A building heat and humidity oxygen combined supply device and method based on annular oxygen premixing and hot water spraying wet membrane

Abstract

This invention discloses a building heat, humidity, and oxygen co-supply device and method based on annular oxygen premixing and hot water spray wet film, relating to the field of air conditioning technology. The device includes a pipe body with an air inlet and an air outlet at each end. An annular oxygen distribution component is installed on the inner wall of the air inlet. This component includes an annular flow equalization pipe with an oxygen inlet, and multiple centripetal injection holes are formed in the pipe wall to achieve radial premixing of oxygen. A porous medium layer is arranged downstream of the airflow inside the pipe, with a hot water distribution nozzle assembly above it. The hot water distribution nozzle assembly is connected to a water circulation heating system via a water supply pipeline. This system includes a water tank with a built-in water pump and heating device, forming a hot water circulation supply. This invention achieves radial premixing of oxygen through an annular oxygen supply pipeline and, combined with the heat and humidity transfer process of the hot water spray wet film, simultaneously completes heating, humidification, and oxygenation functions in a single pipe structure, featuring a compact structure, uniform mixing, and high energy efficiency.

Description

Technical Field

[0001] This invention belongs to the field of air conditioning technology, specifically relating to a building heat, humidity and oxygen supply device and method based on annular oxygen premixing and hot water spray wet film. Background Technology

[0002] In high-altitude regions of China, such as Tibet and Qinghai, the climate is generally characterized by a combination of dryness and cold. This extreme environment poses a severe challenge to human comfort and health. First, low air pressure leads to thin air and low oxygen partial pressure, making people prone to altitude sickness and requiring additional oxygen. Second, the absolute humidity in high-altitude areas is extremely low, and the extremely dry air can cause skin chapping, respiratory discomfort, and other problems, making indoor humidification essential for maintaining health. Third, the frigid conditions result in low ambient temperatures. In low-temperature environments, even with humidification equipment, the evaporation rate of water is significantly reduced, leading to inefficient humidification that fails to meet the needs of both humans and the environment.

[0003] Currently, to address these issues, people typically use a combination of multiple independent devices. The most common approach to meeting these needs through a patchwork appliance solution involves purchasing three separate appliances: an electric heater to combat low temperatures, an oxygen concentrator to address low-pressure hypoxia, and a humidifier to combat dryness. However, this solution suffers from fatal technical conflicts and energy waste: First, there's the conflict between heat and humidity: when an electric heater, such as a small electric heater, is operating, it drastically reduces the relative humidity of already dry indoor air, further exacerbating dryness. Meanwhile, the humidifier emits "cold water mist," which absorbs indoor heat during evaporation, creating latent heat of vaporization that directly counteracts the heating effect of the electric heater, leading to fluctuating body temperatures and high energy consumption. Second, there's the conflict between energy consumption: oxygen concentrators, electric heaters, and humidifiers are all high-energy-consuming devices. In high-altitude areas with unstable power grids, simultaneous operation can easily cause circuit overload, rendering them unusable, and incurring high operating costs. Third, there's the issue of control isolation: the three devices operate independently without communication, preventing coordinated control and resulting in drastic fluctuations in environmental parameters, making true "constant comfort" impossible.

[0004] Existing technology proposes a "humidification and oxygenation type hot air supply device." This solution attempts to solve the problem within a single air duct, but its technical approach is relatively rudimentary: its humidification method involves passively immersing the end of a Cydex wet membrane into a water storage tank. However, in high-altitude and frigid environments, the evaporation efficiency of cold circulating water is extremely low, rendering this passive cold water humidification capacity negligible and unable to meet the strong humidification demands of high-altitude winters. Its oxygen production method involves adding hydrogen peroxide and manganese dioxide to the water storage tank. However, this chemical oxygen production method not only results in unstable oxygen production and difficulty in precise control, making it impossible to meet the body's needs on demand, but also requires frequent manual addition of chemicals, making operation cumbersome and posing safety hazards. Although this solution points to the direction of "heat, humidity, and oxygen coupling," its passive humidification and chemical oxygen production technologies result in significant shortcomings in efficiency, safety, and integration. Summary of the Invention

