CN209263173U - System coupling micro-electric field adsorption with microwave-enhanced photocatalytic air purification unit - Google Patents

Abstract

The invention relates to a system for coupling micro-electric field adsorption and microwave-enhanced photocatalytic air purification unit, which relates to an air conditioning system. The utility model solves the problem of low air purification quality in the current photocatalytic oxidation technology. The system of coupling micro-electric field adsorption and microwave-enhanced photocatalytic air purification unit includes air intake section, micro-electric field adsorption purification device, microwave-enhanced photocatalytic air purification device, micro-ozone generator, deep air purification device, preheating device, and air cooler device, steam spray humidification device, reheating device, blower device and shell. The utility model is used for a system of coupling micro-electric field adsorption and microwave enhanced photocatalysis air purification unit.

Description

System coupling micro-electric field adsorption with microwave-enhanced photocatalytic air purification unit

technical field

The utility model relates to an air conditioning system.

Background technique

With the substantial improvement of people's living standards, people have carried out a large number of interior decorations on living and office spaces. However, due to the release of formaldehyde, benzene, suspended particles, new and persistent Harmful gases such as organic pollutants, dust and increasingly serious smog pollution have aggravated the indoor air pollution and seriously damaged people's health. Therefore, improving the indoor air quality of buildings has gradually become the focus of attention. At present, centralized and decentralized air-conditioning equipment equipped with air purification units is a feasible method to control indoor pollutants and improve air cleanliness. Among many air purification technologies, the air purification technology based on photocatalytic oxidation technology has strong oxidative properties, can oxidize and decompose organic pollutants at normal temperature and pressure, and because of its low energy consumption and less secondary pollution, etc. Due to its technological advantages, it has gradually attracted attention, and it has become a very active research direction in new processes for refrigeration, air conditioning, and environmental protection and energy conservation. However, with the intensification of air pollution and smog, the types of particulate pollutants and organic pollutants in the air have become more complex. When the existing photocatalytic oxidation system is dealing with the increasingly complex air pollution conditions, there are often problems. The effective reaction rate is not high (at present, the indoor air is only 80% to 90% clean), the material used as the photocatalytic oxidation carrier has limited enrichment of organic pollutants, the catalyst is easily deactivated, and intermediate harmful by-products are easily produced The quality and efficiency of air purification are low; at the same time, the killing and inhibiting performance of conventional air purification units on the microbial flora in the air needs to be further improved, so as to further slow down the biological pollution on the surface of copper tubes and fins of subsequent air conditioners. The thickness of the film can achieve the purpose of improving the refrigeration efficiency of the air conditioner. Therefore, improving the photocatalytic oxidation efficiency of the air purification unit in the central air conditioner for various organic pollutants, the adsorption and oxidation efficiency of PM2. It is the key to protect people's physical and mental health, improve air-conditioning refrigeration efficiency, and reduce air-conditioning energy consumption.

Utility model content

The utility model aims to solve the problem of low air purification quality in the current photocatalytic oxidation technology, and provides a system coupling micro-electric field adsorption and microwave enhanced photocatalytic air purification unit.

A system coupling micro-electric field adsorption and microwave-enhanced photocatalytic air purification unit, which includes air intake section, micro-electric field adsorption purification device, microwave-enhanced photocatalytic air purification device, micro-ozone generator, deep air purification device, preheating device, air Cooler device, steam spray humidification device, reheating device, blower device and shell;

Along the direction of wind flow, the housing is sequentially equipped with an air intake section, a micro-electric field adsorption purification device, a microwave-enhanced photocatalytic air purification device, a preheating device, an air cooler device, a steam spray humidification device, a reheating device, a blower device, and a micro ozone The generating device and the deep air purification device; the air intake section is connected horizontally with the fresh air duct, the upper part of the air intake section is connected with the vertical return air duct, and the deep air purification device is connected horizontally with the air supply duct;

The micro-electric field adsorption and purification device includes a filter screen, a three-dimensional frame, a wire, an electrode plate and a honeycomb adsorption material; the metal wire includes a wind-in side wire and an air-out side wire; the electrode plate includes The positive electrode plate on the air inlet side and the negative electrode plate on the air outlet side; the filter screen is fixed on the three-dimensional frame, and the three-dimensional frame and the filter screen form a cavity, and the metal wires on the air inlet side and the air outlet side are respectively covered in the filter screen On the air inlet side and the air outlet side of the surface, the positive electrode plate on the air inlet side and the negative electrode plate on the air outlet side are respectively arranged on both sides of the three-dimensional frame, and the metal wire on the air inlet side is connected with the positive electrode plate on the air inlet side, and the metal wire on the air outlet side The wire is connected to the negative electrode plate on the air outlet side; the cavity surrounded by the three-dimensional frame and the filter net is filled with honeycomb adsorption material;

The microwave-enhanced photocatalytic air purification device includes an activated carbon fiber purification device in Zone I and a microwave-enhanced photocatalytic air purification device in Zone II, and the activated carbon fiber purification device in Zone I and microwave-enhanced photocatalytic air purification in Zone II are arranged in sequence along the wind flow direction device;

The activated carbon fiber purification device in the I zone is a layer of activated carbon fiber felt filter device, and the activated carbon fiber felt filter device is activated carbon fiber felt into a wave shape and fixed on the wave plate structure frame;

The thickness of the activated carbon fiber felt is 1cm～3cm;

The microwave-enhanced photocatalytic air purification device in the II zone comprises 2 layers of loaded _TiO coating activated carbon fiber felt filter, microwave generator and ultraviolet light source; the loaded _TiO coated activated carbon fiber felt filter is arranged side by side, The described activated carbon fiber felt filter device that is loaded with _TiO2 coating is that the activated carbon fiber felt that is loaded with _TiO2 is waved and fixed on the corrugated plate structure frame, and the microwave generator is arranged on the loaded _TiO2 coating Between the activated carbon fiber felt filter device and the preheating device, the ultraviolet light source is arranged between two layers of activated carbon fiber felt filter devices loaded with _TiO2 coating and is in the curved section;

The thickness of the activated carbon fiber felt loaded with _TiO2 coating is 1cm～3cm;

The deep air purification device is arranged side by side with two layers of activated carbon fiber felt filter devices.

