Oxygen multi-element medium mixing generation device

Abstract

The invention relates to the technical field of health physiotherapy equipment, and particularly discloses an oxygen multi-element medium mixing generation device, which comprises an oxygen generation module, a medium generation module, a medium mixing module and a control module electrically matched with each module, the oxygen generation module comprises an air compressor and an adsorption assembly, the adsorption assembly is filled with a molecular sieve, the air compressor is used for supplying high-pressure air to the adsorption assembly, and the adsorption assembly is used for selectively adsorbing nitrogen in the high-pressure air in a pressurized state, so that oxygen is enriched and discharged to the medium mixing module; the medium generation module is used for generating a non-oxygen medium flow and outputting the non-oxygen medium flow to the medium mixing module; the medium mixing module is used for mixing and outputting oxygen and non-oxygen medium flow to an external space; the control module is used for adjusting the oxygen production amount of the oxygen production module, the output amount of the medium generation module and the mixing proportion of oxygen and non-oxygen medium flow according to the use environment parameters or user instructions.

Description

Technical Field

[0001] This invention relates to the field of health therapy equipment technology, and in particular discloses an oxygen multi-media mixing and generating device. Background Technology

[0002] In existing technologies, oxygen generators are usually set up independently with steam generators, nebulizers, or aromatherapy / medicinal fumigation devices. Each device outputs oxygen, steam, or other therapeutic media separately. They need to be combined through external pipelines or manually during use. This not only results in a dispersed structure, large size, and inconvenience in use, but also makes it difficult to coordinate and control the output and mixing ratio of different media, which can easily lead to uneven mixing and poor output stability. In addition, existing oxygen generators mostly focus only on the oxygen output itself and cannot dynamically adjust the mixing ratio of oxygen with other media according to the actual use environment or user needs. This makes it difficult to meet the needs of health therapy scenarios for oxygen enrichment and the synergistic effect of multiple media. Summary of the Invention

[0003] In order to overcome the shortcomings and deficiencies of the existing technology, the purpose of this invention is to provide an oxygen multi-media mixing and generating device based on pressure swing adsorption oxygen generation technology, especially a composite generating device that can controllably mix and output oxygen with non-oxygen media such as steam, water vapor, aromatherapy media or medicinal fumigation media, which is suitable for application scenarios such as health therapy, health care environment regulation and oxygen-enriched medium output.

[0004] To achieve the above objectives, the present invention provides an oxygen multi-medium mixing and generating device, comprising an oxygen generating module, a media generating module, a media mixing module, and a control module electrically connected to each module; the oxygen generating module includes an air compressor and an adsorption component, the adsorption component being filled with a molecular sieve, the air compressor supplying high-pressure air to the adsorption component, the adsorption component selectively adsorbing nitrogen from the high-pressure air under pressure, thereby enriching oxygen and discharging it to the media mixing module; the media generating module generating a non-oxygen media stream and outputting it to the media mixing module; the media mixing module mixing the oxygen and non-oxygen media streams and outputting them to the external space; the control module adjusting the oxygen production of the oxygen generating module, the output of the media generating module, and the mixing ratio of the oxygen and non-oxygen media streams according to environmental parameters or user instructions.

[0005] Furthermore, the medium generating module is one or more combinations of a steam generating module, an atomizing module, an aromatherapy module, a medicinal fumigation module, and an evaporator.

[0006] Furthermore, the steam generating module includes a water storage structure and an electric heating element for heating the water in the water storage structure to generate water vapor; the ultrasonic atomization module includes an ultrasonic transducer for atomizing the water to generate water vapor; the aromatherapy module includes a container structure for containing aromatherapy medium and a carrier gas channel communicating with the container structure, the aromatherapy module being configured to allow the carrier gas to flow through the container structure and carry the aromatherapy medium to form an aromatherapy medium flow; the medicinal fumigation module includes a container structure for containing medicinal fumigation medium and a carrier gas channel communicating with the container structure, the medicinal fumigation module being configured to allow the carrier gas to flow through the container structure and carry the medicinal fumigation medium to form a medicinal fumigation medium flow.

[0007] Furthermore, the evaporator is configured to contain a liquid medium, and by increasing the evaporation surface area of ​​the liquid medium, the liquid medium is naturally evaporated at room temperature or low temperature by means of airflow or ambient heat flowing over its surface, forming a humid airflow rich in the volatile components of the liquid.

[0008] Furthermore, the liquid medium includes one of water, electrolyte solution, volatile therapeutic fluid, or environmental conditioning fluid, to achieve multiple functions such as environmental humidification, simulating a therapeutic microenvironment, or assisting in air management.

[0009] Furthermore, the water storage structure is a kettle, and the electric heating element consists of two heating wires located at the bottom of the kettle.

[0010] Furthermore, a pressure relief pipe is provided at the top of the water storage structure, and a pressure relief valve can be installed on the pressure relief pipe.

[0011] Furthermore, the oxygen generating module has an oxygen output channel, the medium generating module has a medium outlet, and the medium mixing module includes a mixing chamber connected to the oxygen output channel of the oxygen generating module and the medium outlet of the medium generating module, and a mixing output channel connected to the mixing chamber. The mixing output channel is used to output the mixed medium to the external space.

[0012] Furthermore, the adsorption assembly includes a first adsorption tower and a second adsorption tower connected in parallel. Both the first and second adsorption towers are filled with molecular sieves for adsorbing nitrogen. The first adsorption tower has a first gas channel and a first oxygen outlet, and the second adsorption tower has a second gas channel and a second oxygen outlet. The oxygen generation module also includes a reversing valve disposed between the first gas channel and the second gas channel. The reversing valve is connected to an air compressor to allow high-pressure air output from the air compressor to alternately enter the first gas channel and the second gas channel. When the air compressor delivers high-pressure air to the first adsorption tower via the reversing valve for adsorption and oxygen production, the second adsorption tower depressurizes, desorbs, and removes nitrogen. When the air compressor delivers high-pressure air to the second adsorption tower via the reversing valve for adsorption and oxygen production, the first adsorption tower depressurizes, desorbs, and removes nitrogen, so that the first and second adsorption towers produce oxygen sequentially to achieve oxygen cycle output.

[0013] Furthermore, the oxygen generation module also includes an alternating oxygen output component disposed between the first oxygen outlet and the second oxygen outlet. The alternating oxygen output component includes a three-way valve and a check valve connected to the three-way valve. The two side ports of the three-way valve are respectively connected to the first oxygen outlet and the second oxygen outlet, and the exhaust port of the three-way valve forms an oxygen output channel through the check valve.