[0005] The purpose of this invention is to overcome the technical problems of large equipment space occupation, uneven humidification and cooling, and uneven oxygen mixing in the prior art, and to provide a building heat, humidity and oxygen combined supply device and method based on annular oxygen premixing and hot water spray wet film.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: In a first aspect, the present invention provides a building heat, humidity and oxygen supply device based on annular oxygen premixing and hot water spray wet film, including a pipe body, with an air inlet and an air outlet respectively provided at both ends of the pipe body, and an annular oxygen distribution component embedded in the inner wall of the pipe body at the air inlet, the annular oxygen distribution component including an annular flow equalization pipe, an oxygen inlet provided on the annular flow equalization pipe, and a plurality of centripetal injection holes opened on its inner circumferential surface. A porous media layer is disposed within the pipe body downstream of the airflow of the annular oxygen distribution assembly, and a hot water distribution nozzle assembly is disposed above the porous media layer. The hot water distribution nozzle assembly is connected to the water circulation heating system via a water supply pipeline. The water circulation heating system includes a water tank, a water pump installed inside the water tank, and a heating device. The outlet of the water pump is connected to the water supply pipeline.

[0007] A further improvement of the present invention is that the porous media layer is installed on the inner wall of the pipe body by a fixing component.

[0008] A further improvement of the present invention is that the porous medium layer covers the entire cross-section of the pipe body.

[0009] A further improvement of the present invention is that the axial direction of the centripetal injection hole forms an acute angle with the main airflow direction of the pipe body.

[0010] A further improvement of the present invention is that a water recovery port is provided at the bottom of the pipe body.

[0011] A further improvement of the present invention is that the recycling inlet is located directly below the porous medium layer and is connected to the water tank through a return pipeline.

[0012] A further improvement of the present invention is that it also includes a monitoring terminal, which includes a temperature, humidity and oxygen concentration composite sensor installed at the air outlet of the pipe body, and an electric valve installed on the water supply pipeline; the monitoring terminal is signal connected to the temperature, humidity and oxygen concentration composite sensor, the electric valve and the heating device.

[0013] A further improvement of the present invention is that the porous medium layer is a hydrophilic porous medium layer.

[0014] Secondly, the present invention also provides a method for combined heat, humidity and oxygen supply in buildings based on annular oxygen premixing and hot water spray wet film, comprising the following steps: S1, oxygen is supplied to the annular oxygen distribution assembly through the oxygen inlet, and the oxygen is injected into the center of the pipe through the centripetal injection hole, and is initially mixed with the air entering from the air inlet to form an oxygen-rich flow; S2, the water circulation heating system is started, and the water pump delivers the hot water heated by the heating device in the water tank to the hot water distribution nozzle assembly; S3, the hot water distribution nozzle assembly sprays hot water onto the surface of the porous media layer below; S4, when the oxygen-enriched airflow flows through the porous media layer, it exchanges heat and moisture with the hot water film attached to the surface of the porous media layer, thereby achieving heating and humidification of the air and secondary uniform mixing of oxygen. S5, the treated air is sent out through the air outlet.

[0015] A further improvement of the present invention is that, in step S5, air parameters are monitored by a composite sensor of temperature, humidity and oxygen concentration installed at the air outlet and fed back to the monitoring terminal, which adjusts the opening of the electric valve and / or the power of the heating device accordingly.

[0016] Compared with the prior art, the present invention has the following beneficial effects: This invention provides a building heat, humidity, and oxygen co-supply device based on annular oxygen premixing and hot water spray wet film. The device employs an annular oxygen distribution component embedded in the inner wall of the air inlet of the pipeline. Multiple centripetal injection holes on the annular flow equalization pipe achieve concentrated oxygen injection towards the center of the pipeline. This multi-point array injection structure causes the oxygen jet to generate intense turbulent mixing with the mainstream air, completing the initial uniform mixing of oxygen and air within a very short distance. This effectively shortens the mixing section length required for oxygen diffusion in traditional pipelines, improving mixing efficiency. The water circulation heating system in the device integrates the water pump and heating device inside the water tank. Hot water heated to a suitable temperature is evenly sprayed onto the surface of the downstream porous media layer through the hot water distribution nozzle assembly. When the airflow passes through this moist porous media layer, the heat and humidity exchange process between the hot water film and the air simultaneously transfers sensible and latent heat. This "heat-humidification" mechanism overcomes the problem of air temperature drop caused by the absorption of heat during water evaporation in traditional cold water humidification, achieving simultaneous improvement of air temperature and humidity. The entire device highly integrates oxygen premixing, air heating and humidification functions into a single pipeline structure. The components work together organically, which not only significantly reduces the size of the equipment and improves space utilization, but also achieves efficient energy utilization through hot water recycling, resulting in a comprehensive effect of compact structure, energy saving and environmental protection.

