionally, the air input module includes a gas flow control element and an air dryer connected in sequence, the air dryer is connected to the air inlet end, the gas flow control element is used to control the flow rate of the gas entering the reaction chamber, and the air drying device is used to dry the air to reduce moisture in the air.

[0016] Optionally, the gas flow control element includes an air pump, a proportional valve, a flow rate sensor, a pressure sensor and a single chip microcomputer, wherein the air pump, the proportional valve, the flow rate sensor and the pressure sensor are connected in sequence, and the single chip microcomputer is connected to the proportional valve, the flow rate sensor and the pressure sensor respectively.

[0017] The beneficial effects of the nitric oxide generating device of the present invention are as follows: when working, the air input module is responsible for sending the outside air into the reaction chamber of the nitric oxide generating module. In the reaction chamber, there are a negative electrode and a positive electrode connected to a high-voltage pulse arc generator. The high-voltage pulse generator provides a sufficiently high breakdown voltage to the electrodes in the reaction chamber, and ionizes the air between the two electrodes in the form of arc discharge, thereby generating a stable and relatively high concentration of nitric oxide gas. Finally, the generated nitric oxide gas flows out from the gas outlet end of the reaction chamber and enters the harmful gas filtering module. Since some harmful gases (such as nitrogen dioxide NO2, etc.) may be generated during the electrolysis process, the harmful gas filtering module is responsible for filtering out these harmful gases to ensure that the output nitric oxide gas meets the standards so that it can be used safely. Therefore, the nitric oxide generating device of the present application only needs clean and cheap electricity and air, and can generate enough nitric oxide without various catalysts and chemicals. It has good safety and low cost. Moreover, it can generate nitric oxide instantly when powered on when in use, and no gas is generated when not in use. It overcomes the high cost and transportation cost of storing nitric oxide gas in cylinders and possible dangerous accidents, improves the safety of use, and ensures the quality of the output gas. In addition, the nitric oxide generating device of the present application has a relatively simple structure, does not require complicated equipment and operation processes, reduces the difficulty of use, and makes nitric oxide therapy possible in more occasions (such as areas with scarce supplies or outpatient clinics). BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 The structural frame of the nitric oxide generating device according to one embodiment of the present application is Figure 1 ;

[0019] Figure 2 This is a schematic diagram of the structure of a reaction chamber according to an embodiment of the present application;

[0020] Figure 3 The structural frame of the nitric oxide generating device according to one embodiment of the present application is Figure 2 ;

[0021] Figure 4It is a structural block diagram of a gas flow control element according to one embodiment of the present application.

[0022] Description of reference numerals:

[0023] 1. Air input module; 11. Gas flow control element; 111. Air pump; 112. Proportional valve; 113. Flow rate sensor; 114. Pressure sensor; 115. Single chip microcomputer; 12. Air dryer; 2. Nitric oxide generation module; 21. High voltage pulse arc generator; 211. Negative electrode; 212. Positive electrode; 22. Reaction chamber; 221. Air inlet; 222. Air outlet; 3. Harmful gas filtration module; 31. Filter; 32. Retention chamber; 321. Heater; 322. Magnetic stirrer; 33. Cooling chamber; 34. Air dryer; 35. Nitrogen oxide analyzer. DETAILED DESCRIPTION

[0024] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. Although certain embodiments of the present invention are shown in the accompanying drawings, it should be understood that the present invention can be implemented in various forms and should not be interpreted as being limited to the embodiments described herein. On the contrary, these embodiments are provided to provide a more thorough and complete understanding of the present invention. It should be understood that the drawings and embodiments of the present invention are only for exemplary purposes and are not intended to limit the scope of protection of the present invention.

