Air sterilization and deodorization integrated device and method based on solar driving

Abstract

The invention discloses an air sterilization and deodorization integrated device and method based on solar energy driving, and aims to solve the problems of high energy consumption, ozone pollution, single function and the like in the existing air purification technology. According to the device, the solar power supply module and the air handling unit are integrated, and efficient, energy-saving and environment-friendly air purification is achieved through the building integrated photovoltaic (BIPV) design. Specifically, the solar power supply module is composed of a photovoltaic panel, an energy storage unit, a controller and an inverter, and the air handling unit comprises an air inlet, a sterilization module, a deodorization module and an air outlet. By deeply coupling solar power supply and an air treatment module and adopting intelligent control logic and an efficient sterilization and deodorization technology, the energy efficiency is remarkably improved, and a space-intensive, safe, reliable and intelligent-linkage air purification solution is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of air purification, and in particular to an integrated air sterilization and deodorization device and method driven by solar energy, which is particularly suitable for air purification and energy self-sufficiency needs in densely built areas. Background Art

[0002] The current air purification field generally relies on grid-powered ultraviolet sterilization or chemical disinfection technology. However, these technologies have many problems, such as high energy consumption, ozone pollution, and single functions. Especially in densely built areas, traditional air purification equipment is difficult to meet the needs of energy self-sufficiency and coordinated treatment of multiple pollutants. Although solar photovoltaic technology has been widely used in building power supply, existing solutions usually only use solar energy as an auxiliary power source and are not deeply coupled with the core air treatment module, resulting in low energy utilization and inability to meet all-weather sterilization needs.

[0003] In response to the above problems, the present invention proposes an integrated air sterilization and deodorization device and method based on solar energy drive, aiming to achieve efficient, energy-saving and environmentally friendly air purification through deep coupling of solar power supply and air treatment module. Summary of the invention

[0004] The purpose of the present invention is to provide an integrated air sterilization and deodorization device and method based on solar energy drive to solve the problems of high energy consumption, ozone pollution, single function and so on in the existing air purification technology. To achieve this purpose, the present invention adopts the following technical solutions:

[0005] An integrated air sterilization and deodorization device based on solar energy drive includes a solar power supply module and an air handling unit. The solar power supply module is composed of a photovoltaic panel, an energy storage unit, a controller and an inverter, and is responsible for providing clean and renewable energy for the entire device. The air handling unit is composed of an air inlet, a sterilization module, a deodorization module and an air outlet, and is responsible for achieving air purification.

[0006] Furthermore, the controller and inverter in the present invention together constitute an energy management module. The energy management module can intelligently switch the power supply mode according to the lighting conditions: when there is sufficient light, the air handling unit is powered first; when there is insufficient light or no light, it switches to the energy storage unit for power supply to ensure the all-weather operation of the device. In terms of the sterilization module, the present invention adopts UV-C LED lamps as sterilization light sources, and combines with nano-TiO2 photocatalytic coatings on the surface of porous aluminum substrates to achieve efficient sterilization and pollutant degradation. The preparation method of the nano-TiO2 photocatalytic coating includes forming a film of a mixed solution of tetrabutyl titanate and acetylacetone in a molar ratio of 1:0.3-0.5 by a sol-gel method, and calcining at 450°C for 2 hours and then rapidly cooling to room temperature to form a nanostructure with an rutile phase content ≥95%.

[0007] Furthermore, the UV-C LED lamp emits ultraviolet light with a wavelength of 265±2nm and a power density of 40-60mW / cm2.

[0008] Furthermore, the energy band matching relationship between the UV-C light source and the TiO2 photocatalytic coating satisfies Eg=3.2eV.

[0009] The deodorization module of the present invention uses a combination of honeycomb activated carbon and a deodorization catalyst. Honeycomb activated carbon has a high 2 / g specific surface area, which can efficiently adsorb odor molecules in the air. The deodorizing catalyst uses ε-MnO2 catalyst, which is loaded on the surface of honeycomb activated carbon by chemical vapor deposition to achieve efficient conversion of ozone and avoid secondary pollution.