[0017] This invention also provides a building heat, humidity, and oxygen co-supply method based on annular oxygen premixing and hot water spray wet film. This method achieves rapid initial mixing of oxygen and air through the centripetal injection of annular oxygen distribution components, combined with the non-insulating humidification mechanism of the hot water spray wet film, synergistically completing the oxygenation, heating, and humidification processes within an integrated pipeline. The key design feature is the use of 50-65℃ hot water sprayed onto a porous media layer, enabling the simultaneous transfer of sensible and latent heat during heat and moisture exchange, effectively overcoming the temperature drop problem caused by traditional cold water humidification and ensuring a stable increase in supply air temperature. The porous media layer not only provides a large contact area to promote heat and moisture exchange, but its turbulence characteristics also achieve secondary deep mixing of oxygen. The entire method integrates these three functions in an orderly manner, possessing significant advantages such as uniform mixing, high energy efficiency, and compact structure, making it particularly suitable for meteorological support in special environments such as high-altitude areas. Attached Figure Description

[0018] The accompanying drawings described herein are for illustrative purposes only and are not intended to limit the scope of the invention in any way. Furthermore, the shapes and proportions of the components in the drawings are merely illustrative to aid in understanding the invention and do not specifically limit the shapes and proportions of the components of the invention.

[0019] Figure 1 This is a three-dimensional schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the overall structure of the present invention; Figure 3 This is a schematic diagram of the oxygen inlet structure in this invention; Figure 4 This is a schematic diagram of the centripetal injection hole structure in this invention; Figure 5 This is a schematic diagram of the hot water distribution nozzle assembly structure in this invention; Figure 6 This is a schematic diagram of the structure of the heat and humidity control component in this invention; Figure 7 This is a partially enlarged schematic diagram of the porous dielectric layer and the fixing components in this invention; Figure 8 This is a schematic diagram of the structure and connecting pipelines of the water circulation system in this invention; Figure 9 This is a schematic diagram of the electric valve structure in this invention; Figure 10 This is a schematic diagram of the composite sensor structure for temperature, humidity, and oxygen concentration in this invention.

[0020] The components are: 1-Oxygen inlet; 2-Centrifugal jet orifice; 3-Pipe body; 4-Fixing component; 5-Porous media layer; 6-Hot water distribution nozzle assembly; 7-Electric valve; 8-Water tank; 9-Recovery water inlet; 10-Water pump; 11-Heating device; 12-Combined sensor for temperature, humidity and oxygen concentration. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0022] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0023] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0024] In the description of the embodiments of the present invention, it should be noted that if terms such as "upper," "lower," "horizontal," or "inner" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of the invention is in use, they are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention. Furthermore, terms such as "first" and "second" are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0025] Furthermore, the use of the term "horizontal" does not imply that the component must be absolutely horizontal, but rather that it can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0026] In the description of the embodiments of the present invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in the present invention according to the specific circumstances.

[0027] The present invention will now be described in further detail with reference to the accompanying drawings: like Figure 1 As shown, this invention provides a building heat, humidity and oxygen combined supply device based on annular oxygen premixing and hot water spray wet film. The main body of the device is constructed within the pipe body 3 to define the main airflow channel, with an air inlet and an air outlet respectively provided at both ends. Along the airflow direction, an oxygen supply section, a heat and humidity control section and a monitoring section are sequentially integrated within the pipe body 3 to form an integrated air handling unit.

[0028] In the oxygen supply section, such as Figure 3 and Figure 4 As shown, an annular oxygen distribution component is embedded in the inner wall of the duct body 3 at the air inlet. The annular oxygen distribution component includes an annular flow equalization pipe arranged closely to the inner wall of the duct body 3. An oxygen inlet 1 is provided on the annular flow equalization pipe, and several centripetal injection holes 2 are opened on its inner circumferential surface. An external oxygen source enters the interior of the annular flow equalization pipe through the oxygen inlet 1 and is simultaneously injected centripetally towards the center of the duct through the multiple centripetal injection holes 2. This multi-point array centripetal oblique injection structure forces the oxygen jet to mix violently with the fresh air flowing through the duct, thereby forming a uniformly concentrated oxygen-rich airflow within a very short distance before entering the downstream components.