[0014] Furthermore, the alternating oxygen output assembly also includes a first tube, a second tube, a third tube, and a fourth tube; one end of the first tube is connected to a first oxygen outlet, and the other end of the first tube is connected to a side port of a three-way valve; one end of the second tube is connected to a second oxygen outlet, and the other end of the second tube is connected to the other side port of the three-way valve; the third tube is connected between the exhaust port of the three-way valve and the inlet port of the check valve; the exhaust port of the check valve is connected to one end of the fourth tube; and the other end of the fourth tube constitutes the oxygen output channel.

[0015] Furthermore, the check valve is configured to allow oxygen to flow only in the output direction of the oxygen output channel, thereby preventing oxygen or external media from flowing back in the opposite direction to the three-way valve, the first adsorption tower, and the second adsorption tower.

[0016] Furthermore, the oxygen generation module also includes a flow-limiting structure, which is set at the oxygen outlet and / or the exhaust port of the three-way valve to limit the oxygen flow rate, so that when the adsorption component desorbs and removes nitrogen, a reverse airflow is formed to reverse-clean the molecular sieve.

[0017] Furthermore, the current limiting structure is a throttle, a current limiting orifice, a current limiting channel, or a structure with equivalent current limiting function.

[0018] Furthermore, the flow-limiting structure's restriction on oxygen flow is designed in conjunction with system parameters such as the switching cycle of the reversing valve, the air supply of the air compressor, and the filling amount and height-to-diameter ratio of the molecular sieve in the adsorption tower. This coordinated design ensures that a reverse cleaning airflow with suitable flow rate and pressure is formed at the instant of nitrogen desorption in the adsorption tower. This allows for efficient regeneration of the molecular sieve without affecting continuous oxygen production, guaranteeing the long-term stability and oxygen purity of the entire dual-tower parallel circulating oxygen generation system.

[0019] Furthermore, the oxygen generation module also includes a filter assembly, which is installed at the air intake end of the air compressor to filter dust, particulate matter and impurities in the outside air.

[0020] Furthermore, the molecular sieve is a zeolite molecular sieve or a carbon molecular sieve, and the zeolite molecular sieve includes one or more combinations of 5A type molecular sieve, 13X type molecular sieve, mordenite zeolite, and lithium-exchange low-silica X type molecular sieve.

[0021] Furthermore, the control module includes an interaction unit and a display unit. The interaction unit is used to receive start, stop, gear selection, and timing commands from the user. The display unit is used to display the operating status, timing time, and working gear of the mixing device. The control module controls the start, stop, and operating power of the oxygen generation module and the medium generation module according to the commands from the interaction unit, and provides feedback on the current working status through the display unit during operation.

[0022] Furthermore, the mixing device also includes a housing assembly, which includes a main housing for housing the oxygen generation module, the medium generation module, and the medium mixing module, as well as an upper cover and a lower cover respectively disposed at the upper and lower ends of the main housing. The upper cover is used to install the control module, and the lower cover is provided with multiple heat dissipation vents.

[0023] Furthermore, a handle is rotatably provided on the upper cover, which is rotatably mounted on the main housing to cover and protect the top of the water storage structure. A linkage lock is provided between the upper cover and the main housing, and the user can close or open the upper cover and the main housing through the linkage lock.

[0024] Furthermore, the air compressor and the reversing valve are both located inside the lower cover.

[0025] Furthermore, the electric heating element is located inside the lower cover body. The nitrogen gas discharged from the first gas channel of the first adsorption tower or the second gas channel of the second adsorption tower during low-pressure desorption and nitrogen removal enters a nitrogen output pipe through a reversing valve and is discharged into the lower cover body to provide explosion-proof inert gas for the electric heating element.

[0026] This invention proposes an oxygen multi-media mixing and generating device, which includes an oxygen generation module, a media generation module, a media mixing module, and a control module electrically connected to each module. The oxygen generation module supplies high-pressure air to an adsorption component filled with molecular sieves through an air compressor, selectively adsorbing nitrogen in the air under pressure to enrich and output oxygen. The media generation module is used to independently generate one or more non-oxygen media such as steam, water vapor, aromatherapy media flow, or medicinal fumigation media flow. The media mixing module mixes the oxygen generated by the self-generated oxygen module with the non-oxygen media flow from the media generation module and outputs it to the external space. The control module coordinates and adjusts the oxygen production of the oxygen generation module, the output of the media generation module, and the mixing ratio of oxygen and non-oxygen media flow according to the environmental parameters or user instructions, thereby achieving stable and controllable mixed output of multiple media.

[0027] The beneficial effects of this invention are as follows: Compared with the prior art, this invention integrates oxygen generation and multiple media generation functions into the same device, and utilizes a media mixing module and a control module to achieve unified scheduling and mixed output of multiple media, avoiding the problems of complex structure and decentralized control caused by the combined use of multiple devices. At the same time, by adjusting the oxygen generation, media output, and mixing ratio, oxygen and non-oxygen media can be flexibly combined according to actual needs, improving the stability and adaptability of the output media. In addition, this invention has a high degree of structural integration and strong operational reliability. It can output oxygen or non-oxygen media individually, or achieve synergistic effects of multiple media, which can better meet the application needs of health therapy and oxygen-enriched environment regulation, and has good practical value and promotion prospects. Attached Figure Description

[0028] Figure 1 This is a three-dimensional structural diagram of the mixing generating device of the present invention; Figure 2 This is an exploded structural diagram of the mixing generating device of the present invention; Figure 3 This is a schematic diagram of the internal components of the lower cover of the mixing device of the present invention; Figure 4 This is a schematic diagram of the adsorption component of the present invention; Figure 5 This is a schematic diagram of the exploded structure of the adsorption component of the present invention; Figure 6 This is a schematic diagram of the airflow when the reversing valve of the present invention is used in conjunction with the adsorption assembly; Figure 7 This is a three-dimensional structural diagram of the mixing generating device of the present invention after cross-section; Figure 8 This is a simplified flow diagram of the dual-tower parallel gas separation system of the mixing generator of the present invention; Figure 9This is a timing diagram of the dual-tower parallel oxygen generation cycle of the present invention.