[0025] The term "including" and its variations used in this document are open inclusions, that is, "including but not limited to"; the term "based on" means "based at least in part on"; the term "one embodiment" means "at least one embodiment"; the term "another embodiment" means "at least one other embodiment"; the term "some embodiments" means "at least some embodiments"; the term "optionally" means "optional embodiments". The relevant definitions of other terms will be given in the following description. It should be noted that the concepts of "first", "second", etc. mentioned in the present invention are only used to distinguish different devices, modules or units, and are not used to limit the order or interdependence of the functions performed by these devices, modules or units.

[0026] It should be noted that the modifications of "one" and "plurality" mentioned in the present invention are illustrative rather than restrictive, and those skilled in the art should understand that, unless otherwise clearly indicated in the context, it should be understood as "one or more".

[0027] like Figure 1 (The arrows in the figure point to the direction of gas flow), Figure 2As shown, a nitric oxide generating device provided by an embodiment of the present invention includes: an air input module 1, a nitric oxide generating module 2 and a harmful gas filtering module 3 connected in sequence, the nitric oxide generating module 2 includes a high-voltage pulse arc generator 21 and a reaction chamber 22, the reaction chamber 22 is provided with an air inlet end 221 and an air outlet end 222, the output end of the air input module 1 is connected to the air inlet end 221, the air input module 1 is used to input air into the reaction chamber 22, the two ends of the high-voltage pulse arc generator 21 are connected with an electrode cathode 211 and an electrode anode 212, the electrode cathode 211 and the electrode anode 212 are located in the reaction chamber 22, the high-voltage pulse arc generator 21 is used to output a voltage to electrolyze the air between the electrode cathode 211 and the electrode anode 212, thereby generating nitric oxide gas, the air outlet end 222 is connected to the harmful gas filtering module 3, and the harmful gas filtering module 3 is used to filter the gas so that the output nitric oxide gas meets the standard.

[0028] Specifically, the air input module 1 is responsible for introducing external air into the interior of the device, especially into the reaction chamber 22 of the nitric oxide generation module 2. The module can be provided with components such as an air filter and a pressure regulator to ensure that the quality and flow rate of the input air meet the electrolysis requirements. The nitric oxide generation module 2 is the core part of the device, including a high-voltage pulse arc generator 21 and a reaction chamber 22. The reaction chamber 22 is provided with an air inlet end 221 and an air outlet end 222, which are respectively connected to the air input module 1 and the harmful gas filtering module 3. The high-voltage pulse arc generator 21 outputs a voltage through the electrode cathode 211 and the electrode anode 212 to break through the gap between the electrodes to electrolyze the air entering the reaction chamber 22. The nitrogen and oxygen molecules in the air collide and dissociate to generate N and O free radicals, which then combine to generate nitric oxide gas. In this application, nitric oxide is produced by collision and combination between plasmas. After comparison, it is found that non-thermal equilibrium plasma discharges such as corona discharge, dielectric barrier discharge and glow discharge can also produce nitric oxide, but will be accompanied by the production of a large amount of ozone or nitrogen dioxide, and the temperature of non-thermal equilibrium plasma discharge is uneven, and the concentration of nitric oxide gas produced is unstable, fluctuating, which is not suitable for clinical medical treatment. The arc discharge in this application is a thermal equilibrium plasma discharge, and the current density formed is large, the temperature is high, the electron temperature in the discharge area is equal to the ion temperature, and the temperature distribution is uniform, so stable nitric oxide gas can be produced, and the content of ozone and nitrogen dioxide is low. The harmful gas filtering module 3 is responsible for further purifying the generated nitric oxide gas and removing possible impurities and harmful gases, such as ozone, nitrogen dioxide, etc. This module can be provided with a variety of filter media and purification technologies, such as activated carbon adsorption, chemical adsorption, catalytic conversion, etc., to ensure that the output gas meets the safety and quality standards for medical use.