[0029] In the temperature and humidity control section, such as Figures 5 to 7 As shown, a porous media layer 5 and a hot water distribution nozzle assembly 6 are disposed downstream of the airflow of the annular oxygen supply component. The porous media layer 5 is installed on the inner wall of the pipe body 3 by a fixing component 4 and is configured to fully permeate and cover the cross-section of the pipe body 3. This arrangement forces the oxygen-enriched airflow through the pipe to pass through the micropores inside the medium, expanding the gas-liquid contact surface area while utilizing the turbulence effect of the medium to achieve secondary mixing of oxygen. Specifically, the fixing component 4 can be a groove set on the inner wall of the pipe body 3, and the edge of the porous media layer 5 can be precisely embedded in the groove. This fixing method ensures that the porous media layer 5 remains stable under the impact of airflow, completely covering the cross-section of the pipe, without displacement or vibration, ensuring the uniformity of airflow and the stability of heat and moisture exchange effect. The porous media layer 5 is made of a material with good hydrophilic properties, such as hydrophilic modified ceramics or polymer materials. Hydrophilicity means that water can quickly spread on its surface to form a uniform and continuous water film, rather than agglomerating into water droplets. This characteristic greatly increases the effective evaporation area, allowing hot water to evaporate into the passing dry air more quickly and efficiently, thereby significantly improving the device's humidification capacity and heat exchange efficiency.

[0030] The device is also equipped with a water circulation heating system, such as Figure 8 As shown, the system includes a water tank 8, a water pump 10 installed inside the water tank 8, and a heating device 11. The outlet of the water pump 10 is connected to the hot water distribution nozzle assembly 6 via a water supply pipeline. The heating device 11 is installed inside the water tank 8 to heat the water and maintain the temperature at 50~60℃. Hot water is pumped by the water pump 10 to the hot water distribution nozzle assembly 6, spraying onto the surface of the porous media layer 5 to form a hot and humid water film. When the oxygen-enriched airflow passes through the moist porous media layer 5, the air and the hot water film undergo non-adiabatic humidification exchange, achieving synergistic treatment of heating, humidification, and uniform oxygen mixing. The specific working process is as follows: the water pump 10 starts operating, extracting hot water and delivering it to the hot water distribution nozzle assembly 6. After being sprayed out, the hot water uniformly wets the porous media layer 5 under the action of gravity. When the oxygen-enriched airflow passes through the moist and warm porous media layer 5, the air directly absorbs the heat and moisture from the hot water, achieving a simultaneous increase in temperature and relative humidity. In the above process, the hot water distribution nozzle assembly 6 evenly distributes hot water onto the surface of the porous medium layer 5, constructing a non-adiabatic humidification mechanism based on "synergistic compensation of sensible heat and latent heat." This mechanism utilizes the characteristic that the water temperature is significantly higher than the air wet-bulb temperature, so that when the formed hot and humid water film comes into countercurrent contact with the cold and dry airflow, it not only rapidly humidifies the air using the huge water vapor partial pressure difference, but also transfers sensible heat to the air through the temperature difference. This "heat-based humidification" mode effectively counteracts the evaporative cooling effect of traditional humidification, ensuring that the supply air temperature does not decrease but rather increases.

[0031] To achieve closed-loop utilization of water resources, a recovery inlet 9 is provided at the bottom of the pipeline body 3. The recovery inlet 9 is located directly below the porous media layer 5 and is connected to the water tank 8 via a return pipe. Unevaporated residual water dripping from the porous media layer 5 collects under gravity in the collection trough at the bottom of the pipeline and flows through the recovery inlet 9 into a return pipe, ultimately returning to the water tank 8. This achieves water resource recycling, which is particularly suitable for water-scarce plateau regions, demonstrating the energy-saving and environmentally friendly advantages of the device.

[0032] In the monitoring section, such as Figure 2 , Figure 9 and Figure 10 As shown, the device also includes a monitoring terminal, comprising an electric valve 7 installed on the water pipe of the pipeline body 3; the monitoring terminal is signal-connected to a temperature, humidity, and oxygen concentration composite sensor 12, the electric valve 7, and the heating device 11. The temperature, humidity, and oxygen concentration composite sensor 12 is installed at the pipeline outlet to monitor the temperature, relative humidity, and oxygen concentration of the treated air in real time. The electric valve 7 is connected in series on the water supply pipeline connecting the water pump 10 and the hot water distribution nozzle assembly 6, allowing precise adjustment of the hot water flow rate to the nozzles. The monitoring terminal (such as a PLC or dedicated controller) is connected to the sensor 12, the electric valve 7, and the heating device 11 via signal lines. The monitoring terminal receives monitoring data from the sensor 12 and compares it with the set target parameters, then automatically adjusts the opening degree of the electric valve 7 (controlling the water spray volume) and the power of the heating device 11 (controlling the water temperature) through a control algorithm. This achieves precise and automatic control of the air supply parameters, solves the control island problem of multiple devices operating independently, and ensures constant and comfortable environmental parameters.