Beneficial effects of the present utility model: 1. The system of coupling micro-electric field adsorption and microwave-enhanced photocatalytic air purification unit proposed by the present utility model oxidizes organic pollutants through photocatalytic oxidation, thereby reducing indoor organic pollutants, inhibiting bacteria, removing smelly purpose.

2. The metal wire on the air inlet side of the utility model is connected to the positive electrode plate on the air inlet side, and the metal wire on the air outlet side is connected to the negative electrode plate on the air outlet side, and a micro electric field is formed in the positive and negative electrodes through an external power supply;

Since most of the dust substances and organic pollutants in the air move irregularly and have negative polarity, the addition of a micro-electric field makes the negatively charged organic pollutants and dust move regularly to the positive electrode plate through the conduction of the metal wire, which is collected in The surface of activated carbon fiber felt loaded with _TiO2 coating; at the same time, because dust is usually the carrier of germs, the micro-current stimulation with additional micro-electric field will cause protein and nucleic acid to mutate, resulting in antibacterial and sterilizing effects. In addition, because the negative dust and organic pollutants move to the positive plate, the negative current of the negative plate is excessive, and the negative current is transmitted to the air during the movement, which can generate a small amount of negative oxygen ions and increase the freshness of the air.

3. The micro-electric field adsorption purification device, microwave enhanced photocatalytic air purification device and deep air purification device in this utility model adopt the wave plate type. Compared with the flat plate type and folded plate type, the wave plate type effectively increases the activated carbon fiber and photocatalytic The contact area of the oxidation part improves the efficiency of adsorption and catalytic oxidation, and reduces the purification time of the air conditioning system. The ultraviolet light source is set between two layers of activated carbon fiber felts loaded with _TiO2 coating and in the curved section, so that the ultraviolet light source is irradiated to each part of the activated carbon fiber felts loaded with _TiO2 coating, so that each adsorption and photocatalysis The oxidation site reacts at the same time, speeding up the reaction rate and reducing the reaction time.

The deep air purification device described in the utility model is set in accordance with the activated carbon fiber purification device in zone I to prevent other harmful pollutants and fungal substances from being mixed into other sections after the microwave enhanced photocatalytic air purification device, so further adsorption and filtration is required. Realize that the content of indoor pollutants is almost zero. At the same time, if the micro-ozone generator section generates excessive ozone, a part of the negative oxygen ions can be consumed by the deep air purification device to prevent excessive negative oxygen ions from entering the room.

4. The system of coupling micro-electric field adsorption and microwave-enhanced photocatalytic air purification unit proposed by this utility model catalyzes and oxidizes the bacteria on the activated carbon fiber felt loaded with _TiO2 coating through photocatalytic oxidation, and at the same time inhibits the surface cooler due to The increase in the thickness of the bacterial film produced in the dehumidification process reduces the surface roughness of the surface cooler, enhances the heat transfer coefficient of the surface cooler, and improves the refrigeration and purification efficiency of the air conditioner.

5. The utility model provides a system for coupling micro-electric field adsorption and microwave-enhanced photocatalytic air purification unit, adopts activated carbon fiber felt loaded with _TiO2 coating, avoids the problem of catalyst falling off during use, and enhances the activity of the catalyst; The utility model can effectively remove harmful by-products produced in the process through the microwave thermal effect and sterilization effect. Therefore, the utility model effectively solves the problem that the catalyst is easily deactivated and produces harmful by-products, and enhances the quality and efficiency of air purification.

6. The effect of the microwave sent by the microwave generator described in the utility model mainly has the following two points:

①. Microwave heating can be used to heat the air. In winter, the preheating device and reheating device can be canceled to reduce energy consumption.

② Microwave can induce TiO ₂ photocatalyst to produce strong hydroxyl radical OH, so it can degrade indoor organic pollutants into inorganic small molecules such as carbon dioxide and water, so that indoor air can be purified.

7. The utility model uses a microwave generator and an ultraviolet light source to emit microwaves and ultraviolet light to stimulate the photocatalytic oxidation process, so as to realize the adsorption and catalytic oxidation process of organic pollutants.

_TiO2 in the _TiO2 coating described in the utility model is a kind of superior performance, stable and non-toxic semiconductor photocatalyst, under the irradiation of microwave generator and ultraviolet light source, the surface excitation produces electron-hole pair, electron-hole Oxygen radicals and hydroxyl radicals with high oxidation activity are formed under the action of electron-hole pairs, which can efficiently oxidize the adsorbed substances on the surface, thereby degrading volatile organic molecules into small inorganic molecules such as carbon dioxide and water.

The function of the microwave generator and the ultraviolet light source described in the utility model is to excite the redox reaction in the photocatalytic oxidation process. The microwave generator and the ultraviolet light source can destroy the protease of the bacterial flora in the air at the same time, and fully inhibit and sterilize the bacteria. The microwave radiation of the microwave generator can not only promote the catalytic oxidation, but also heat the air. Therefore, in winter, the microwave generator can replace the preheating device and reheating device in the air conditioning system, and the microwave generator heats the air to increase its temperature to meet the indoor temperature requirements. Compared with ordinary air-conditioning system devices, it can reduce energy consumption and save resources.

Description of drawings

Fig. 1 is the structural representation of the system of the utility model coupling micro-electric field adsorption and microwave enhanced photocatalytic air purification unit;

Fig. 2 is the structural representation of the utility model micro-electric field adsorption purification device;

Fig. 3 is the left view of the utility model micro-electric field adsorption purification device;

Fig. 4 is the right side view of the micro-electric field adsorption purification device of the present invention;

Fig. 5 is the structure schematic diagram of the activated carbon fiber felt filter device loaded with _TiO2 coating of the utility model.