[0029] In this embodiment, the air input module 1 is responsible for sending the outside air into the reaction chamber 22 of the nitric oxide generation module 2. In the reaction chamber 22, there is an electrode cathode 211 and an electrode anode 212 connected to the high-voltage pulse arc generator 21. The high-voltage pulse generator provides a sufficiently high breakdown voltage to the electrodes in the reaction chamber 22, and ionizes the air between the two electrodes in the form of arc discharge, thereby generating a stable and high concentration of nitric oxide gas. The generated nitric oxide gas then flows out through the gas outlet 222 of the reaction chamber 22 and enters the harmful gas filtering module 3. The harmful gas filtering module 3 filters the harmful gases generated during the electrolysis process to ensure that the final output nitric oxide gas meets the safety and quality standards for medical use. The nitric oxide generating device of the present application only needs clean and cheap electricity and air, and can generate enough nitric oxide without various catalysts and chemicals. It has good safety and low cost, and can generate nitric oxide instantly when powered on when in use, and no gas is generated when not in use, which overcomes the high cost and transportation cost of storing nitric oxide gas in cylinders and possible dangerous accidents, improves the safety of use, and ensures the quality of the output gas. In addition, the nitric oxide generating device of the present application has a relatively simple structure and does not require complicated equipment and operating procedures, which reduces the difficulty of use and makes nitric oxide therapy possible in more occasions (such as areas with scarce supplies or outpatient clinics).

[0030] Alternatively, if Figure 2 As shown, the straight line where the negative electrode 211 and the positive electrode 212 are located is parallel to the straight line where the air inlet end 221 and the air outlet end 222 are located.

[0031] Specifically, when air enters the reaction chamber 22 through the air inlet end 221, the arrangement of the electrode cathode 211 and the electrode anode 212 is parallel to the airflow direction. Compared with other patents of the same type that arrange the electrodes perpendicular to the airflow direction or at other angles, the electrode power supply end will have a significant blocking effect on the airflow, causing the airflow to flow mainly from both sides of the electrode, with a faster gas flow rate around the electrode and a relatively slow gas flow rate between the two electrodes, so that the electrolysis between the two electrodes occurs fully, which is beneficial to the maintenance of the plasma channel and improves the stability of the pulse arc. Ensure that the nitrogen and oxygen in the air can fully contact and react during the electrolysis process, thereby improving the electrolysis efficiency and the amount of nitric oxide generated.

[0032] In this optional embodiment, the arrangement of the negative electrode 211 and the positive electrode 212 is parallel to the airflow direction, so that the air can be more evenly distributed when flowing through the electrodes, thereby improving the electrolysis efficiency and increasing the amount of nitric oxide generated. At the same time, the parallel arrangement of the electrodes also helps to reduce the turbulence and eddy current of the airflow in the reaction chamber 22, reduce energy loss, and make the entire electrolysis process more stable and efficient.

[0033] Alternatively, if Figure 2As shown, the negative electrode 211 is close to the air inlet end 221 .

[0034] In this optional embodiment, the cathode electrode 211 is close to the air inlet, which is consistent with the electron flow direction, which is conducive to the occurrence of arc, thereby increasing the generation of nitric oxide.

[0035] Alternatively, if Figure 3 As shown (the arrow in the figure indicates the direction of gas flow), the harmful gas filtering module 3 includes a filter 31, a retention bin 32, a cooling bin 33 and an air dryer 34 which are connected in sequence. The filter 31 is connected to the gas outlet 222. The filter 31 is provided with soda lime, which is used to remove the nitrogen dioxide gas in the filter 31. A heater 321 is provided at the bottom of the retention bin 32. The heater 321 is used to heat the gas entering the retention bin 32 at a high temperature, thereby removing the ozone gas in the gas. The cooling bin 33 is used to reduce the temperature of the gas entering the cooling bin 33. The air dryer 34 is used to dry the gas entering the air dryer 34.