[0033] In this embodiment, the axial direction of the centripetal injection hole 2 forms an acute angle with the main airflow direction of the pipe body 3, specifically, it injects oxygen diffusing obliquely towards the center in the direction of airflow. The centripetal injection hole 2 is not radially perpendicular to the pipe axis, but rather its axis forms an acute angle with the pipe axis (i.e., the main airflow direction), for example, 30° to 60°. This oblique injection design gives the oxygen jet a velocity component in the direction of airflow, enabling it to utilize the kinetic energy of the main airflow to assist oxygen diffusion and mixing, reducing injection resistance, further shortening the distance required for complete mixing of oxygen and air, and improving mixing efficiency.

[0034] This invention also provides a method for combined heat, humidity and oxygen supply in buildings based on annular oxygen premixing and hot water spray wet film, comprising the following steps: S1, oxygen is supplied to the annular oxygen distribution component through oxygen inlet 1, and the oxygen is injected into the center of the pipe through centripetal injection hole 2, and is initially mixed with the air entering from the air inlet to form an oxygen-rich flow. S2, start the water circulation heating system, and the water pump 10 delivers the hot water heated by the heating device 11 in the water tank 8 to the hot water distribution nozzle assembly 6. S3, the hot water distribution nozzle assembly 6 sprays hot water onto the surface of the porous media layer 5 below; S4, when the oxygen-enriched air flows through the porous media layer 5, it exchanges heat and moisture with the hot water film attached to the surface of the porous media layer 5, thereby achieving heating and humidification of the air and secondary uniform mixing of oxygen. S5, the treated air is sent out through the air outlet.

[0035] This method supplies oxygen to a ring-shaped distribution component, forming a pre-mixed oxygen-enriched airflow. Simultaneously, a water circulation heating system is activated, spraying preheated hot water onto the surface of the porous media layer 5 to form a hot and humid water film. As the oxygen-enriched airflow passes through the moist and warm porous media layer 5, two key processes occur: first, heat and mass exchange occurs between the air and the hot water film, heating and humidifying the air; second, the turbulence of the porous media promotes secondary mixing of oxygen and air at the microscale, resulting in a more uniform oxygen distribution. Finally, the treated warm, humid, and oxygen-enriched air is delivered. This method highly integrates the three processes of oxygenation, heating, and humidification in time and space, with a rational sequence and efficient synergy.

[0036] In step S5, air parameters are monitored by a composite sensor 12 for temperature, humidity, and oxygen concentration installed at the air outlet, and the data is fed back to the monitoring terminal. The monitoring terminal then adjusts the opening of the electric valve 7 and / or the power of the heating device 11 accordingly. During air supply, the composite sensor 12 at the outlet continuously feeds back the actual temperature, humidity, and oxygen concentration data to the monitoring terminal. The monitoring terminal compares this real-time data with preset target values. If the humidity is too low, the opening of the electric valve 7 is increased to increase the water spray volume; if the temperature is too low, the power of the heating device 11 is increased to raise the water temperature; if oxygen concentration needs adjustment, the flow rate of the oxygen supply source can be controlled in conjunction with the adjustment. This precise control based on real-time feedback can dynamically adapt to changes in the external environment and fluctuations in internal demand, maintaining stable air supply parameters and achieving true intelligent on-demand supply.

[0037] Many embodiments and applications beyond the examples provided will be apparent to those skilled in the art upon reading the foregoing description. Therefore, the scope of this teaching should not be determined by reference to the foregoing description, but rather by reference to the foregoing claims and the full scope of their equivalents. For purposes of completeness, all articles and references, including patent applications and publications, are incorporated herein by reference. The omission of any aspect of the subject matter disclosed herein in the foregoing claims is not intended as a waiver of that subject matter, nor should it be construed as an indication that the applicant has not considered that subject matter as part of the disclosed inventive subject matter.