Detailed ways

Specific embodiment 1: This embodiment is specifically described in conjunction with FIGS. 1 to 5. This embodiment is a system for coupling micro-electric field adsorption and microwave-enhanced photocatalytic air purification unit, which includes an air intake section 13, a micro-electric field adsorption purification device 1, and a microwave-enhanced Photocatalytic air purification device 2, micro ozone generator 3, deep air purification device 4, preheating device 5, air cooler device 6, steam spray humidification device 7, reheating device 8, blower device 9 and housing 10;

Along the wind flow direction, the housing 10 is sequentially provided with an air intake section 13, a micro-electric field adsorption purification device 1, a microwave-enhanced photocatalytic air purification device 2, a preheating device 5, an air cooler device 6, a steam spray humidification device 7, and then Heater 8, blower device 9, micro-ozone generating device 3 and deep air purification device 4; the horizontal direction of the air intake section 13 is connected with the fresh air duct 11, and the top of the air intake section 13 is connected with the vertically arranged return air duct 12, and the depth The air purification device 4 is in communication with the air supply duct 14 in the horizontal direction;

The micro-electric field adsorption and purification device 1 includes a filter screen 1-1, a three-dimensional frame 1-2, a wire, an electrode plate and a honeycomb adsorption material 1-5; the wire includes a wind-in side wire 1-3 -1 and the metal wire 1-3-2 on the air outlet side; the electrode plate includes the positive electrode plate 1-4-1 on the air inlet side and the negative electrode plate 1-4-2 on the air outlet side; the filter screen 1-1 is fixed On the three-dimensional frame 1-2, and the three-dimensional frame 1-2 and the filter screen 1-1 form a cavity, and the metal wire 1-3-1 on the air inlet side and the metal wire 1-3-2 on the air outlet side cover the filter respectively The air inlet side and the air outlet side of the inner surface of the mesh 1-1, the positive electrode plate 1-4-1 on the air inlet side and the negative electrode plate 1-4-2 on the air outlet side are respectively arranged on both sides of the three-dimensional frame 1-2, and The metal wire 1-3-1 on the air inlet side is connected to the positive electrode plate 1-4-1 on the air inlet side, and the metal wire 1-3-2 on the air outlet side is connected to the negative electrode plate 1-4-2 on the air outlet side; the three-dimensional frame 1-2 and the cavity surrounded by the filter screen 1-1 are filled with honeycomb adsorption material 1-5;

The microwave-enhanced photocatalytic air purification device 2 includes an activated carbon fiber purification device in District I and a microwave-enhanced photocatalytic air purification device in District II, and the activated carbon fiber purification device in District I and microwave-enhanced photocatalytic air purification device in District II are arranged in sequence along the wind flow direction. Purification device;

The activated carbon fiber purification device in the I zone is a layer of activated carbon fiber felt filter device 2-1, and the activated carbon fiber felt filter device 2-1 is a wave-shaped activated carbon fiber felt and is fixed on the wave plate structure frame;

The thickness of the activated carbon fiber felt is 1cm～3cm;

The microwave-enhanced photocatalytic air purification device in the II zone comprises 2 layers of _TiO coated activated carbon fiber felt filter device 2-2, microwave generator 2-3 and ultraviolet light source 2-4; loaded with _TiO coated The activated carbon fiber felt filter device 2-2 is arranged side by side, and the described activated carbon fiber felt filter device 2-2 loaded with _TiO2 coating is loaded with _TiO2 Coated activated carbon fiber felt becomes wave-shaped and fixed on the wave plate type On the structural frame, the microwave generator 2-3 is arranged between the activated carbon fiber felt filter device 2-2 loaded with _TiO2 coating and the preheating device 5, and the ultraviolet light source 2-4 is arranged on two layers loaded with _TiO2 coating between the active carbon fiber felt filter device 2-2 and in the curved section;

The thickness of the activated carbon fiber felt loaded with _TiO2 coating is 1cm～3cm;

The deep air purification device 4 is arranged side by side with two layers of activated carbon fiber felt filter devices 2-1.

In this specific embodiment, the fresh air duct 11 is introduced from the outside and horizontally connected to the microwave-enhanced photocatalytic oxidation air-conditioning system, and the return air duct 12 is introduced from the indoor and vertically connected to the upper end of the microwave-enhanced photocatalytic oxidation air-conditioning system.

In this specific embodiment, the activated carbon fiber felt is an ordinary activated carbon fiber, which is used to absorb dust and organic pollutants of 1 μm to 10 μm, so that the harmful pollutants in the fresh air and return air are pre-treated in the activated carbon fiber purification device in zone I.

In this specific embodiment, the microwave generator 2-3 and the ultraviolet light source 2-4 are arranged in the microwave-enhanced photocatalytic air purification device in II district at the same time, and in winter/summer, the microwave and the ultraviolet light source 2-4 are provided by the microwave generator 2-3 4. Emit ultraviolet light to stimulate the photocatalytic oxidation reaction; in winter, microwaves can also heat the air at the same time, so the preheating device 5 and the reheating device 8 can be canceled to reduce energy consumption.

Advantages of this specific embodiment: the system of coupling micro-electric field adsorption and microwave enhanced photocatalytic air purification unit proposed by this specific embodiment can oxidize organic pollutants through photocatalytic oxidation, so as to reduce indoor organic pollutants, inhibit bacteria and deodorize the goal of.

2. In this specific embodiment, the metal wire 1-3-1 on the air inlet side is connected to the positive electrode plate 1-4-1 on the air inlet side, and the metal wire 1-3-2 on the air outlet side is connected to the negative electrode plate 1-4 on the air outlet side. -2 connected to form a micro electric field in the positive and negative electrodes through an external power supply;

Since most of the dust substances and organic pollutants in the air move irregularly and have negative polarity, the addition of a micro-electric field makes the negatively charged organic pollutants and dust move regularly to the positive electrode plate through the conduction of the metal wire, which is collected in The surface of activated carbon fiber felt loaded with _TiO2 coating; at the same time, because dust is usually the carrier of germs, the micro-current stimulation with additional micro-electric field will cause protein and nucleic acid to mutate, resulting in antibacterial and sterilizing effects. In addition, because the negative dust and organic pollutants move to the positive plate, the negative current of the negative plate is excessive, and the negative current is transmitted to the air during the movement, which can generate a small amount of negative oxygen ions and increase the freshness of the air.