[0010] In addition, the controller in the present invention also implements a series of intelligent control logic. When the TVOC concentration exceeds 0.5 mg / m 3 When the ozone concentration exceeds 0.05ppm, the UV-C light intensity will be automatically reduced by 20-30% and the fan speed will be increased by 15-25% to reduce ozone residue.

[0011] The photovoltaic panels adopt the BIPV component form, the transmittance can be adjusted within the range of 30-70%, and the surface is provided with a self-cleaning hydrophobic coating, which not only ensures the power generation efficiency of the photovoltaic panels but also reduces the maintenance cost.

[0012] Based on the above device, the present invention also provides an air treatment method, comprising: 2 When the air handling unit is running, the UV-C and photocatalytic synergistic sterilization mode is started, and the surface temperature of the photocatalyst is controlled at 45±2℃; the airflow residence time of the honeycomb catalyst layer is dynamically adjusted to 0.8-1.2 seconds according to the feedback from the ozone sensor to avoid the impact of ozone residue on the indoor environment.

[0013] Compared with the prior art, the beneficial effects of the present invention are mainly reflected in the following aspects:

[0014] Energy efficiency breakthrough: Through the energy band matching relationship between the 265nm UV-C light source and the TiO2 photocatalytic coating, the photocatalytic reaction rate is significantly improved, achieving efficient sterilization and pollutant degradation. At the same time, the solar power supply module is deeply coupled with the air treatment module to maximize the use of solar energy resources and reduce dependence on the power grid.

[0015] Space intensive: Photovoltaic panels are seamlessly integrated with the building curtain wall in the form of BIPV, which not only saves building space but also improves the aesthetics of the building. The air handling unit is compactly designed and suitable for densely built areas to meet space restrictions.

[0016] Safety upgrade: The honeycomb activated carbon matrix is ​​loaded with ε-MnO2 catalyst to efficiently convert ozone, eliminate secondary pollution, and ensure the safety of indoor air quality. The design that does not require additional humidification also simplifies the traditional ozone treatment process.

[0017] Intelligent linkage: The energy management module realizes two-way power supply from solar energy and building power grid. Excess power can be fed back to the grid to improve the energy self-sufficiency rate of the system. The intelligent control logic dynamically adjusts the UV-C light intensity, fan speed and porous aluminum substrate temperature according to TVOC and ozone concentration to achieve efficient and safe air treatment.

[0018] Economic and environmental benefits: Photovoltaic power supply accounts for up to 62%, which saves a lot of electricity bills and has significant economic benefits. Solar drive reduces carbon emissions, and photocatalytic technology avoids secondary pollution from chemical disinfectants, which is in line with the concept of green environmental protection.

[0019] Multifunctional integration: Sterilization and deodorization work together to effectively remove bacteria and organic pollutants while achieving multifunctional integration. The all-weather operation design ensures that the device can continue to operate at night or in the absence of light.

[0020] Widely used: Suitable for densely built areas such as hospitals, office buildings, shopping malls, etc., especially suitable for linkage with central air-conditioning systems to improve the overall air purification efficiency. The photovoltaic panel area and air handling unit scale can be adjusted according to demand to meet the application needs of different scenarios. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 : The energy management logic block diagram of the present invention shows the bidirectional power supply path of photovoltaic input, energy storage unit, and building power grid;

[0022] Figure 2 : Front view of the air handling unit of the present invention;

[0023] Figure 3 : A side cross-sectional view of the air handling unit of the present invention;

[0024] Figure numerals: 1 control cabinet, 2 air inlet, 3 fan, 4 side air duct, 5 sterilization lamp, 6 porous aluminum substrate, 7 air duct baffle, 8 honeycomb activated carbon, 9 catalyst, 10 touch screen, 11 air outlet, 12 cover plate. DETAILED DESCRIPTION

[0025] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0026] Figure 1 This is the energy management logic block diagram of the present invention, showing the bidirectional power supply path of photovoltaic input, energy storage unit, and building power grid.