[0029] The reference numerals in the figures include: 1. Oxygen generation module; 2. Medium generation module; 3. Medium mixing module; 4. Control module; 5. Housing assembly; 11. Air compressor; 12. Adsorption assembly; 121. First adsorption tower; 1211. First gas channel; 1212. First oxygen outlet; 122. Second adsorption tower; 1221. Second gas channel; 1222. Second oxygen outlet; 13. Reversing valve; 14. Alternating oxygen output assembly; 141. Three-way valve; 142. Check valve; 143. First pipe body; 144. Second pipe body; 145. Third pipe body; 146. Fourth pipe body; 15. Flow limiting structure; 16. Filter assembly; 211. Water storage structure; 2111. Pressure relief pipe; 212. Electric heating element; 31. Mixing output channel; 42. Display unit; 51. Main housing; 52. Upper cover; 521. Handle; 53. Lower cover; 54. Interlock. Detailed Implementation

[0030] To facilitate understanding by those skilled in the art, the present invention will be further described below with reference to embodiments and accompanying drawings. The content mentioned in the embodiments is not intended to limit the present invention.

[0031] Please see Figures 1 to 9 As shown, the present invention discloses an oxygen multi-medium mixing generator, the core of which is the integration of pressure swing adsorption (PSA) oxygen generation, multi-medium generation, and intelligent mixing control into one unit. The outer casing assembly 5 of this device specifically includes a main casing 51, which is made of flame-retardant ABS engineering plastic. The interior is divided into relatively independent gas path and electrical path areas by partitions. The main casing 51 has an upper cover 52 and a lower cover 53 respectively. The lower cover 53 has densely packed longitudinal heat dissipation vents to promote airflow and heat dissipation. The upper cover 52 is connected to the main casing 51 via a rear hinge, and a front interlocking lock 54 allows for quick opening and closing. The top of the upper cover 52 also houses the interactive unit and display unit 42 of the control module 4, and a rotating metal handle facilitates the transport of the entire unit.

[0032] Specifically, the oxygen generation module 1, the medium generation module 2, and the medium mixing module 3 are all arranged inside the main housing 51, while the control module 4 is integrated inside the upper cover 52 and the circuit area of ​​the main housing 51, and is connected to each functional module via wiring harnesses. Compared to the complex situation of multiple independent devices stacked together in the prior art, this solution, through highly integrated and modular design, condenses multiple functions into a compact body, possessing significant advantages such as compact structure, small footprint, and ease of movement and storage, greatly improving the user's convenience in various scenarios such as home and outdoors.

[0033] Specifically, in this embodiment, the oxygen generation module 1 is the core air source of the device. The air compressor 11 is preferably an oil-free, silent type, fixed on a shock-absorbing pad inside the lower cover 53, and its exhaust pressure is ≤0.2MPa. The air inlet is connected to an air inlet filter via a hose. This air inlet filter contains replaceable HEPA filter cotton to filter out dust particles in the air.

[0034] The adsorption assembly 12 includes two parallel molecular sieve adsorption towers (first adsorption tower 121 and second adsorption tower 122), which are made of aluminum alloy or heat-resistant plastic, are generally cylindrical, and are filled with a specific weight of molecular sieves that have a high selective adsorption capacity for nitrogen.

[0035] The first adsorption tower 121 has a first air inlet channel and a first oxygen outlet 1212, and the second adsorption tower 122 has a second air inlet channel and a second oxygen outlet 1222. The oxygen generation module 1 also includes a reversing valve 13 disposed between the first air inlet channel and the second air inlet channel. The reversing valve 13 is connected to the air compressor 11 to allow the high-pressure air output by the air compressor 11 to alternately enter the first air inlet channel and the second air inlet channel.

[0036] Specifically, the high-pressure air output from the air compressor 11 is distributed via a four-way directional valve 13 driven by a claw-type synchronous motor (or a two-position four-way solenoid valve), with the motor rotating at approximately 8 revolutions per minute. The directional valve 13 periodically directs the high-pressure air through a first inlet channel to one of the adsorption towers (such as the first adsorption tower 121). At this time, the pressure inside the tower increases, the molecular sieve adsorbs a large amount of nitrogen, and the enriched oxygen flows out through the molecular sieve from the top oxygen outlet. Simultaneously, another adsorption tower (the second adsorption tower 122) is connected to the directional valve 13 through a second gas channel 1221, and the pressure rapidly drops to atmospheric pressure. The previously adsorbed nitrogen desorbs, precipitates, and is discharged. After approximately a few seconds, the directional valve 13 switches, and the two towers exchange roles, thereby achieving continuous oxygen production.

[0037] Compared to the single-function shortcomings of existing oxygen generators, the PSA technology used in this solution not only continuously produces oxygen-enriched gas, but more importantly, it simultaneously generates high-purity nitrogen byproducts. This provides a unique and free gas source for achieving intrinsically safe explosion-proof operation within the system, thus realizing the efficient and comprehensive utilization of resources.

[0038] Specifically, please refer to Figure 8 As shown, T0, T4, and T8 represent the pressure boosting adsorption stage of the first adsorption tower 121 and the pressure depressurization desorption stage of the second adsorption tower 122. T1, T5, and T9 represent the pressure equalization stages of the first adsorption tower 121 as a high-pressure adsorption tower and the second adsorption tower 122 as a low-pressure adsorption tower. T2, T6, and T10 represent the depressurization desorption stage of the first adsorption tower 121 and the pressurization adsorption stage of the second adsorption tower 122. T3, T7, and T11 represent the pressure equalization stages of the first adsorption tower 121 as a low-pressure adsorption tower and the second adsorption tower 122 as a high-pressure adsorption tower.

[0039] Please see Figure 6 As shown, the solid arrows represent the high-pressure stage of the two adsorption towers, and the dashed arrows represent the low-pressure stage and nitrogen discharge stage of the two adsorption towers.

[0040] In actual operation, when the air compressor 11 delivers high-pressure fresh air to the first adsorption tower 121 through the reversing valve 13, the first adsorption tower 121 adsorbs nitrogen and collects oxygen. At this time, the second adsorption tower 122 desorbs nitrogen and outputs no oxygen. Conversely, when the air compressor 11 delivers high-pressure fresh air to the second adsorption tower 122 through the reversing valve 13, the second adsorption tower 122 adsorbs nitrogen and collects oxygen. At this time, the first adsorption tower 121 desorbs nitrogen and outputs no oxygen. The two adsorption towers circulate with each other, achieving separation of nitrogen and oxygen and continuous output of both.

[0041] Specifically, in this embodiment, the medium generating module 2 can be selectively operated according to user needs. The steam generating module includes a stainless steel (or ceramic, glass, or heat-resistant plastic) kettle as a water storage structure 211, with a capacity of approximately 1.0-2.0 liters, and an electric heating element 212 is tightly attached to the outer surface of its bottom.