[0036] Specifically, the high-voltage pulse arc generator 21 outputs a voltage through the electrode cathode 211 and the electrode anode 212 to break through the gap between the electrodes to electrolyze the air entering the reaction chamber 22. The nitrogen and oxygen molecules in the air collide and dissociate to generate N and O free radicals, which combine to generate nitric oxide gas and also generate nitrogen dioxide content and ozone. The filter 31 is connected to the gas outlet 222 and is the first station of the gas treatment process. The soda lime filled inside is a commonly used alkaline desiccant that can effectively absorb and remove nitrogen dioxide gas. Nitrogen dioxide will be converted into harmless nitrates under the action of soda lime, thereby achieving gas purification. The gas treated by the filter 31 enters the retention chamber 32. A heater 321 is provided in the retention chamber 32, which can decompose or remove the residual ozone in the gas by high-temperature heating. The chemical properties of ozone are unstable. When the temperature is greater than 100 degrees, ozone decomposes very violently and will decompose into oxygen ions and oxygen, thereby effectively removing this harmful gas. The temperature of the gas coming out of the retention chamber 32 is relatively high, so it needs to be cooled by the cooling chamber 33. The function of the cooling chamber 33 is to reduce the temperature of the gas to a suitable range, so that the NO gas can be applied to the human body. In addition, the cooling chamber 33 is made of water, which is low in cost and can also filter out small particle molecules generated during the electrode discharge process and further filter out ozone. Finally, the gas enters the air dryer 34 for drying. The air dryer 34 ensures the dryness of the final gas by removing moisture from the gas, and prevents corrosion, condensation and other problems caused by excessive moisture content.

[0037] In this optional embodiment, the harmful gas filtering module 3 is formed by connecting the filter 31, the retention bin 32, the cooling bin 33 and the air dryer 34 in sequence, forming a complete gas treatment process. As the first station of the gas treatment process, the filter 31 effectively removes nitrogen dioxide gas through the internal filling of soda lime. The retention bin 32 removes ozone gas in the gas by high-temperature heating. The cooling bin 33 and the air dryer 34 are respectively responsible for reducing the gas temperature and removing moisture from the gas to ensure the quality and safety of the final gas. Therefore, not only the quality of the gas is improved, but also the equipment is protected from corrosion and damage by harmful gases. At the same time, by optimizing the gas treatment process, energy consumption is reduced and energy utilization efficiency is improved. In addition, the existence of the harmful gas filtering module 3 also enhances the stability of the entire electrolysis system and ensures the long-term stable operation of the system.

[0038] Alternatively, if Figure 3 As shown, a magnetic stirrer 322 is also provided in the retention chamber 32, and the stirrer is used for stirring, thereby strengthening the combination of N ions and O ions entering the retention chamber 32 and increasing the concentration of nitric oxide gas.

[0039] Specifically, the N ions and O ions in the reaction chamber 22 react to generate NO. When the power of the arc generator is large enough, individual N ions and O ions are blown into the retention chamber 32 by the air. In the retention chamber 32, the stirring action of the magnetic stirrer 322 provides better mixing and contact opportunities, thereby promoting the chemical reaction between them, further strengthening the combination of N ions and O ions, and increasing the concentration of nitric oxide gas.

[0040] In this optional embodiment, the introduction of the magnetic stirrer 322 significantly enhances the combining efficiency of N ions and O ions, thereby increasing the concentration of nitric oxide gas in the retention chamber 32 .

[0041] Alternatively, if Figure 3 As shown, the harmful gas filtering module 3 also includes a nitrogen oxide analyzer 35, which is connected to the air dryer 34. The nitrogen oxide analyzer 35 is used to detect the content of nitrogen monoxide, nitrogen dioxide and ozone in the gas to ensure that the output gas meets the standards.

[0042] Specifically, the nitrogen oxide analyzer 35 is connected to the air dryer 34 and is located at the end of the entire gas processing process. After the gas passes through the air dryer 34, it enters the nitrogen oxide analyzer 35 for quality detection. The analyzer can detect the content of nitrogen monoxide, nitrogen dioxide and ozone in the gas with high sensitivity and high accuracy, and display the detection results in the form of specific values ​​or transmit them to the control system for further processing.