[0027] 1. Solar power supply module

[0028] 1. Photovoltaic panels

[0029] The photovoltaic panels are in the form of BIPV components and are seamlessly integrated with the building curtain wall. The light transmittance is adjustable from 30-70% and can be automatically adjusted according to lighting conditions to maximize power generation efficiency. The surface of the photovoltaic panels is provided with a self-cleaning hydrophobic coating that can automatically repel dust and rainwater, reducing maintenance costs.

[0030] 2. Energy storage unit

[0031] The energy storage unit uses a high-performance lithium-ion battery pack that can store the electricity generated by the photovoltaic panels and provide power support for the air handling unit when there is insufficient or no sunlight. The energy storage unit has the characteristics of large capacity, long life, and high safety, ensuring the stable operation of the device around the clock.

[0032] 3. Controller and inverter

[0033] The controller is responsible for monitoring the output voltage and current of the photovoltaic panels, as well as the power status of the energy storage unit. Based on this information, the controller intelligently switches the power supply mode to ensure that the air handling unit is directly powered by the photovoltaic panels when there is sufficient sunlight, and powered by the energy storage unit when there is insufficient sunlight. The inverter converts the direct current generated by the photovoltaic panels into alternating current for use by the air handling unit.

[0034] 2. Air handling unit (such as Figure 2 , Figure 3 (shown)

[0035] 1. Air inlet and outlet

[0036] The air inlet 2 is located at the front end of the air handling unit and is responsible for inhaling the air to be purified. The air outlet 11 is located at the rear end of the unit and is responsible for discharging the purified air. Both the air inlet 2 and the air outlet 11 are designed with high-efficiency filters to prevent large particles from entering the unit.

[0037] 2. Sterilization module

[0038] The sterilization module consists of a UV-C LED lamp 5 and a porous aluminum substrate 6. The UV-C LED lamp emits ultraviolet light with a wavelength of 265±2nm, which can destroy the DNA structure of bacteria, thereby achieving efficient sterilization. The surface of the porous aluminum substrate 6 is coated with a nano-TiO2 photocatalytic coating 9, which can absorb the energy of UV-C light and produce free radicals with strong oxidizing properties, further degrading organic pollutants in the air. It should be noted that the energy band matching relationship between the 265nm UV-C light source and the TiO2 photocatalytic coating is Eg=3.2eV.

[0039] The preparation method of nano-TiO2 photocatalytic coating has an important influence on its catalytic efficiency. The present invention adopts an efficient sol-gel method to prepare nano-TiO2 coating. The specific steps include: mixing tetrabutyl titanate and acetylacetone in a molar ratio of 1:0.3-0.5, and forming a film through a sol-gel process. This process requires precise control of the mixing ratio and reaction conditions to ensure that the formed sol has appropriate viscosity and stability. Subsequently, the formed film is calcined at 450°C for 2 hours and then quickly cooled to room temperature to form a nanostructured TiO2 coating with anatase phase content of ≥95%. This calcination process helps to eliminate organic residues and improve the crystallinity and photocatalytic activity of the coating.

[0040] The energy of 265nm photons is 4.68eV, which is higher than the bandgap width of TiO2 of 3.2eV, taking into account the needs of sterilization and photocatalysis.

[0041] 3. Deodorization module

[0042] The deodorization module is mainly composed of honeycomb activated carbon 8 and deodorization catalyst 9. Honeycomb activated carbon has a high specific surface area (800-1200m 2 / g) and has excellent adsorption performance, which can effectively adsorb odor molecules in the air. The deodorizing catalyst uses ε-MnO2 catalyst, which is loaded on the honeycomb activated carbon by chemical vapor deposition. The ε-MnO2 catalyst can not only catalyze the decomposition of odor molecules adsorbed on the activated carbon, but also efficiently convert the ozone that may be produced, thereby avoiding secondary pollution.

[0043] 4. Energy management module

[0044] The energy management module consists of a controller and an inverter, which manages and distributes the electricity generated by the solar power module. The controller has intelligent control logic and can dynamically adjust the power distribution according to the light conditions and the needs of the air handling unit. When there is sufficient light, the controller will give priority to supplying power to the air handling unit; when there is insufficient light or no light, it will switch to the energy storage unit for power supply. The inverter is responsible for converting DC power into AC power required by the air handling unit.