[0042] Preferably, the electric heating element 212 is composed of two independent iron-chromium-aluminum heating wires with different powers, for example, one with a power of about 600W and the other with a power of about 1000W. They are connected in parallel and controlled by the relay of the control module 4 to achieve three heating power levels: 600W (only the first wire), 1000W (only the second wire), and 1600W (both wires at the same time), thereby accurately controlling the steam generation rate.

[0043] In practical use, as a specific embodiment of the electric heating element 212, it can be implemented using an infrared heating module. The infrared heating module includes an infrared radiation tube or a heating plate with an infrared coating, and is disposed at the bottom of the water storage structure 211. When energized, the emitted infrared rays can penetrate the water for efficient and uniform heating, thereby converting the water into steam. This method features fast thermal response and high thermal efficiency.

[0044] The kettle has a steam outlet on top, which is connected to a steam output pipe. A mechanical pressure relief valve is installed on the pipe, with an opening pressure set at 0.02-0.05 MPa to prevent the pipe from becoming blocked and causing excessive pressure.

[0045] Specifically, the atomization module may include an ultrasonic atomization module or a compression atomization module. The ultrasonic atomization module is set up independently and includes a PP material atomization water tank with a capacity of about 0.5 liters. An ultrasonic transducer (piezoelectric ceramic plate) with a frequency of 1.7MHz is installed at the bottom of the tank.

[0046] The compression nebulizer module includes a compressed gas source (such as a miniature air pump), a nebulizer cup, and a Venturi nozzle. When the compressed gas is ejected at high speed through the nozzle, a negative pressure is generated at the liquid inlet of the cup, drawing in the liquid and breaking it into fine aerosol particles, forming a nebulized medium flow suitable for inhalation therapy. This medium is then output to the medium mixing module 3 to mix with oxygen. This compression nebulizer module is particularly suitable for nebulizing solutions or suspensions for inhalation. The aromatherapy module and the fumigation module are not independent medium sources, but rather functional add-ons. In this embodiment, it is preferably designed as a detachable box made of food-grade PP or 304 stainless steel with a temperature resistance of 100°C. The interior can hold dried herbs such as mugwort and peppermint, or lavender essential oil, etc. The box has an air inlet and an air outlet, and is installed on the steam output pipeline or the nebulized gas outlet pipeline by a snap-fit ​​mechanism. When steam or cold mist flows through the box, it carries the volatile components therein, forming an aromatherapy or fumigation medium flow.

[0047] Compared to the existing technology where humidification, aromatherapy, and physiotherapy devices are separate, this solution deeply integrates the generation and delivery functions of multiple media. Users can easily switch or combine different physiotherapy modes with a single device, meeting diverse and personalized health needs and greatly enhancing the product's functionality and market appeal.

[0048] Specifically, as another important embodiment of the present invention, the medium generating module can be integrated with an evaporator, which includes a detachable liquid container and an evaporation core made of a porous fibrous material (such as ceramic, sintered polymer) or a rotating evaporation wheel. The lower part of the evaporation core draws liquid from the container through capillary action, while its upper part is largely exposed in the flow channel.

[0049] When the device is in operation, a portion of the oxygen-enriched air (or separately introduced ambient air) generated by the oxygen generation module 1 is guided to flow across the surface of the moistened evaporation core. Under the action of the airflow, the liquid evaporates slowly at room temperature or slightly above room temperature, generating a mild, humid airflow with suitable humidity and no significant temperature increase, which is then transported to the medium mixing module 3.

[0050] By changing the medium inside the liquid container, this device can flexibly achieve different functions: for example, injecting pure water can achieve basic low-temperature humidification and avoid the risk of burns from high-temperature steam; injecting a sodium chloride solution of a specific concentration can simulate a saline therapy environment; and injecting plant extracts with air-purifying properties can help improve air quality.

[0051] This evaporation method is particularly suitable for temperature-sensitive liquid media or liquids that require the stability of active ingredients, demonstrating the significant advantages of this device in personalized, multifunctional health therapy.

[0052] Specifically, in this embodiment, the medium mixing module 3 has a structure similar to the three-way valve 141, and is made of high-temperature resistant silicone tubing (the inner layer is resistant to 120°C steam, and the outer layer is covered with aluminum foil for heat insulation). The mixing chamber has two air inlets: one is connected to the oxygen output channel of the oxygen generating module 1 through a pipeline, and the other is connected to the medium outlet of the medium generating module 2 (steam or atomization).

[0053] In addition, preferably, a one-way check valve is installed on the pipeline before the oxygen inlet. The check valve 142 opens when the forward pressure is higher than 0.02MPa and the reverse pressure resistance can reach 0.4MPa. It can effectively prevent high-temperature steam or humid gas in the mixing chamber from flowing back into the precision oxygen generation module 1 and contaminating the molecular sieve.

[0054] The mixing chamber can be designed with a vortex structure to promote thorough gas mixing. The outlet end of the mixing chamber (the end of the high-temperature resistant silicone tube) can be connected to a 360° rotating diffusion nozzle to deliver the uniformly mixed oxygen-enriched medium to the physiotherapy tent or sauna.

[0055] Compared to the traditional, cumbersome method that requires users to assemble oxygen tubing and steam outlet themselves, this solution ensures that oxygen and the medium reach a predetermined ratio and are mixed evenly before output through a built-in dedicated mixing chamber and check valve protection structure. This not only makes the user experience more convenient but also avoids the risk of gas backflow, resulting in higher output stability and safety.

[0056] In this embodiment, the continuous and stable output of the oxygen generation module 1 relies on a sophisticated gas path design. The oxygen outlets (first oxygen outlet 1212 and second oxygen outlet 1222) of the first adsorption tower 121 and the second adsorption tower 122 are respectively connected to the two side inlets of a three-way valve 141 through a first tube 143 and a second tube 144 (both nylon or silicone tubes). The exhaust port of the three-way valve 141 is connected to the inlet of a check valve 142 through a third tube 145, and the outlet of the check valve 142 then flows into the total oxygen output channel through a fourth tube 146.

[0057] This combination of "three-way valve 141 + check valve 142" constitutes the alternating oxygen output assembly 14.

[0058] Its working principle is as follows: when high-pressure air enters the first adsorption tower 121 to produce oxygen, the oxygen produced opens the check valve 142 and is output; at the same time, the second adsorption tower 122 is in the exhaust state, its outlet pressure is low, and one side of the three-way valve 141 connected to the outlet is closed or in a low-pressure state, and the check valve 142 prevents the airflow from reversing.

[0059] After the reversing valve 13 is switched, the roles are reversed, so that oxygen can be continuously output from the same outlet channel regardless of which tower is working.