3. In this specific embodiment, the micro-electric field adsorption purification device 1, the microwave-enhanced photocatalytic air purification device 2 and the deep air purification device 4 use the wave plate type. Compared with the flat plate type and the folded plate type, the wave plate type effectively increases activated carbon. The contact area between the fiber and the photocatalytic oxidation part improves the adsorption and catalytic oxidation efficiency and reduces the purification time of the air conditioning system. Ultraviolet light source 2-4 is arranged on 2 layers and is loaded with TiO ₂ Between the active carbon fiber felt filter device 2-2 of coating and is in curved section, makes ultraviolet light source irradiate to be loaded with _TiO Each part of the active carbon fiber felt of coating, Make each adsorption and photocatalytic oxidation site react at the same time, speed up the reaction rate and reduce the reaction time.

The deep air purification device 4 described in this specific embodiment is set consistent with the activated carbon fiber purification device 2-1 in the I district, preventing other sections from being mixed with other harmful pollutants and fungal substances after the microwave-enhanced photocatalytic air purification device 2, so Further adsorption and filtration is required to achieve almost zero indoor pollutant content. At the same time, if the micro-ozone generator section generates excessive ozone, a part of the negative oxygen ions can be consumed by the deep air purification device to prevent excessive negative oxygen ions from entering the room.

4. The system of coupling micro-electric field adsorption and microwave-enhanced photocatalytic air purification unit proposed in this specific embodiment can catalyze and oxidize the bacteria on the activated carbon fiber felt loaded with _TiO2 coating through photocatalytic oxidation, and at the same time inhibit the surface cooler Due to the increase in the thickness of the bacterial film produced in the dehumidification process, the surface roughness of the surface cooler is reduced, the heat transfer coefficient of the surface cooler is enhanced, and the refrigeration and purification efficiency of the air conditioner is improved.

5. This specific embodiment provides a system for coupling micro-electric field adsorption and microwave-enhanced photocatalytic air purification unit, using activated carbon fiber felt loaded with _TiO2 coating to avoid the problem of catalyst falling off during use and enhance the activity of the catalyst; In this specific embodiment, the harmful by-products generated in the process are effectively removed through the microwave effect through the microwave heat effect and the sterilization effect. Therefore, this specific embodiment effectively solves the problem that the catalyst is easily deactivated and produces harmful by-products, and enhances the quality and efficiency of air purification.

6. The effects of the microwaves emitted by the microwave generator described in this specific embodiment mainly include the following two points:

①. Microwave heating can be used to heat the air, and the preheating device 5 and reheating device 8 can be canceled in winter to reduce energy consumption.

② Microwave can induce TiO ₂ photocatalyst to produce strong hydroxyl radical OH, so it can degrade indoor organic pollutants into inorganic small molecules such as carbon dioxide and water, so that indoor air can be purified.

7. In this specific embodiment, the microwave generator 2-3 and the ultraviolet light source 2-4 emit microwaves and ultraviolet light to stimulate the photocatalytic oxidation process, so as to realize the adsorption and catalytic oxidation process of organic pollutants.

In the _TiO2 coating described in this specific embodiment, _TiO2 is a kind of superior performance, stable and non-toxic semiconductor photocatalyst, under the irradiation of microwave generator 2-3 and ultraviolet light source 2-4, surface excitation produces electron-air Hole pairs, electron-hole pairs form oxygen radicals and hydroxyl radicals with high oxidation activity under the action of electron-hole pairs, which can efficiently oxidize the adsorbed substances on the surface, thereby degrading volatile organic molecules into carbon dioxide and water and other inorganic small molecules.

The function of the microwave generator 2-3 and the ultraviolet light source 2-4 described in this specific embodiment is to excite the redox reaction in the photocatalytic oxidation process. The microwave generator 2-3 and the ultraviolet light source 2-4 can destroy the protease of the bacterial flora in the air at the same time, and fully inhibit and sterilize bacteria. The microwave radiation of the microwave generator 2-3 can also heat the air while promoting the catalytic oxidation. Therefore, in winter, the microwave generator 2-3 can replace the preheating device 5 and the reheating device 8 in the air-conditioning system device, and the air is heated by the microwave generator 2-3 to increase its temperature and reach the indoor temperature requirement. Compared with ordinary air-conditioning system devices, it can reduce energy consumption and save resources.

Embodiment 2: The difference between this embodiment and Embodiment 1 is that the filter 1-1 is flat or corrugated. Others are the same as in the first embodiment.

Embodiment 3: The difference between this embodiment and Embodiment 1 or 2 is that: the micro-ozone generator 3 is provided with a micro-ozone generator 3-1. Others are the same as in the first or second embodiment.

In this specific embodiment, a micro-ozone generator is used to generate ozone to increase air freshness.

Embodiment 4: This embodiment differs from Embodiments 1 to 3 in that: the preheating device 5 is provided with a gas guide plate. Others are the same as in the first embodiment.

The preheating device 5 described in this specific embodiment is provided with a gas guide plate, so that the heated gas enters the subsequent device evenly and regularly.

Embodiment 5: The difference between this embodiment and Embodiments 1 to 4 is that the micro-electric field adsorption purification device 1, the microwave-enhanced photocatalytic air purification device 2 and the preheating device 5 are obliquely arranged on the housing 10 internal. Others are the same as the specific embodiments 1 to 4.

The micro-electric field adsorption and purification device 1, the microwave-enhanced photocatalytic air purification device 2 and the preheating device 5 described in this specific embodiment are obliquely arranged inside the housing 10, so that the air passing through the mixing section is fully in contact with the adsorption material, increasing the Its contact area speeds up the adsorption rate and reduces the air conditioning purification time.