[0045] In addition, the controller also executes a series of complex control logic to ensure the safe and efficient operation of the device. For example, when it detects that the indoor TVOC concentration exceeds 0.5mg / m 3 When the ozone concentration exceeds 0.05ppm, the controller will automatically reduce the UV-C light intensity by 20-30% and increase the fan speed by 15-25% to reduce the generation of ozone and accelerate its discharge.

[0046] 5. Photovoltaic panel design

[0047] Photovoltaic panels are in the form of building-integrated photovoltaic (BIPV) components. They not only generate electricity, but also serve as part of the building curtain wall, achieving a perfect combination of beauty and functionality. The light transmittance of photovoltaic panels is adjustable from 30-70%, which can be adjusted according to different seasons and weather conditions to optimize power generation efficiency and indoor lighting conditions. In addition, a self-cleaning hydrophobic coating is set on the surface of the photovoltaic panels, which can automatically remove dust and rainwater, reducing maintenance costs.

[0048] The operation process of the air handling unit of the present invention is as follows: air enters from the air inlet 2 and passes through the primary filter to remove large particle pollutants. The fan 3 drives the air to flow through the side air duct 4 and is evenly distributed to the sterilization lamp 5 and the porous aluminum substrate 6 area. The UV-C sterilization lamp 5 directly kills microorganisms, and the porous aluminum substrate 6 further degrades organic pollutants. The air absorbs odors through the honeycomb activated carbon 8, and the catalyst 9 converts ozone to ensure air quality safety. Clean air is discharged from the air outlet 11 to improve the indoor environment. The control cabinet 1 monitors the air quality in real time, displays data through the touch screen 10, and dynamically adjusts the operating parameters. The air duct baffle 7 of the present invention is located in the side air duct 4 of the air handling unit, and its main function is to guide the flow path of the airflow inside the unit. By rationally designing the shape and angle of the baffle, it is ensured that the air can pass through the sterilization module (UV-C LED lamp 5 and porous aluminum substrate 6) and the deodorization module (honeycomb activated carbon 8 and catalyst 9) evenly, thereby improving the purification efficiency.

[0049] Application Example 1: Hospital Corridor Application

[0050] 1. Device installation and configuration

[0051] The solar-powered integrated air sterilization and deodorization device of the present invention is installed on the ceiling or wall of the hospital corridor. The specific configuration of the device is as follows:

[0052] Photovoltaic panels: They are in the form of BIPV components, seamlessly integrated with the building curtain wall, and the transmittance is set to 50% to balance power generation efficiency and indoor lighting needs.

[0053] Energy storage unit: A 5kWh lithium-ion battery pack is configured to ensure that the device can continue to operate for at least 8 hours at night or in dark conditions.

[0054] Air handling unit: air volume is 300m 3 / h, high-efficiency filters are installed at the air inlet and outlet to prevent large particles from entering the unit.

[0055] 2. Operation parameter settings

[0056] Sterilization module: The power of UV-C LED lamp is 30W, the wavelength is set to 265±2nm, the surface of porous aluminum substrate is coated with nano-TiO2 photocatalytic coating, and the photocatalytic surface temperature is controlled at 45±2℃.

[0057] Deodorization module: Honeycomb activated carbon with a specific surface area of ​​1000m 2 / g, ε-MnO2 catalyst was loaded by chemical vapor deposition, and the gas flow residence time was set to 1.0 s.

[0058] Control logic: When TVOC concentration exceeds 0.5mg / m 3 When the UV-C light intensity is increased to 90%,

[0059] The porous aluminum substrate is heated to 45°C; when the ozone concentration exceeds 0.05ppm, the UV-C light intensity is reduced by 25% and the fan speed is increased by 20%.

[0060] 3. Performance Testing

[0061] In actual operation, the sterilization rate of the device for E. coli reached 99.98%, the TVOC removal rate was 91%, and the residual ozone was less than 0.01ppm. The test results show that the present invention has efficient and safe air purification capabilities in hospital corridor environments.