[0060] In addition, a flow-limiting structure 15 is provided at the oxygen outlet or the exhaust port of the three-way valve 141. In this embodiment, a flow-limiting device is preferably provided (three of them are provided: at the first oxygen outlet 1212, the second oxygen outlet 1222, and between the top outlet of the three-way valve 141 and the inlet of the check valve 142). Its functions are twofold: first, to stabilize the oxygen output flow rate; and second, at the moment of nitrogen removal during desorption in the adsorption tower, because the pressure inside the tower is lower than the pressure in the outlet passage, a small amount of oxygen will flow back into the tower that is undergoing desorption through the flow-limiting device. This weak backflush airflow can help remove residual nitrogen molecules in the molecular sieve, playing a "regeneration and cleaning" role and maintaining the adsorption efficiency of the molecular sieve.

[0061] It should be noted that the flow-limiting structure 15's restriction on oxygen flow is designed in conjunction with system parameters such as the switching cycle of the reversing valve 13, the air supply of the air compressor 11, and the filling amount and height-to-diameter ratio of the molecular sieve in the adsorption tower. This coordinated design ensures that a reverse cleaning airflow with suitable flow rate and pressure is formed at the instant of nitrogen desorption in the adsorption tower. This allows for efficient regeneration of the molecular sieve without affecting continuous oxygen production, guaranteeing the long-term stability and oxygen purity of the entire dual-tower parallel circulating oxygen generation system.

[0062] Compared to simple single-tower intermittent oxygen production systems or systems with imperfect gas path designs, this solution achieves truly continuous and stable oxygen output through the parallel connection of two towers and the use of precise valves and flow-limiting components. Furthermore, the ingenious backflushing design extends the service life of the core material, molecular sieve, and improves the long-term reliability of the system.

[0063] The control module 4 is the brain that coordinates the intelligent and safe operation of the entire device. The control module 4 has an interaction unit, which includes physical buttons (such as power switch, mode selection button, timer button, power / oxygen flow adjustment button, which can be designed as touch buttons in actual design) on the panel of the upper cover 52, and can be equipped with an infrared remote control receiver.

[0064] The display unit 42 is an OLED screen that displays the current working mode (such as "oxygen-enriched steam", "humidification only", "medicinal fumigation"), the set countdown time, the current power level, the oxygen switch status, and fault codes in real time. The core of the control module 4 is a microprocessor (MCU), which receives instructions from the interaction unit and collects various sensor signals, including the oxygen concentration sensor (range 0-100%, accuracy ±2%) and temperature sensor in the mixing chamber, the water level sensor in the medium generation module 2, and the pressure sensor on the nitrogen output pipeline.

[0065] The MCU executes operating logic based on this information: for example, in the "oxygen-enriched steam" mode, it simultaneously starts the oxygen generation module 1 and the steam generation module; if the oxygen concentration in the tent (via an external probe) is detected to be below 22%, it automatically increases the power of the air compressor 11 or adjusts the timing of the reversing valve 13 to increase oxygen production; if the heating temperature is detected to exceed 110°C or the nitrogen branch pressure is insufficient, it immediately reduces the heating power or cuts off the heating power supply and issues an audible and visual alarm.

[0066] Compared to outdated control methods that rely on simple mechanical timers or knobs, this solution introduces multi-parameter sensing and intelligent closed-loop control algorithms, enabling the device to dynamically adapt to the usage environment and user needs. While ensuring comfortable therapeutic effects, it also constructs a multi-layered safety protection network, achieving a leap from "manual operation" to "intelligent management".

[0067] Specifically, in this embodiment, the structural layout of the device fully considers heat dissipation, maintenance, and safety. The air compressor 11, reversing valve 13, solenoid valve, and other heat-generating and core pneumatic components are centrally located within the spacious and well-ventilated lower cover 53. The electric heating element 212 is also located within the lower cover 53, and an independent protective cavity (metal shield) can be designed around it.

[0068] A crucial safety design feature is that the nitrogen discharged from the oxygen generation module 1 is not directly vented, but rather guided through a dedicated nitrogen output pipe into the interior space of the lower cover 53, particularly the area where the electric heating element 212 is located and the electrical control box containing high-voltage components such as the power board and relays. The continuously supplied nitrogen creates an inert atmosphere in these enclosed or semi-enclosed spaces, reducing the local oxygen concentration to below 10%, thus eliminating the possibility of arcing or high-temperature ignition at the source.

[0069] The electrical control box has an IP54 sealing rating, effectively preventing dust and water vapor damage. Compared to traditional physiotherapy equipment that neglects internal electrical safety, especially given the increased risks in high humidity and high temperature environments, this solution creatively turns self-produced nitrogen into a valuable resource for active inerting and explosion protection in critical areas within the system. This approach has not yet been publicly seen in related fields, achieving true "intrinsically safe" design and significantly enhancing the product's safety level and market competitiveness.

[0070] In this embodiment, the hybrid generator is equipped with an intelligent safety monitoring and alarm system, which consists of a distributed sensor array, an integrated control module 4, a variety of alarm actuators, and a local human-machine interface.

[0071] The sensor array consists of two main parts: one part is deployed inside the therapy tent or target space, and the other part is integrated into the main body of the device. Inside the tent, a multi-functional environmental monitoring probe is typically installed on its top or upper side wall. This probe integrates a digital temperature and humidity sensor (such as SHT35, temperature measurement range -40-125℃, accuracy ±0.2℃, humidity accuracy ±2%RH), an electrochemical oxygen sensor (range 0-100%, accuracy ±1%), and an optional NDIR-based CO2 sensor (range 0-5000ppm). These sensors communicate with the main control module 4 via a shielded cable or a wireless module (such as Zigbee) to collect environmental data in real time.

[0072] The sensors at the device end are directly integrated into the key modules: a water level sensor (usually float-type or capacitive) is embedded in the side wall of the steam generator module's kettle to detect water shortage; a platinum resistance thermometer (PT100) or thermocouple is installed close to the heating element to monitor its actual operating temperature; two pressure sensors (range 0-0.6MPa, accuracy ±0.5%FS) are installed at the outlet of the oxygen buffer tank ( Figure 8 Monitor the gas pressure on the main pipeline of the gas tank (as shown) and nitrogen distribution pipeline to ensure it is normal.

[0073] The gas tank is specifically located between the oxygen generation module 1 and the medium generation module 2, preferably between the oxygen output port and the throttling device. It has an internal cavity and inlet and outlet connectors at both ends. When the oxygen generation module 1 is operating, due to the alternating adsorption and desorption cycle of the dual towers (e.g., 8 cycles per minute), the directly output oxygen flow rate and pressure exhibit periodic small fluctuations or pulses. These pulsating airflows enter the gas tank, where the cavity volume acts as a "gas capacity," absorbing pressure peaks and filling flow troughs, thereby transforming the unstable pulsating flow into a stable, continuously flowing laminar output.