Embodiment one:

1 to 5, the system coupling micro-electric field adsorption and microwave-enhanced photocatalytic air purification unit includes air intake section 13, micro-electric field adsorption purification device 1, microwave-enhanced photocatalytic air purification device 2, micro-ozone generator 3, Deep air purification device 4, preheating device 5, air cooler device 6, steam spray humidification device 7, reheating device 8, blower device 9 and housing 10;

Along the wind flow direction, the housing 10 is sequentially provided with an air intake section 13, a micro-electric field adsorption purification device 1, a microwave-enhanced photocatalytic air purification device 2, a preheating device 5, an air cooler device 6, a steam spray humidification device 7, and then Heater 8, blower device 9, micro-ozone generating device 3 and deep air purification device 4; the horizontal direction of the air intake section 13 is connected with the fresh air duct 11, and the top of the air intake section 13 is connected with the vertically arranged return air duct 12, and the depth The air purification device 4 is in communication with the air supply duct 14 in the horizontal direction;

The micro-electric field adsorption and purification device 1 includes a filter screen 1-1, a three-dimensional frame 1-2, a wire, an electrode plate and a honeycomb adsorption material 1-5; the wire includes a wind-in side wire 1-3 -1 and the metal wire 1-3-2 on the air outlet side; the electrode plate includes the positive electrode plate 1-4-1 on the air inlet side and the negative electrode plate 1-4-2 on the air outlet side; the filter screen 1-1 is fixed On the three-dimensional frame 1-2, and the three-dimensional frame 1-2 and the filter screen 1-1 form a cavity, and the metal wire 1-3-1 on the air inlet side and the metal wire 1-3-2 on the air outlet side cover the filter respectively The air inlet side and the air outlet side of the inner surface of the mesh 1-1, the positive electrode plate 1-4-1 on the air inlet side and the negative electrode plate 1-4-2 on the air outlet side are respectively arranged on both sides of the three-dimensional frame 1-2, and The metal wire 1-3-1 on the air inlet side is connected to the positive electrode plate 1-4-1 on the air inlet side, and the metal wire 1-3-2 on the air outlet side is connected to the negative electrode plate 1-4-2 on the air outlet side; the three-dimensional frame 1-2 and filter net 1-1 fill the cavity surrounded by honeycomb adsorbent material 1-5, the specific surface area of the honeycomb adsorbent material 1-5 is >1200m ² /g, and the micropore volume of pore diameter <2nm >0.65cm ³ /g, the volume of mesopores with a pore diameter of 2nm to 50nm >0.25cm ³ /g;

The microwave-enhanced photocatalytic air purification device 2 includes an activated carbon fiber purification device in District I and a microwave-enhanced photocatalytic air purification device in District II, and the activated carbon fiber purification device in District I and microwave-enhanced photocatalytic air purification device in District II are arranged in sequence along the wind flow direction. Purification device;

The activated carbon fiber purification device in the I zone is a layer of activated carbon fiber felt filter device 2-1, and the activated carbon fiber felt filter device 2-1 is a wave-shaped activated carbon fiber felt and is fixed on the wave plate structure frame;

The thickness of described activated carbon fiber felt is 3cm; Described activated carbon fiber felt is the conventional activated carbon fiber felt produced by Jiangsu Kejing Carbon Fiber Company;

The microwave-enhanced photocatalytic air purification device in the II zone comprises 2 layers of _TiO coated activated carbon fiber felt filter device 2-2, microwave generator 2-3 and ultraviolet light source 2-4; loaded with _TiO coated The activated carbon fiber felt filter device 2-2 is arranged side by side, and the described activated carbon fiber felt filter device 2-2 loaded with _TiO2 coating is loaded with _TiO2 Coated activated carbon fiber felt becomes wave-shaped and fixed on the wave plate type On the structural frame, the microwave generator 2-3 is arranged between the activated carbon fiber felt filter device 2-2 loaded with _TiO2 coating and the preheating device 5, and the ultraviolet light source 2-4 is arranged on two layers loaded with _TiO2 coating between the active carbon fiber felt filter device 2-2 and in the curved section;

Described load has _TiO The thickness of the activated carbon fiber felt of coating is 3cm;

The described activated carbon fiber felt loaded with _TiO2 coating is specifically prepared according to the following steps: nano-scale silver powder, nano-scale copper powder, nano-scale manganese trioxide, nano-scale ferric oxide, nano-scale carbon black, Nano-scale titanium dioxide and viscose-based precursor materials were fully mixed to obtain a mixture. The mixture was placed in a tube furnace, and the mixture was pre-oxidized for 25 minutes at a temperature of 300 °C and a mixed atmosphere, and then in a nitrogen atmosphere and a temperature of Under the condition of 800°C, carbonize for 60 minutes to obtain the activated material, then use sodium chloride water vapor as the activator, 1g of the activated material is passed into the activator at a rate of 0.85mL/h, and the temperature is 850°C for activation 180min, and finally raise the activation temperature from 850°C to 950°C, use pure water vapor as the activator, and continue to activate for 20min at a temperature of 950°C to obtain activated carbon fibers, press the activated carbon fibers into waves, and then pass Sol-gel method loads TiO ₂ coating, obtains the activated carbon fiber felt that is loaded with TiO ₂ coating; Described TiO ₂ The mass ratio of coating and activated carbon fiber felt is 0.04:1; The specific surface area of described activated carbon fiber 1500m ² /g, the micropore volume of pore diameter<2nm is 0.905cm ³ /g, the mesopore volume of 2nm-50nm pore volume is 0.225cm ³ /g, and the total pore volume is 1.13cm ³ /g;

Described mixed atmosphere is the mixed gas of CO ₂ and nitrogen, and the mass percent of _CO in the described mixed atmosphere is 60%; The mass percent of sodium chloride in the described sodium chloride steam is 1.5%;

The mass ratio of the viscose-based precursor material to nano-scale silver powder is 1:0.02; the mass ratio of the viscose-based precursor material to nano-scale copper powder is 1:0.015; the viscose-based precursor The mass ratio of body material and nano-level manganese trioxide is 1:0.03; the mass ratio of the viscose-based precursor material and nano-level ferric oxide is 1:0.035; the viscose-based precursor material The mass ratio to nano-scale carbon black is 1:0.015; the mass ratio of the viscose-based precursor material to nano-scale titanium dioxide is 1:0.04;

The deep air purification device 4 is arranged side by side with two layers of activated carbon fiber felt filter devices 2-1.