[0043] In this optional embodiment, the introduction of the nitrogen oxide analyzer 35 enables the harmful gas filtering module 3 to monitor the quality of the output gas in real time, ensuring that the content of nitrogen monoxide, nitrogen dioxide and ozone meets the established safety or environmental protection standards, which is of great significance for ensuring production safety, avoiding environmental pollution and meeting the requirements of relevant laws and regulations. Moreover, by continuously monitoring the quality of the output gas, the nitrogen oxide analyzer 35 can promptly detect and report any abnormal situation, thereby allowing the operator to take timely measures to adjust or maintain, which helps to improve the reliability and stability of the entire harmful gas filtering module 3 and ensure the long-term stable operation of the system. And the real-time data provided by the nitrogen oxide analyzer 35 can also be used to optimize the process parameters in the electrolysis process. For example, by analyzing the quality changes of the output gas in different time periods, the operator can adjust the electrolysis voltage, temperature and other parameters to further improve the electrolysis efficiency and product purity.

[0044] Alternatively, if Figure 2 As shown, the reaction chamber 22 is made of corrosion-resistant and high-temperature-resistant insulating material.

[0045] Specifically, during the electrolysis process, a series of chemical reactions will occur inside the reaction chamber 22, generating high temperature, high pressure, and potentially corrosive gases or liquids, such as moist nitric oxide that corrodes most metals. The reaction chamber 22 is made of corrosion-resistant and high-temperature resistant insulating materials, which can effectively resist the erosion of the reaction chamber 22 by these extreme conditions, thereby ensuring the structural integrity and service life of the reaction chamber 22. In this embodiment, the reaction chamber 22 is made of polytetrafluoroethylene and quartz glass. In addition, polytetrafluoroethylene is used as a material in the part that contacts the electrode to ensure insulation.

[0046] In this optional embodiment, the reaction chamber 22 made of corrosion-resistant and high-temperature resistant insulating materials not only improves the durability of the reaction chamber 22, enabling it to resist the corrosive and high-temperature environment generated during the electrolysis process, but also enhances electrical safety and ensures electrical isolation of the reaction chamber 22 during the electrolysis process. At the same time, since the reaction chamber 22 can maintain good structural integrity and electrical safety, it can ensure the smooth progress of the electrolysis process, thereby improving the electrolysis efficiency.

[0047] Alternatively, if Figure 2 As shown, the negative electrode 211 and the positive electrode 212 are made of metal materials with high melting point and high boiling point.

[0048] Specifically, the materials of the negative electrode 211 and the positive electrode 212 can be composed of the same metal or different metals. The ablation of the electrode will not only affect the service life of the nitric oxide generating device, but also the metal ions sputtered due to the ablation of the electrode will enter the mixed gas and affect the quality of the inhaled gas. Therefore, metals with higher melting points and boiling points are required as electrode materials. In this embodiment, molybdenum and stainless steel are used as electrode materials for arc generation.

[0049] In this optional embodiment, the metal material with high melting point and high boiling point has high thermal stability and chemical stability, and can maintain a stable shape and structure during the electrolysis process, ensuring the smooth progress of the electrolysis process, thereby improving the electrolysis efficiency. At the same time, due to the enhanced durability of the electrode, the frequency of replacement is reduced, reducing the cost of replacing the electrode. In addition, the stable electrode shape and structure also help to reduce side reactions and impurity generation during the electrolysis process, and improve the quality of the electrolysis product.

[0050] Alternatively, if Figure 1 , Figure 4 As shown, the air input module 1 includes a gas flow control element 11 and an air dryer 12 which are connected in sequence. The air dryer 12 is connected to the air inlet end 221. The gas flow control element 11 is used to control the flow rate of the gas entering the reaction chamber 22, and the air drying device is used to dry the air to reduce the moisture in the air.