[0074] A smooth airflow reduces pressure surges, extending the lifespan and measurement accuracy of components such as oxygen concentration sensors, pressure sensors, and precision flow control valves installed downstream of the gas tank.

[0075] Compared to designs that directly deliver pulsed oxygen into the mixture without a buffer, this solution significantly improves the uniformity and stability of the mixed gas, avoiding fluctuations in airflow or concentration perceived by the user. This ensures that the oxygen concentration in the therapeutic environment (such as inside a tent) is maintained at a high precision level within the set target range (e.g., 30% ± 2%), thereby enhancing the reliability and comfort of the therapeutic effect.

[0076] All sensor signals are acquired and processed by the microprocessor (MCU) on the main control board. The alarm actuator includes a built-in piezoelectric buzzer, a red / yellow / green tri-color LED indicator array, and a speaker driven by a voice synthesis chip. The local display uses a 2.4-inch OLED screen, fixed to the top cover panel of the main unit.

[0077] The MCU has a built-in robust alarm logic program: When the temperature sensor inside the tent receives data exceeding 70°C, the buzzer is immediately triggered to sound at a frequency of approximately 2kHz, the red LED flashes rapidly at a frequency of 1Hz, and a command is sent to the relay control circuit to cut off the power supply to the electric heating element 212. When the oxygen sensor reading is below 20%, the MCU calls the voice chip to play a pre-recorded "Insufficient oxygen, increasing oxygen supply" prompt. At the same time, it increases the air compressor speed or adjusts the cycle of PSA reversing valve 13 through the PID algorithm to increase the oxygen output flow rate by 20%-50%. When the oxygen concentration exceeds the safety limit, the system will issue a more urgent "Oxygen-rich danger, please ventilate" warning voice and immediately shut off the oxygen output solenoid valve of the oxygen generation module. At the same time, if the system is connected to a ventilation fan, the fan will be started to perform forced ventilation. When the nitrogen pressure sensor reading is lower than the set safety threshold, it indicates that the inerting protection gas supply is insufficient. At this time, the yellow LED will remain on, and the MCU will lock the heating function. Even if the user turns on the device, the heating command will not be executed, thus preventing the activation of high-risk components without nitrogen protection.

[0078] The OLED screen continuously displays real-time information inside the tent, including O2 concentration (e.g., "O2: 32%)", temperature (e.g., "T: 46℃"), humidity (e.g., "H: 82%), current operating mode (e.g., "Mode: Oxygen-enriched Steam"), and remaining treatment time (e.g., "Remaining: 25:00"). Compared to existing physiotherapy equipment that only has single protection functions such as overheating power-off, this solution constructs an active safety monitoring network based on multi-parameter fusion sensing.

[0079] It can not only intervene when danger occurs (such as overheating), but also provide early warning and proactive adjustment before risks emerge (such as lack of oxygen in the environment or insufficient explosion-proof gas) by monitoring two key indicators: oxygen concentration and nitrogen pressure. This upgrades traditional passive protection to a full-process proactive safety management of "monitoring-early warning-intervention", which significantly improves the system safety level and user peace of mind in complex physiotherapy environments.

[0080] Preferably, the assembly and user interaction details of the device have also been optimized. The upper cover 52 is securely fastened to the main housing 51 by a linkage lock 54 (spring-loaded latch design) to prevent accidental opening that could lead to steam leakage or contact with internal components. When it is necessary to add water to the kettle or add the aromatherapy box, simply press the unlock button to easily open the lid. The handle features an ergonomic curved design that folds flush with the upper cover and provides a secure grip when pulled up.

[0081] All pipe connections utilize quick-connect fittings for convenient production assembly and subsequent maintenance and replacement. Compared to similar products that often neglect user experience and ease of maintenance, this solution demonstrates meticulous consideration in industrial design, human-computer interaction, and maintainability, resulting in a product that is not only high-performing but also easy to use and maintain, thus enhancing overall product quality and user satisfaction.

[0082] Specifically, in this embodiment, the system's workflow embodies a high degree of intelligence and integrated collaborative control. Taking the "oxygen-enriched fumigation mode" as an example, its workflow begins with remote interaction by the user.

[0083] The user first places the herbal medicine bag containing mugwort and other herbs into the detachable medicine box, and then pushes the medicine box into the special slot on the side of the main unit, so that the medicine box is connected in series in the steam pipe.

[0084] Next, the user opens the device's water tank cap and fills it with about 1 liter of purified water up to the "MAX" mark.

[0085] Then, the user opens the accompanying APP on their smartphone, selects the "Oxygen-Enriched Herbal Fumigation" mode icon in the graphical main interface, and a sub-menu pops up to allow the user to confirm the treatment duration (e.g., slide to select "30 minutes") and heating level (e.g., select "High" corresponding to 1600W).

[0086] After clicking "Start", the APP will pop up a secondary confirmation dialog box: "Confirm to start the oxygen-enriched fumigation mode?" After the user confirms again, the command is sent to the host control module 4 via Wi-Fi (2.4GHz) or Bluetooth 5.0 wireless network.

[0087] After receiving the instruction, the control module 4 does not execute it immediately, but first initiates a comprehensive system self-test: the MCU reads the water level sensor signal, and if the water level is higher than the minimum limit, it returns "OK"; it reads the nitrogen and oxygen pressure sensor signals, and after confirming that the pressure is within the normal range (such as both being higher than 0.12MPa), it returns "OK"; in addition, the system can also detect the "door is closed" safety signal through a reed switch or infrared sensor installed at the tent door curtain.

[0088] Once all self-inspection items pass, the control process officially begins.

[0089] The MCU first drives the relay to start the air compressor 11 and reversing valve 13 of the oxygen generation module 1. The oxygen generation module 1 then begins to operate, producing oxygen with a purity of approximately 85%-93% and nitrogen with a purity higher than 95%. The oxygen is delivered to the mixing chamber to wait. At the same time, nitrogen is sent through a branch pipeline controlled by a solenoid valve, one path leading to the electric heating element 212 at the bottom of the kettle, and the other path leading to the electrical control box, quickly replacing the air there and establishing an inert atmosphere.

[0090] Immediately afterwards, the MCU controls the relay to engage, and the 1600W heating element (composed of two heating wires connected in parallel, one 600W and the other 1000W) begins to heat the water tank at full power. After about 2-3 minutes, the water boils and produces saturated steam. The steam flows through the medicine box, carrying out the effective components of the mugwort (such as volatile oils) to form medicinal vapor.