The honeycomb adsorption material 1-5 is obtained after pretreatment of the filter material; the filter material is a mixture of activated carbon, zeolite and bamboo charcoal particles; the particle size of the filter material is 6 mesh.

The filter material pretreatment is carried out according to the following steps: soak the filter material in hydrochloric acid with a mass percentage of 3%, rinse after soaking for 2 hours, then soak the filter material soaked in hydrochloric acid in water, boil for 20min, Finally, drying is carried out.

The filter screen 1-1 is flat.

The external power supply voltage of the electrode plate is 12V.

Described micro-ozone generator 3 is provided with micro-ozone generator 3-1.

A gas guide plate is arranged inside the preheating device 5 .

The micro-electric field adsorption purification device 1 , the microwave-enhanced photocatalytic air purification device 2 and the preheating device 5 are obliquely arranged inside the housing 10 .

The viscose-based precursor material is viscose-based carbon fiber.

The housing 10 is in the shape of a cuboid and placed horizontally. The fresh air duct 11 is introduced from the outside and horizontally connected to the microwave-enhanced photocatalytic oxidation air-conditioning system, and the return air duct 12 is introduced from the room and vertically connected to the upper end of the microwave-enhanced photocatalytic oxidation air-conditioning system;

The air intake section 13 is a mixing section for the fresh air and the return air, which fully mixes the fresh air and the return air.

During use, firstly start the environment temperature and humidity setting system to be tested, and turn on the monitor showing the indoor air quality, turn on the microwave generator 2-3 and the ultraviolet light source 2-4.

The system of coupling micro-electric field adsorption and microwave-enhanced photocatalytic air purification unit proposed in this embodiment can oxidize organic pollutants through photocatalytic oxidation, so as to achieve the purpose of reducing indoor organic pollutants, inhibiting bacteria and deodorizing.

In this embodiment, the metal wire 1-3-1 on the air inlet side is connected to the positive electrode plate 1-4-1 on the air inlet side, and the metal wire 1-3-2 on the air outlet side is connected to the negative electrode plate 1-4-2 on the air outlet side. , forming a micro electric field in the positive and negative electrodes through an external power supply;

Since most of the dust substances and organic pollutants in the air move irregularly and have negative polarity, the addition of a micro-electric field makes the negatively charged organic pollutants and dust move regularly to the positive electrode plate through the conduction of the metal wire, which is collected in The surface of activated carbon fiber felt loaded with _TiO2 coating; at the same time, because dust is usually the carrier of germs, the micro-current stimulation with additional micro-electric field will cause protein and nucleic acid to mutate, resulting in antibacterial and sterilizing effects. In addition, because the negative dust and organic pollutants move to the positive plate, the negative current of the negative plate is excessive, and the negative current is transmitted to the air during the movement, which can generate a small amount of negative oxygen ions and increase the freshness of the air.

In this embodiment, the micro-electric field adsorption purification device 1, the microwave-enhanced photocatalytic air purification device 2 and the deep air purification device 4 use the wave plate type. Compared with the flat plate type and the folded plate type, the wave plate type effectively increases the amount of activated carbon fiber and light. The contact area of the catalytic oxidation part improves the adsorption and catalytic oxidation efficiency and reduces the purification time of the air conditioning system. Ultraviolet light source 2-4 is arranged on 2 layers and is loaded with TiO ₂ Between the active carbon fiber felt filter device 2-2 of coating and is in curved section, makes ultraviolet light source irradiate to be loaded with _TiO Each part of the active carbon fiber felt of coating, Make each adsorption and photocatalytic oxidation site react at the same time, speed up the reaction rate and reduce the reaction time.

The deep air purification device 4 described in the present embodiment is set consistent with the activated carbon fiber purification device 2-1 in the I district, preventing other sections from being mixed with other harmful pollutants and fungal substances after the microwave enhanced photocatalytic air purification device 2, so it is necessary to Further adsorption and filtration, the indoor pollutant content is almost zero. At the same time, if the micro-ozone generator section generates excessive ozone, a part of the negative oxygen ions can be consumed by the deep air purification device to prevent excessive negative oxygen ions from entering the room.

The system of coupling micro-electric field adsorption and microwave-enhanced photocatalytic air purification unit proposed in this example can catalyze and oxidize the bacteria on the activated carbon fiber felt loaded with _TiO2 coating through photocatalytic oxidation, and at the same time inhibit the dehumidification process of the surface cooler The increase in the thickness of the bacterial film produced in the air conditioner reduces the surface roughness of the surface cooler, enhances the heat transfer coefficient of the surface cooler, and improves the refrigeration and purification efficiency of the air conditioner.

This embodiment provides a system for coupling micro-electric field adsorption and microwave-enhanced photocatalytic air purification unit, using activated carbon fiber felt loaded with _TiO2 coating to avoid the problem of catalyst falling off during use and enhance the activity of the catalyst; this embodiment And through the microwave thermal effect and sterilization, the harmful by-products produced in the process can be effectively removed through the microwave effect. Therefore, this embodiment effectively solves the problem that the catalyst is easily deactivated and produces harmful by-products, and enhances the quality and efficiency of air purification.

The effect of the microwave that microwave generator described in the present embodiment sends mainly has following two points:

①. Microwave heating can be used to heat the air, and the preheating device 5 and reheating device 8 can be canceled in winter to reduce energy consumption.

② Microwave can induce TiO ₂ photocatalyst to produce strong hydroxyl radical OH, so it can degrade indoor organic pollutants into inorganic small molecules such as carbon dioxide and water, so that indoor air can be purified.

In this embodiment, the microwave generator 2-3 and the ultraviolet light source 2-4 emit microwaves and ultraviolet light to stimulate the photocatalytic oxidation process to realize the adsorption and catalytic oxidation process of organic pollutants.

In the _TiO2 coating described in this embodiment, _TiO2 is a kind of superior performance, stable and non-toxic semiconductor photocatalyst, under the irradiation of microwave generator 2-3 and ultraviolet light source 2-4, surface excitation produces electron-hole Yes, electron-hole pairs form oxygen radicals and hydroxyl radicals with high oxidation activity under the action of electron-hole pairs, which can efficiently oxidize the adsorbed substances on the surface, thereby degrading volatile organic molecules into carbon dioxide and water, etc. Inorganic small molecule substances.