[0062] Application Example 2: Linkage with Central Air Conditioning

[0063] 1. Device installation and configuration

[0064] The present invention is linked with the central air conditioning system and installed in the air conditioning room or air duct of a large office building. The specific configuration is as follows:

[0065] Photovoltaic panels: BIPV components are used, with a light transmittance of 70% to maximize power generation efficiency. A self-cleaning hydrophobic coating is set on the surface of the photovoltaic panels to reduce maintenance requirements.

[0066] Energy storage unit: A 10kWh lithium-ion battery pack is configured to ensure that the device can continue to operate for at least 12 hours at night or in dark conditions.

[0067] Air handling unit: air volume is 1000m 3 / h, high-efficiency filters are installed at the air inlet and outlet to prevent large particles from entering the unit.

[0068] 2. Operation parameter settings

[0069] Sterilization module: The power of UV-C LED lamp is 100W, the wavelength is set to 265±2nm, the surface of porous aluminum substrate is coated with nano-TiO2 photocatalytic coating, and the photocatalytic surface temperature is controlled at 45±2℃.

[0070] Deodorization module: Honeycomb activated carbon with a specific surface area of ​​1200m 2 / g, ε-MnO2 catalyst was loaded by chemical vapor deposition, and the airflow residence time was set to 1.2 seconds.

[0071] Control logic: When TVOC concentration exceeds 0.5mg / m 3 When the ozone concentration exceeds 0.05ppm, the UV-C light intensity is reduced by 30% and the fan speed is increased by 25%.

[0072] 4. Performance Testing

[0073] In actual operation, the sterilization rate of the device for E. coli reached 99.99%, the TVOC removal rate was 93%, and the ozone residual was less than 0.01ppm. Photovoltaic power supply accounted for 62%, and the annual electricity bill savings were as high as 8,500 yuan / unit (the electricity price was calculated at 0.6 yuan / kWh). The test results show that the present invention has significant economic benefits and air purification effects in large office building environments.

[0074] Application Example 3: Shopping Mall Air Purification

[0075] 1. Device installation and configuration

[0076] The present invention is installed in the central air conditioning system of a shopping mall, and the specific configuration is as follows:

[0077] Photovoltaic panels: Using BIPV component form, the transmittance is set to 40% to balance the power generation efficiency and the shopping mall's lighting needs.

[0078] Energy storage unit: Equipped with a lithium-ion battery pack with a capacity of 8kWh, it ensures that the device can continue to operate for at least 10 hours at night or in dark conditions.

[0079] Air handling unit: air volume is 800m 3 / h, high-efficiency filters are installed at the air inlet and outlet to prevent large particles from entering the unit.

[0080] 2. Operation parameter settings

[0081] Sterilization module: The power of UV-C LED lamp is 60W, the wavelength is set to 265±2nm, the surface of porous aluminum substrate is coated with nano-TiO2 photocatalytic coating, and the photocatalytic surface temperature is controlled at 45±2℃.

[0082] Deodorization module: Honeycomb activated carbon with a specific surface area of ​​1100m 2 / g, ε-MnO2 catalyst was loaded by chemical vapor deposition, and the gas flow residence time was set to 1.1 seconds.

[0083] Control logic: When TVOC concentration exceeds 0.5mg / m 3 When the ozone concentration exceeds 0.05ppm, the UV-C light intensity decreases by 28% and the fan speed increases by 22%.

[0084] 3. Performance Testing

[0085] In actual operation, the sterilization rate of the device for E. coli reached 99.97%, the TVOC removal rate was 92%, and the residual ozone was less than 0.01ppm. The test results show that the present invention has efficient and safe air purification capabilities in shopping mall environments.

[0086] Application Example 4: Home Air Purification

[0087] 1. Device installation and configuration

[0088] The present invention is installed in a family living room or bedroom, and the specific configuration is as follows:

[0089] Photovoltaic panels: Using BIPV component form, the transmittance is set to 60% to balance power generation efficiency and indoor lighting needs.