[0091] The drug vapor enters the mixing chamber and is initially mixed with oxygen from oxygen generation module 1 at a certain volume ratio (for example, through chamber structure design or flow meter to roughly control oxygen: vapor ≈ 1:3, or manual knob flow regulating valve, or automatic electronic flow regulating valve).

[0092] The mixed oxygen-enriched drug vapor is sent to the top of the tent through a high-temperature resistant silicone gas pipe and is evenly dispersed by a porous diffuser.

[0093] During operation, temperature, humidity, and oxygen sensors inside the tent continuously transmit data back. The control algorithm within the MCU compares this data with set values ​​(temperature 45℃, humidity 85%, oxygen concentration 25-40%), and dynamically fine-tunes the heating power (PWM power adjustment) and oxygen output flow (adjusting the air compressor or valve) to maintain a stable therapeutic environment.

[0094] If the user feels too hot during the process, they can directly click on the "humidification only" mode on the APP. The MCU will immediately turn off the electric heating element and start the ultrasonic nebulizer at the same time. The system will seamlessly switch to producing cool and moist oxygen-rich mist. This process does not require the user to get up and operate the device.

[0095] When the 30-minute timer expires, the MCU first shuts down the air compressor 11 of the electric heating element and oxygen generation module 1, but the solenoid valve on the nitrogen line remains open, continuing purging for another 5 minutes. This continuous flow of nitrogen helps cool the high-temperature heating element and ensures that the electrically hazardous area remains inert throughout the cooling process until the equipment temperature drops completely to a safe range.

[0096] Compared to traditional equipment that requires users to manually operate multiple switches, making precise process control difficult and lacking in safe post-treatment procedures, this solution integrates complex multi-module collaborative work, closed-loop environmental adjustment, seamless mode switching, and safe post-treatment into a smooth automated process through preset intelligent programs. Users only need a simple click on the app to enjoy a complete set of high-quality physiotherapy services, from automatic preparation and safe operation to intelligent termination. This significantly lowers the barrier to entry, improves ease of operation, process stability, and terminal reliability, achieving an upgrade in experience from a "functional device" to an "intelligent physiotherapy service system."

[0097] Preferably, the device of the present invention is particularly suitable for improving the air environment in small, enclosed spaces such as tents and car cabins, solving the problem of oxygen concentration drop (hypoxia) caused by human respiration. These spaces have limited volume and relatively good airtightness. When used for sauna therapy, long-distance driving rest, or temporary outdoor accommodations, the oxygen concentration can drop from the normal range to below the safety warning line after only one or two adults have stayed there for half an hour to two hours, causing symptoms of hypoxia such as dizziness, chest tightness, and fatigue, posing a clear safety and health hazard.

[0098] To enable the application of this device in such scenarios, its deployment method is as follows: The main frame is designed to be compact and portable. For automotive scenarios, the device can be fixedly placed in the trunk or under the passenger seat, and its power input is adapted to the vehicle's 12V / 24V cigarette lighter interface so that it can be powered by the battery when the vehicle is in motion or parked.

[0099] For tent scenarios, the device can be placed inside a waterproof cover on the outside of the tent or in a corner inside the tent, powered by a built-in battery or an external portable power source. The device's mixed gas output port is connected to the interior of the sealed space via a flexible, weather-resistant gas delivery tube. A silent, porous diffuser can be connected to the end of the gas delivery tube and placed in the upper part of the space to achieve uniform and gentle diffusion of the gas.

[0100] In actual use, when the user turns on the device and selects "enriched oxygen in a closed space" or a similar mode, the control module 44 activates the PSA oxygen generator to continuously produce oxygen-enriched gas at a moderate flow rate. Simultaneously, the medium generation module 22 can work collaboratively according to user needs: if dehumidification or maintaining a cool environment is required, the oxygen generator function can be activated independently; if sauna therapy is needed, the steam generator function will be activated simultaneously to produce warm, oxygen-enriched steam; if a refreshment or sleep aid is needed, the aromatherapy function can be activated to atomize aromatherapy essential oils and mix them with oxygen for output.

[0101] The device has a built-in or placed oxygen concentration sensor in the space to monitor the ambient oxygen content in real time. The control module 44 dynamically adjusts the oxygen production flow rate based on the feedback to always maintain the oxygen concentration in the space within a safe and comfortable range.

[0102] Compared to existing technologies, such enclosed spaces either rely entirely on limited external ventilation (which is ineffective and subject to environmental constraints) or can only provide a single function (such as humidification or oxygen production only). This invention, for the first time at the portable device level, achieves integrated, intelligent, and on-demand control of oxygen concentration and environmental factors (temperature, humidity, fragrance) within a small, enclosed space. This not only fundamentally prevents the risk of oxygen deficiency but also proactively creates a healthy, comfortable, and safe microenvironment through the combination of oxygen enrichment with steam, aromatherapy, and other methods, greatly enhancing the user experience and safety in scenarios such as in-vehicle rest, saunas (outdoor or indoor), and emergency shelters.

[0103] Specifically, taking a more precise and optimized in-vehicle nighttime rest scenario as an example: The user parks the vehicle in a safe location. The main unit is placed in the trunk, roof box, or fixed to a safe position on the vehicle's chassis via a bracket. If placed in the trunk, its oxygen-enriched output hose passes through the trunk lid gap (equipped with an anti-pinch sealing sleeve) and enters the passenger compartment, with the diffuser placed in the rear seat; the nitrogen exhaust hose extends rearward to the underside of the vehicle.

[0104] The user sets the running time to 2 hours, selects the "Oxygen-Enriched + Sleep-Aid Aromatherapy" mode, and confirms. The device starts working, with the oxygen-generating module 11 continuously separating oxygen from the ambient air outside the vehicle, while simultaneously venting the separated nitrogen directly into the outside atmosphere through the exhaust pipe. The oxygen-enriched stream mixes with the atomized aromatherapy ingredients and is actively pumped into the completely sealed vehicle compartment through a hose.

[0105] Throughout the rest period, the device ensures that the oxygen concentration inside the vehicle remains within a safe range, effectively preventing the risk of hypoxia, while also creating a suitable aromatic environment. The entire process does not require opening the windows, avoiding interference from external hot or cold air, noise, and dust, and also ensuring the efficiency of the air conditioning or heating system.

[0106] Compared to existing technologies, such enclosed spaces either rely entirely on limited and environmentally constrained natural ventilation or on single-function devices (such as oxygen generators or humidifiers).