The function of the microwave generator 2-3 and the ultraviolet light source 2-4 described in this embodiment is to excite the redox reaction in the photocatalytic oxidation process. The microwave generator 2-3 and the ultraviolet light source 2-4 can destroy the protease of the bacterial flora in the air at the same time, and fully inhibit and sterilize bacteria. The microwave radiation of the microwave generator 2-3 can also heat the air while promoting the catalytic oxidation. Therefore, in winter, the microwave generator 2-3 can replace the preheating device 5 and the reheating device 8 in the air-conditioning system device, and the air is heated by the microwave generator 2-3 to increase its temperature and reach the indoor temperature requirement. Compared with ordinary air-conditioning system devices, it can reduce energy consumption and save resources.

The activated carbon fiber felt loaded with _TiO2 coating described in this example is directional tailored through a special preparation method, which improves the adsorption efficiency of organic pollutants in the air to be treated and promotes photocatalytic oxidation. The effect of compounding of carbon precursors on the pore size distribution characteristics and main performance indicators of activated carbon fiber felt loaded with TiO ₂ coating was investigated. Various types of carbon precursors were selected for compounding. Through the optimization of the preparation process, the pore structure distribution and main performance indicators of the activated carbon fiber are regulated in situ. At the same time, some metal substances are added to improve the antibacterial and deodorizing effect of the activated carbon fiber felt loaded with _TiO2 coating, so as to prepare the activated carbon fiber felt loaded with _TiO2 coating that can be used to adsorb specific harmful pollutants in air-conditioning purification devices, To meet the requirements of indoor air cleanliness, this embodiment selects the viscose-based precursor material rich in oxygen-containing active groups as the carbon precursor material, thereby preparing a material containing a variety of metal oxides, and has synchronous development of mesopores and micropores. Characteristics of activated carbon fiber mats loaded with _TiO2 coating.

In this embodiment, the main purpose of loading nano-scale silver powder in the viscose-based precursor material is to make the activated carbon fiber mat loaded with _TiO2 coating have antibacterial and antibacterial functions. Into the bacteria body, interact with the protein in the bacteria body, block the metabolism to achieve the purpose of antibacterial and antibacterial. The main purpose of loading nanoscale copper powder in the viscose-based precursor material is to make the activated carbon fiber mat loaded with _TiO2 coating have a deodorizing function, and the ability to remove hydrogen sulfide is greatly increased. The main purpose of loading nano-scale manganese trioxide and nano-scale iron tetroxide in the viscose-based precursor material is to load transition nano-metal manganese in the activated carbon fiber mat loaded with _TiO2 coating, transition nano-metal manganese It shows great advantages in the catalytic reduction reaction, which improves the conversion rate of indoor harmful substances, and plays a catalytic role in the deep activation process of the activator and the pore expansion process. The addition of nano-scale iron tetroxide materials, It will also make the activated carbon fiber felt loaded with _TiO2 coating micro-magnetic, and the form of micro-magnetic field can promote the migration of pollutants to the surface of the adsorbent.

In this example, the main purpose of loading nano-scale carbon black and _TiO2 in the viscose-based precursor material is to increase the proportion of mesopores in the activated carbon fiber mat loaded with _TiO2 coating, so that the activated carbon fiber loaded with _TiO2 coating The micropores in the felt are developed synchronously, and the mesopores not only improve the diffusion ability of molecules in the micropores, but also improve the equilibrium coverage of the surface of the micropores. In the process of preparing activated carbon fiber felt loaded with TiO ₂ coating, in-situ synchronous addition of nano-sized TiO ₂ can realize the uniform distribution of TiO ₂ catalytic material on the carbon surface in the carbon fiber material, increase the number of catalytic sites on the inner surface of the carbon fiber, and improve The catalytic reaction rate can be reduced, and the load of the subsequent _TiO2 coating can be reduced to reduce the cost. In the preparation process of activated carbon fiber felt loaded with _TiO2 coating, the specific pore size structure and adsorption performance of activated carbon fiber for indoor harmful pollutants can be obtained by adjusting the ratio of the added mixed substances and adjusting the carbonization and activation temperature and time , Effectively improve indoor air quality.

In this embodiment, the activated carbon fiber mat loaded with _TiO2 coating is used to control the distribution of pores on the activated carbon fiber in situ. The activated carbon fiber is used as an adsorbent in situ, and the physical adsorbent is coupled with the photocatalytic oxidation technology. Through the adsorption of the physical adsorbent The effect is to enrich the organic pollutants and fine particulate matter in the air, which can increase the reaction substrate concentration and catalytic reaction rate of photocatalytic oxidation, and realize the adsorption and removal of catalytic reaction intermediate products; It can improve the utilization efficiency and activity of the catalyst; the combination of adsorption and photocatalysis, the photocatalysis process can simultaneously realize the re-release of the carbon fiber surface that has been adsorbed and saturated, which actually realizes the in-situ synchronous regulation of the surface adsorption of activated carbon fibers Point regeneration can effectively prolong the service life of carbon fiber. Therefore, the photocatalytic oxidation technology based on physical adsorbent as a carrier can not only give full play to the characteristics of a single purification technology, but also realize the synergistic effect of adsorption and photocatalytic oxidation, improve the reaction rate of photocatalytic oxidation, and improve the adsorption efficiency and purification degree. .