[0038] The above content provides a further detailed description of the present invention. It should not be construed that the specific embodiments of the present invention are limited to this. For those skilled in the art, several simple deductions or substitutions can be made without departing from the concept of the present invention, and all such deductions or substitutions should be considered to fall within the scope of protection of the present invention as defined by the submitted claims.

Claims

1. A building heat, humidity, and oxygen cogeneration device based on annular oxygen premixing and hot water spray wet film, characterized in that, The pipe body (3) includes an air inlet and an air outlet at both ends. An annular oxygen distribution component is embedded in the inner wall of the pipe body (3) at the air inlet. The annular oxygen distribution component includes an annular flow equalization pipe with an oxygen inlet (1) and several centripetal injection holes (2) on its inner circumferential surface. A porous media layer (5) is provided inside the pipe body (3) downstream of the airflow of the annular oxygen distribution assembly, and a hot water distribution nozzle assembly (6) is provided above the porous media layer (5). The hot water distribution nozzle assembly (6) is connected to the water circulation heating system through a water supply pipeline. The water circulation heating system includes a water tank (8), a water pump (10) installed inside the water tank (8), and a heating device (11). The outlet of the water pump (10) is connected to the water supply pipeline.

2. The building heat, humidity and oxygen cogeneration device based on annular oxygen premixing and hot water spray wet film according to claim 1, characterized in that, The porous medium layer (5) is installed on the inner wall of the pipe body (3) by a fixing component (4).

3. A building heat, humidity, and oxygen cogeneration device based on annular oxygen premixing and hot water spray wet film according to claim 1, characterized in that, The porous medium layer (5) covers the entire cross-section of the pipe body (3).

4. A building heat, humidity, and oxygen cogeneration device based on annular oxygen premixing and hot water spray wet film according to claim 1, characterized in that, The axial direction of the centripetal injection hole (2) forms an acute angle with the main airflow direction of the pipe body (3).

5. A building heat, humidity, and oxygen cogeneration device based on annular oxygen premixing and hot water spray wet film according to claim 1, characterized in that, The bottom of the pipe body (3) is provided with a water recovery port (9).

6. A building heat, humidity, and oxygen cogeneration device based on annular oxygen premixing and hot water spray wet film according to claim 5, characterized in that, The recovery inlet (9) is located directly below the porous medium layer (5) and is connected to the water tank (8) through a return pipeline.

7. A building heat, humidity, and oxygen cogeneration device based on annular oxygen premixing and hot water spray wet film according to claim 1, characterized in that, It also includes a monitoring terminal, which includes a temperature, humidity and oxygen concentration composite sensor (12) installed at the air outlet of the pipe body (3) and an electric valve (7) installed on the water supply pipeline; the monitoring terminal is connected to the temperature, humidity and oxygen concentration composite sensor (12), the electric valve (7) and the heating device (11) via signal connection.

8. A building heat, humidity and oxygen cogeneration device based on annular oxygen premixing and hot water spray wet film according to claim 1, characterized in that, The porous media layer (5) is a hydrophilic porous media layer.

9. A method for using a building combined heat, humidity and oxygen supply device based on an annular oxygen premixing and hot water spray wet film as described in any one of claims 1 to 8, characterized in that, Includes the following steps: S1, oxygen is supplied to the annular oxygen distribution assembly through the oxygen inlet (1), and the oxygen is injected into the center of the pipeline through the centripetal injection hole (2) and initially mixed with the air entering from the air inlet to form an oxygen-rich flow; S2, the water circulation heating system is started, and the water pump (10) delivers the hot water heated by the heating device (11) in the water tank (8) to the hot water distribution nozzle assembly (6). S3, the hot water distribution nozzle assembly (6) sprays hot water onto the surface of the porous media layer (5) below; S4, when the oxygen-enriched flow passes through the porous media layer (5), it exchanges heat and moisture with the hot water film attached to the surface of the porous media layer (5) to achieve heating, humidification and secondary uniform mixing of air; S5, the treated air is sent out through the air outlet.

10. A method for combined heat, humidity, and oxygen supply in buildings based on annular oxygen premixing and hot water spray wet film according to claim 9, characterized in that, In step S5, air parameters are monitored by a composite sensor (12) for temperature, humidity and oxygen concentration installed at the air outlet and fed back to the monitoring terminal. The monitoring terminal adjusts the opening of the electric valve (7) and / or the power of the heating device (11) accordingly.

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