[0107] This invention, for the first time at the system level, achieves integrated, intelligent, and proactive on-demand control of oxygen concentration and environmental factors (temperature, humidity, fragrance) within a confined space through an integrated design that includes an external host unit, pipeline connections, and exhaust gas venting, while strictly maintaining the airtightness of the space. This not only fundamentally prevents the risk of oxygen deficiency but also creates a safe, comfortable, independent, and controllable microenvironment solution for scenarios such as in-vehicle rest, saunas (outdoor or indoor), emergency shelters, and mobile medical care.

[0108] It should be noted that this device is preferably used to stably deliver oxygen to enclosed spaces, ensuring that the internal oxygen concentration is maintained within a set range. However, it can also be applied to non-enclosed or well-ventilated spaces (such as medical rehabilitation rooms, offices, or home environments) as needed, to increase the oxygen content in the air through localized oxygen supply, thereby improving the breathing environment.

[0109] The above description is only a preferred embodiment of the present invention. For those skilled in the art, there will be changes in the specific implementation and application scope based on the ideas of the present invention. The content of this specification should not be construed as a limitation of the present invention.

Claims

1. An oxygen multi-medium mixed generation device, characterized in that: The system includes an oxygen generation module (1), a medium generation module (2), a medium mixing module (3), and a control module (4) electrically connected to each module. The oxygen generation module (1) includes an air compressor (11) and an adsorption component (12). The adsorption component (12) is filled with molecular sieves. The air compressor (11) supplies high-pressure air to the adsorption component (12). The adsorption component (12) adsorbs nitrogen from the high-pressure air under pressure to enrich oxygen and discharge it to the medium mixing module (3). The medium generation module (2) generates a non-oxygen medium flow and outputs it to the medium mixing module (3). The medium mixing module (3) mixes the oxygen and non-oxygen medium flows and outputs them to the external space. The control module (4) adjusts the oxygen production of the oxygen generation module (1), the output of the medium generation module (2), and the mixing ratio of the oxygen and non-oxygen medium flows according to environmental parameters or user instructions.

2. The oxygen polytropic medium mixing generating device according to claim 1, characterized in that: The medium generating module (2) is one or more combinations of a steam generating module, an atomizing module, an aromatherapy module, a medicinal fumigation module, and an evaporator.

3. The oxygen polytropic medium mixing generating device according to claim 1 or 2, characterized in that: The adsorption assembly (12) includes a first adsorption tower (121) and a second adsorption tower (122) connected in parallel. Both the first adsorption tower (121) and the second adsorption tower (122) are filled with molecular sieves for adsorbing nitrogen. The first adsorption tower (121) has a first air inlet channel and a first oxygen outlet (1212). The second adsorption tower (122) has a second air inlet channel and a second oxygen outlet (1222). The oxygen generation module (1) also includes a reversing valve (13) disposed between the first air inlet channel and the second air inlet channel. The reversing valve (13) is connected to the air compressor (11) to allow the high-pressure air output by the air compressor (11) to alternately enter the first air inlet channel and the second air inlet channel. When the air compressor (11) delivers high-pressure air to the first adsorption tower (121) via the reversing valve (13) for adsorption and oxygen production, the second adsorption tower (122) depressurizes and desorbs nitrogen. When the air compressor (11) delivers high-pressure air to the second adsorption tower (122) via the reversing valve (13) for adsorption and oxygen production, the first adsorption tower (121) depressurizes and desorbs nitrogen, so that the first adsorption tower (121) and the second adsorption tower (122) produce oxygen in sequence to achieve oxygen cycle output.

4. The oxygen multi-media mixing and generating device according to claim 3, characterized in that: The oxygen generation module (1) further includes an alternating oxygen output component (14) disposed between the first oxygen outlet (1212) and the second oxygen outlet (1222). The alternating oxygen output component (14) includes a three-way valve (141) and a check valve (142) connected to the three-way valve (141). The two side ports of the three-way valve (141) are respectively connected to the first oxygen outlet (1212) and the second oxygen outlet (1222). The exhaust port of the three-way valve (141) forms an oxygen output channel through the check valve (142).

5. The oxygen multi-media mixing and generating device according to claim 4, characterized in that: The alternating oxygen output assembly (14) further includes a first tube (143), a second tube (144), a third tube (145), and a fourth tube (146); one end of the first tube (143) is connected to the first oxygen outlet (1212), and the other end of the first tube (143) is connected to a side port of a three-way valve (141); one end of the second tube (144) is connected to the second oxygen outlet (1222), and the other end of the second tube (144) is connected to the other side port of the three-way valve (141); the third tube (145) is connected between the exhaust port of the three-way valve (141) and the inlet port of the check valve (142); the exhaust port of the check valve (142) is connected to one end of the fourth tube (146); and the other end of the fourth tube (146) constitutes the oxygen output channel.

6. The oxygen multi-media mixing and generating device according to claim 4, characterized in that: The check valve (142) is configured to allow oxygen to flow only in the output direction of the oxygen output channel, so as to prevent oxygen or external medium from flowing back in the opposite direction to the three-way valve (141), the first adsorption tower (121) and the second adsorption tower (122).

7. The oxygen multi-media mixing and generating device according to claim 4, characterized in that: The oxygen generation module (1) also includes a flow limiting structure (15), which is set at the oxygen outlet and / or the exhaust port of the three-way valve (141) to limit the oxygen flow rate, so that when the adsorption component (12) desorbs and removes nitrogen, a reverse airflow is formed to reverse clean the molecular sieve.

8. The oxygen multi-media mixing and generating device according to claim 1, characterized in that: The oxygen generation module (1) also includes a filter assembly (16), which is located at the air intake end of the air compressor (11) to filter dust, particulate matter and impurities in the outside air.

9. The oxygen multi-media mixing and generating device according to claim 1, characterized in that: The molecular sieve is a zeolite molecular sieve or a carbon molecular sieve, and the zeolite molecular sieve includes one or more combinations of 5A type molecular sieve, 13X type molecular sieve, mordenite zeolite, and lithium-exchange low-silica X type molecular sieve.

10. The oxygen multi-media mixing and generating device according to claim 1, characterized in that: The control module (4) includes an interaction unit and a display unit (42). The interaction unit is used to receive start, stop, gear selection and timing instructions from the user. The display unit (42) is used to display the operating status, timing time and working gear of the mixing device. The control module (4) controls the start, stop and operating power of the oxygen generation module (1) and the medium generation module (2) according to the instructions of the interaction unit, and provides feedback on the current working status through the display unit (42) during operation.

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