[0051] Specifically, the gas flow control element 11 is responsible for accurately controlling the flow rate of the gas entering the reaction chamber 22. By adjusting the setting of the gas flow control element 11, the gas flow rate can be finely adjusted to meet the requirements of the electrolysis process for the gas flow rate. This precise control helps to ensure the stability and efficiency of the electrolysis process. The main function of the air dryer 12 connected to the gas flow control element 11 is to remove moisture from the air to prevent moisture from having an adverse effect on the electrolysis process. Through the treatment of the air dryer 12, it can be ensured that the air entering the reaction chamber 22 is dry, thereby optimizing the electrolysis process and improving the efficiency of nitric oxide generation.

[0052] In this optional embodiment, the electrolysis process can be optimized and the electrolysis efficiency can be improved by precisely controlling the gas flow rate and removing moisture from the air. A stable gas flow rate and dry air help ensure that the electrolysis reaction is carried out under optimal conditions, thereby increasing the generation rate and purity of nitric oxide. Moisture in the air may cause corrosion and damage to the electrolysis equipment. Removing moisture through the air dryer 12 can reduce corrosion to the equipment, thereby extending the service life of the equipment. During the electrolysis process, moisture may react with the electrolyte to produce flammable gases such as hydrogen. By removing moisture from the air, this risk can be reduced and the safety of the electrolysis process can be improved.

[0053] Alternatively, if Figure 4 As shown (the arrow in the figure points to the direction of gas flow), the gas flow control element 11 includes an air pump 111, a proportional valve 112, a flow rate sensor 113, a pressure sensor 114 and a single-chip computer 115. The air pump 111, the proportional valve 112, the flow rate sensor 113, and the pressure sensor 114 are connected in sequence, and the single-chip computer 115 is respectively connected to the proportional valve 112, the flow rate sensor 113 and the pressure sensor 114.

[0054] Specifically, the air pump 111, as the starting point of the gas flow control element 11, is responsible for providing a stable gas source, can inhale and pressurize the outside air, and then transport it to the subsequent proportional valve 112. The proportional valve 112 is a device that can adjust the gas flow according to the control signal, receives the control signal from the single-chip microcomputer 115, and adjusts the valve opening according to the strength of the signal, so as to achieve accurate control of the gas flow. The flow rate sensor 113 is used to monitor the flow rate of the gas through the pipeline in real time, converts the flow rate information into an electrical signal, and transmits it to the single-chip microcomputer 115 for processing. The pressure sensor 114 is used to monitor the pressure change in the gas pipeline, and also converts the pressure information into an electrical signal, and transmits it to the single-chip microcomputer 115 for recording and analysis. The single-chip microcomputer 115 is the core of the entire gas flow control element 11, receives the signals from the flow rate sensor 113 and the pressure sensor 114, and processes the signals according to the preset algorithm and logic. Then, the single-chip microcomputer 115 sends a control signal to the proportional valve 112 according to the processing result to adjust the gas flow. At the same time, the single chip microcomputer 115 can also monitor and diagnose the operating status of the system to ensure the stability and reliability of the system.

[0055] In this optional embodiment, the single chip microcomputer 115 can precisely control the proportional valve 112 to achieve fine adjustment of the gas flow rate, ensuring that the electrolysis process is carried out under the optimal gas flow conditions, thereby improving the electrolysis efficiency and product quality. The real-time monitoring function of the flow rate sensor 113 and the pressure sensor 114 can detect changes in gas flow and pressure in a timely manner, thereby avoiding abnormal conditions in the system and helping to improve the stability and safety of the system. As the core of the system, the single chip microcomputer 115 can realize intelligent management of the entire gas flow control element 11. Through preset algorithms and logic, the single chip microcomputer 115 can automatically adjust the operating state of the system to adapt to different electrolysis requirements, which helps to improve the flexibility and adaptability of the system.

[0056] Although the present invention is disclosed as above, the protection scope of the present invention is not limited thereto. Those skilled in the art may make various changes and modifications without departing from the spirit and scope of the present invention, and these changes and modifications will fall within the protection scope of the present invention.