[0090] Energy storage unit: A 3kWh lithium-ion battery pack is configured to ensure that the device can continue to operate for at least 6 hours at night or in dark conditions.

[0091] Air handling unit: air volume is 200m 3 / h, high-efficiency filters are installed at the air inlet and outlet to prevent large particles from entering the unit.

[0092] 2. Operation parameter settings

[0093] Sterilization module: The power of UV-C LED lamp is 20W, the wavelength is set to 265±2nm, the surface of porous aluminum substrate is coated with nano-TiO2 photocatalytic coating, and the photocatalytic surface temperature is controlled at 45±2℃.

[0094] Deodorization module: Honeycomb activated carbon with a specific surface area of ​​900m 2 / g, ε-MnO2 catalyst was loaded by chemical vapor deposition, and the gas flow residence time was set to 0.9 s.

[0095] Control logic: When TVOC concentration exceeds 0.5mg / m 3 When the UV-C light intensity is increased to 85%,

[0096] The porous aluminum substrate was heated to 42°C; when the ozone concentration exceeded 0.05ppm, the UV-C light intensity decreased by 20% and the fan speed increased by 15%.

[0097] 3. Performance Testing

[0098] In actual operation, the sterilization rate of the device for E. coli reached 99.96%, and the TVOC removal rate was

[0099] 90%, and the residual ozone is less than 0.01ppm. The test results show that the present invention has high efficiency and safe air purification ability in the home environment.

[0100] Application Example 5: School Classroom Air Purification

[0101] 1. Device installation and configuration

[0102] The present invention is installed on the ceiling or wall of a school classroom, and the specific configuration is as follows:

[0103] Photovoltaic panels: Using BIPV component form, the transmittance is set to 55% to balance power generation efficiency and classroom lighting needs.

[0104] Energy storage unit: A 4kWh lithium-ion battery pack is configured to ensure that the device can continue to operate for at least 7 hours at night or in dark conditions.

[0105] Air handling unit: air volume is 250m 3 / h, high-efficiency filters are installed at the air inlet and outlet to prevent large particles from entering the unit.

[0106] 2. Operation parameter settings

[0107] Sterilization module: The power of UV-C LED lamp is 25W, the wavelength is set to 265±2nm, the surface of porous aluminum substrate is coated with nano-TiO2 photocatalytic coating, and the photocatalytic surface temperature is controlled at 45±2℃.

[0108] Deodorization module: Honeycomb activated carbon with a specific surface area of ​​950m 2 / g, ε-MnO2 catalyst was loaded by chemical vapor deposition, and the gas flow residence time was set to 0.95 s.

[0109] Control logic: When TVOC concentration exceeds 0.5mg / m 3 When the ozone concentration exceeds 0.05ppm, the UV-C light intensity decreases by 22% and the fan speed increases by 18%.

[0110] 3. Performance Testing

[0111] In actual operation, the sterilization rate of the device for E. coli reached 99.97%, and the TVOC removal rate was

[0112] 91%, and the residual ozone content is less than 0.01ppm. The test results show that the present invention has efficient and safe air purification capabilities in school classroom environments.

[0113] Through the detailed description of the above specific implementation methods, those skilled in the art can adjust the configuration and operating parameters of the device according to the needs of the actual application scenario, smoothly implement the present invention, and achieve efficient, energy-saving, and environmentally friendly air purification effects. The present invention significantly improves the photocatalytic reaction rate by matching the quantum efficiency of UV-C with TiO2, and achieves efficient sterilization and pollutant degradation. At the same time, the deep coupling of the solar power supply module and the air treatment module maximizes the use of solar energy resources and reduces dependence on the power grid.

[0114] The BIPV integrated design allows the photovoltaic panels to be seamlessly integrated with the building curtain wall, which not only saves building space but also improves the building's aesthetics. The compact air handling unit design is suitable for various space-restricted environments, such as hospital corridors, offices, etc.