The outdoor fresh air and part of the indoor return air are introduced into the air-conditioning system. The fresh air and return air first pass through the air intake section 13 and are fully mixed; then pass through the micro-electric field adsorption purification device 1 for coarse filtration, and are mixed and adsorbed by activated carbon particles, zeolite, and bamboo charcoal particles. And through an external electric field, the large particles of 10 μm to 100 μm move regularly, adsorbed on the surface of the mixed adsorbent of activated carbon particles, zeolite, and bamboo charcoal particles on the positive side of the electrode plate, and release a small amount of negative ions on the negative side of the electrode plate, making indoor air Generate a small amount of negative oxygen ions to improve indoor freshness; then pass through the activated carbon fiber purification device in zone I, and then further absorb through ordinary activated carbon fiber felt, and absorb dust and polluting organic matter of 1 μm to 10 μm in it; then use microwaves in zone II to enhance photocatalytic air The purification device further adsorbs harmful substances in the air through the activated carbon fiber felt loaded with TiO ₂ coating, and catalyzes the oxidation into carbon dioxide and water, and at the same time deodorizes and bacteriostabilizes the air. This filter section greatly improves air quality. In winter, the air can also be heated by the microwave generator 2-3 in the photocatalytic oxidation process, so the preheating device 5 and the reheating device 8 can be turned off. This method can reduce energy consumption and save energy. In summer, the heating process of the air is canceled, the air cooler device 6 is turned on, the air is cooled, and then humidified by spraying steam; this process is to heat/cool and humidify the air, and then the air is passed through The air supply duct is sent into the room, and a micro-ozone generator 3 is added in the rear section of the blower to improve the freshness of the air. Simultaneously, in order to prevent the section passing through after the coarse filter section and the microwave enhanced photocatalytic air purification device from being mixed with other substances, a deep air purification device 4 is set between the blower device 9 and the air supply duct 14 to improve the air quality again, so that The indoor air can reach a purification degree of more than 99%. The room contains almost no pollutants that are harmful to the human body. Meeting people's requirements for high-precision, high-quality air-conditioning purification capabilities is beneficial to the development of human physical and mental health.

Claims (5)

1. the system for coupling electric microfield absorption with microwave enhancing photocatalysis air-cleaning unit, it is characterised in that it includes air inlet section (13), electric microfield adsorptive purifier (1), microwave enhancing photocatalysis air cleaning device (2), micro- ozone generating-device (3), depth Spend air cleaning unit (4), preheating apparatus (5), aerial cooler device (6), spraying steam humidifier (7), reheat machine (8), ventilating device (9) and shell (10)；

Along wind flow direction, air inlet section (13), electric microfield adsorptive purifier (1), microwave enhancing are set gradually in shell (10) Photocatalysis air cleaning device (2), preheating apparatus (5), aerial cooler device (6), spraying steam humidifier (7), reheating Device (8), ventilating device (9), micro- ozone generating-device (3) and depth air cleaning unit (4)；Air inlet section (13) level side It is connected to fresh air pipeline (11), is connected above air inlet section (13) with vertically disposed return air duct (12), depth air Purification device (4) horizontal direction is connected with air supply duct (14)；

The electric microfield adsorptive purifier (1) include filter screen (1-1), space framework (1-2), wire, electrode plate and Honeycomb sorbent material (1-5)；The wire includes inlet side wire (1-3-1) and air side wire (1-3-2)； The electrode plate includes inlet side anode electrode plate (1-4-1) and air side negative el (1-4-2)；Filter screen (1-1) It is fixed on space framework (1-2), and space framework (1-2) and filter screen (1-1) surround cavity, inlet side wire (1-3- 1) and air side wire (1-3-2) is covered each by the inlet side and air side of filter screen (1-1) inner surface, inlet side anode Electrode plate (1-4-1) and air side negative el (1-4-2) are respectively arranged at the two sides space framework (1-2), and inlet side gold Belong to silk (1-3-1) to be connected with inlet side anode electrode plate (1-4-1), air side wire (1-3-2) and air side negative electrode Plate (1-4-2) is connected；Filled honeycomb shape adsorbent material (1-5) in the cavity that space framework (1-2) and filter screen (1-1) are surrounded；

Microwave enhancing photocatalysis air cleaning device (2) includes that the area I activated carbon fibre purification device and the area II microwave increase Strong photocatalysis air cleaning device, and the area I activated carbon fibre purification device and the increasing of the area II microwave are set gradually along wind flow direction Strong photocatalysis air cleaning device；

The area the I activated carbon fibre purification device is 1 floor active carbon fiber felt filter device (2-1), active carbon fiber felt mistake Filter device (2-1) is that active carbon fiber felt at undaform and is fixed on Wave plate shape structural framing；

The active carbon fiber felt with a thickness of 1cm~3cm；

The area the II microwave enhancing photocatalysis air cleaning device includes that the load of 2 floor has TiO₂The active carbon fiber felt mistake of coating Filter device (2-2), microwave generator (2-3) and ultraviolet source (2-4)；Load has TiO₂The active carbon fiber felt of coating filters dress It sets (2-2) to be set side by side, the load has TiO₂The active carbon fiber felt filter device (2-2) of coating, which is negative, is loaded with TiO₂It applies The active carbon fiber felt of layer at undaform and is fixed on Wave plate shape structural framing, and microwave generator (2-3) is set to load There is TiO₂Between the active carbon fiber felt filter device (2-2) and preheating apparatus (5) of coating, ultraviolet source (2-4) is set to 2 Layer load has TiO₂Between the active carbon fiber felt filter device (2-2) of coating and it is in bending section；

The load has TiO₂The active carbon fiber felt of coating with a thickness of 1cm~3cm；

The depth air cleaning unit (4) is that 2 layers of active carbon fiber felt filter device (2-1) are set side by side.

2. the system of coupling electric microfield absorption according to claim 1 and microwave enhancing photocatalysis air-cleaning unit, It is characterized in that the filter screen (1-1) is plate or undaform.

3. the system of coupling electric microfield absorption according to claim 1 and microwave enhancing photocatalysis air-cleaning unit, It is characterized in that micro- ozone generating-device (3) is interior and is equipped with micro- ozone generator (3-1).

4. the system of coupling electric microfield absorption according to claim 1 and microwave enhancing photocatalysis air-cleaning unit, It is characterized in that the preheating apparatus (5) is interior and is equipped with gas-slab.

5. the system of coupling electric microfield absorption according to claim 1 and microwave enhancing photocatalysis air-cleaning unit, It is characterized in that electric microfield adsorptive purifier (1), microwave enhancing photocatalysis air cleaning device (2) and the preheating apparatus (5) it is obliquely installed internal in shell (10).