Claims

1. A nitric oxide generating device, characterized in that: include: An air input module (1), a nitric oxide generation module (2) and a harmful gas filtering module (3) are sequentially connected, the nitric oxide generation module (2) comprising a high-voltage pulse arc generator (21) and a reaction chamber (22), the reaction chamber (22) being provided with an air inlet end (221) and an air outlet end (222), the output end of the air input module (1) being connected to the air inlet end (221), the air input module (1) being used to input air into the reaction chamber (22), the two ends of the high-voltage pulse arc generator (21) being connected to the air outlet end (222), An electrode negative electrode (211) and an electrode positive electrode (212) are connected, the electrode negative electrode (211) and the electrode positive electrode (212) are located in the reaction chamber (22), the high-voltage pulse arc generator (21) is used to output voltage to electrolyze the air between the electrode negative electrode (211) and the electrode positive electrode (212) to generate nitric oxide gas, the gas outlet (222) is connected to the harmful gas filtering module (3), and the harmful gas filtering module (3) is used to filter gas to ensure that the output nitric oxide gas meets the standard.

2. The nitric oxide generating device according to claim 1, characterized in that: The straight line where the electrode negative pole (211) and the electrode positive pole (212) are located is parallel to the straight line where the air inlet end (221) and the air outlet end (222) are located.

3. The nitric oxide generating device according to claim 2, characterized in that: The electrode cathode (211) is close to the air inlet end (221).

4. The nitric oxide generating device according to claim 1, characterized in that: The harmful gas filtering module (3) comprises a filter (31), a retention bin (32), a cooling bin (33) and an air dryer (34) which are connected in sequence. The filter (31) is connected to the gas outlet (222). Alkali is provided in the filter (31), and the alkaline lime is used to remove nitrogen dioxide gas in the filter (31). A heater (321) is provided at the bottom of the retention bin (32), and the heater (321) is used to heat the gas entering the retention bin (32) at a high temperature, thereby removing ozone gas in the gas. The cooling bin (33) is used to reduce the temperature of the gas entering the cooling bin (33). The air dryer (34) is used to dry the gas entering the air dryer (34).

5. The nitric oxide generating device according to claim 4, characterized in that: A magnetic stirrer (322) is also provided in the retention chamber (32), and the stirrer is used for stirring, thereby strengthening the combination of N ions and O ions entering the retention chamber (32) and increasing the concentration of nitric oxide gas.

6. The nitric oxide generating device according to claim 4, characterized in that: The harmful gas filtering module (3) further comprises a nitrogen oxide analyzer (35), wherein the nitrogen oxide analyzer (35) is connected to the air dryer (34), and the nitrogen oxide analyzer (35) is used to detect the content of nitrogen monoxide, nitrogen dioxide and ozone in the gas.

7. The nitric oxide generating device according to claim 1, characterized in that: The reaction chamber (22) is made of corrosion-resistant and high-temperature-resistant insulating material.

8. The nitric oxide generating device according to claim 1, characterized in that: The negative electrode (211) and the positive electrode (212) are made of metal materials with high melting points and high boiling points.

9. The nitric oxide generating device according to claim 1, characterized in that: The air input module (1) comprises a gas flow control element (11) and an air dryer (12) which are connected in sequence, wherein the air dryer (12) is connected to the air inlet end (221), the gas flow control element (11) is used to control the flow rate of the gas entering the reaction chamber (22), and the air drying device is used to dry the air to reduce the moisture in the air.

10. The nitric oxide generating device according to claim 9, characterized in that: The gas flow control element (11) comprises an air pump (111), a proportional valve (112), a flow rate sensor (113), a pressure sensor (114) and a single chip computer (115); the air pump (111), the proportional valve (112), the flow rate sensor (113) and the pressure sensor (114) are connected in sequence; and the single chip computer (115) is connected to the proportional valve (112), the flow rate sensor (113) and the pressure sensor (114) respectively.

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