[0115] The dynamic ozone control system can monitor and adjust the ozone concentration in real time to ensure the safety of indoor air quality. In addition, the high efficiency of the ε-MnO2 catalyst avoids the complex design of additional humidification in traditional ozone treatment, improving the stability and reliability of the system.

[0116] The bidirectional power supply design and intelligent control logic enable the invention to dynamically adjust power distribution and operating parameters according to lighting conditions and indoor air quality, achieving efficient and safe air treatment. At the same time, excess power can be fed back to the building grid, improving energy self-sufficiency.

[0117] Photovoltaic power supply accounts for up to 62%, saving significant electricity bills annually. In addition, solar drive reduces carbon emissions, and photocatalytic technology avoids secondary pollution from chemical disinfectants, which is in line with the concept of green environmental protection.

[0118] The present invention integrates multiple functions such as sterilization and deodorization into one, realizing multi-functional integration. At the same time, the all-weather operation mode ensures that the device can continue to operate at night or in the absence of light, meeting the needs of various application scenarios.

[0119] The present invention is suitable for densely built areas such as hospitals, office buildings, shopping malls, etc., and is particularly suitable for linkage with central air-conditioning systems. At the same time, the photovoltaic panel area and the air handling unit scale can be adjusted according to demand to meet the application needs of different scenarios.

[0120] Note that the above are only preferred embodiments of the present invention and the technical principles used. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and that various obvious changes, readjustments and substitutions can be made by those skilled in the art without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in more detail through the above embodiments, the present invention is not limited to the above embodiments, and may include more other equivalent embodiments without departing from the concept of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

Claims

1. An integrated air sterilization and disinfection device driven by solar energy, characterized in that: include: A solar power supply module and an air handling unit; the solar power supply module is composed of a photovoltaic panel, an energy storage unit, a controller and an inverter; the air handling unit is composed of an air inlet, a sterilization module, a deodorization module and an air outlet.

2. The device according to claim 1, characterized in that The controller and the inverter together form an energy management module, which preferentially supplies power to the air handling unit when there is sufficient sunlight. When there is insufficient or no sunlight, the air handling unit is powered by the energy storage unit.

3. The device according to claim 1, characterized in that The sterilization module is used to remove bacteria in the air and is composed of a sterilization lamp and a porous aluminum substrate. The sterilization lamp adopts a UV-C LED lamp. A photocatalytic coating is attached to the surface of the porous aluminum substrate. The catalyst used in the photocatalytic coating is nano-TiO2.

4. The device according to claim 3, characterized in that The preparation method of the nano TiO2 photocatalytic coating comprises: forming a film by a sol-gel method using a mixture of tetrabutyl titanate and acetylacetone in a molar ratio of 1:0.3-0.5, calcining at 450° C. for 2 hours and then rapidly cooling to room temperature to form a nano structure with anatase phase content of ≥95%.

5. The device according to claim 1, characterized in that The deodorization module is composed of honeycomb activated carbon and deodorization catalyst. The specific surface area of ​​the honeycomb activated carbon is 800-1200m 2 / g, the deodorization catalyst is ε-MnO2 catalyst, which is loaded by chemical vapor deposition method.

6. The device according to claim 1, characterized in that The controller executes the following control logic: When TVOC concentration is greater than 0.5 mg / m 3 When the ozone concentration is greater than 0.05ppm, the UV-C light intensity is automatically reduced by 20-30% and the fan speed is increased by 15-25%.

7. The device according to claim 1, characterized in that The photovoltaic panel adopts the form of a BIPV component, the light transmittance can be adjusted within a range of 30-70%, and a self-cleaning hydrophobic coating is arranged on the surface.

8. An air treatment method, implemented based on any device of claims 1-7, characterized in that: include: When the solar irradiance is greater than 500W / m 2 When the air handling unit is running, the UV-C and photocatalytic synergistic sterilization mode is started to control the surface temperature of the photocatalyst at 45±2℃; the airflow residence time of the honeycomb catalyst layer is dynamically adjusted to 0.8-1.2 seconds according to the feedback from the ozone sensor to avoid the impact of ozone residue on the indoor environment.

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