CN2621047Y - Air disinfection purification apparatus - Google Patents

Abstract

The utility model discloses an air disinfection purifier, which comprises a casing, a power supply control, a switch, a control button, a timing setting, a power plug arranged outside the casing, a fan, a partition, and a catalytic reaction device inside the casing. The device, dust removal device, and catalytic reaction device include ultraviolet lamps, pulsed high-voltage nano-photocatalytic nets and adsorption photocatalytic filters. Below, the fan is installed at the exhaust port. This product has the functions of air disinfection and sterilization, catalytic degradation of organic pollutant gases, and removal of pollutant particles. Moreover, due to the double excitation effect of pulsed high voltage and ultraviolet light on nano-semiconductor oxides, the efficiency of sterilization and organic pollution gas degradation is greatly improved.

Description

air disinfection purifier

technical field

The utility model relates to an air disinfection purifier.

Background technique

Since the SARS epidemic, the demand for air disinfection has greatly increased in all aspects (including hospitals, public places, subways, offices, shopping malls, etc.). Existing air disinfection methods are mainly peracetic acid mist fumigation and ultraviolet lamp disinfection. Disinfection with peracetic acid mist fumigation is highly corrosive to equipment and severely irritating to human eyes and respiratory tract; people cannot be on site when disinfecting with ultraviolet lamps, and their use is restricted. Other methods, due to their low sterilization efficiency, cannot meet the hygienic standards for on-site hospital disinfection of GB15982-1995. There is an urgent need for air disinfection technology and equipment with no toxic and side effects and good sterilization effect.

Contents of the invention

The purpose of this utility model is to provide a kind of use TiO ₂ nanometer photocatalytic material under the double excitation action of pulse high voltage non-equilibrium state electric field and ultraviolet ray, decompose microbes and organic pollutants in air, and adopt filtering device to remove polluting particles , to achieve air disinfection and purification of the air disinfection purifier.

An air disinfection and purifier of the utility model comprises a housing, a power control, and an air inlet, an exhaust port, a power switch, a power plug, a control button, and a time setting arranged on the housing. The fan, dust removal and filtering device, also includes a catalytic reaction device composed of an ultraviolet lamp, a pulsed high-voltage nano-photocatalytic net and an adsorption photocatalytic filter. Where the partition has holes, the partition is fixed in the casing, and the ultraviolet lamp is installed on the casing below the partition.

The air disinfection purifier is a catalytic reaction device composed of a UV lamp, a pulsed high-voltage nano-photocatalytic net and an adsorption photocatalytic filter. It has the double excitation of a pulsed high-voltage non-equilibrium electric field and ultraviolet rays, which can make valence electrons transition and The number of holes generated is greatly increased, thereby significantly improving the efficiency of the catalytic reaction. At the same time, the adsorption photocatalytic filter has a good adsorption function. The above effects greatly improve the efficiency of the sterilization of this product and the degradation of organic pollutant gases.

Said air disinfection purifier, its pulse high-voltage nano-photocatalytic net is a metal net coated with rare-earth-doped nano- _TiO2 photocatalytic material.

Described air disinfection purifier, its adsorption photocatalytic filter screen is by the activated carbon fiber fabric net that the surface is coated with rare earth-doped nano TiO ₂ photocatalytic material.

In the air disinfection purifier, the size of the TiO ₂ particles on the pulsed high-voltage nano photocatalytic net and the adsorption photocatalytic filter net is less than 30 nanometers.

The air disinfection and purifier described above, when the pulsed high-voltage nano photocatalytic network is working, is connected to a high-voltage pulse power supply of 10-30KV.

Said air disinfection purifier, its dust removal and filtering device is composed of a high-voltage electrostatic dust collection net, a coarse filter and a fine filter, and the high-voltage electrostatic dust collection net is connected to a high-voltage electrostatic power supply when it is working.

The utility model has the advantages: the dual excitation of pulsed high-voltage non-equilibrium electric field and ultraviolet rays can greatly increase the number of valence electron transitions and hole generation, and at the same time, the adsorption photocatalytic filter has a good adsorption function. The efficiency of sterilization and organic pollution gas degradation of this product is greatly improved. This product will not produce toxic and side effects of conventional standard air disinfection methods (peracetic acid fumigation method and ultraviolet lamp sterilization method) during use.

Description of drawings

Fig. 1 is a structural sectional view of the utility model.

Fig. 2 is a front view of the shell appearance.

Fig. 3 is a circuit diagram of the utility model.

In the figure: 1. Time setting 2. Power switch 3. Control button 4. Housing 5. Fan 6. Partition 7. Adsorption photocatalytic filter 8. Pulse high-voltage nano-photocatalytic net 9. High-voltage pulse power supply 10. High voltage Electrostatic dust collector 11. Coarse filter 12. Fine filter 13. Ultraviolet lamp 14. High-voltage electrostatic power supply 15. Air inlet 16. Exhaust port

Detailed ways

The utility model is a novel nano-material photocatalytic air disinfection purifier, which is controlled by a housing 4, a power supply, an air inlet 15, an exhaust outlet 16, a power switch 1, a time setting 2, Control button 3, power plug, fan 5, partition 6, adsorption photocatalytic filter 7, pulse high voltage nano photocatalytic net 8, ultraviolet lamp 13, and dust removal filter device are formed in the housing 4. The air inlet 15 is located at the lower half of the housing 4, and the air inlet 15 is provided with a dust removal filter, and the dust removal filter is fixed by a high-voltage electrostatic dust collection net 10, a coarse filter 11 and a fine filter 12 in this order. The high-voltage electrostatic dust collection net 10 is connected to the high-voltage electrostatic power supply 14 when it is working. Exhaust port 16 is located at the top of housing 4, and the below of exhaust port 16 promptly is provided with fan 5 in housing, and fan 5 is fixed in housing 4 by fan case, and the below of fan 5 is provided with dividing plate 6, divider The plate 6 is sealed and fixed on the shell 4, and an adsorption photocatalytic filter 7 and a pulsed high-voltage nano-photocatalytic net 8 are installed at the holes of the partition 6, and the pulsed high-voltage nano-photocatalytic net 8 and the adsorbed photocatalytic filter 7 are closely attached to the Together, the ultraviolet lamp 13 is fixed in the casing 4 .

The power supply control circuit of the present utility model is illustrated by Fig. 3 . The entire control system works in a power supply environment with 220V voltage and 50ZH frequency. T1 is a double-pole switching power supply, which can cut off the phase line and neutral line at the same time, completely disconnected from the power supply grid, and ensure the safety of users; The circuit breaker (R1, R2) makes the whole circuit have an obvious disconnection point and sets up a safety guarantee.

S1 in the circuit is an electronic timer, which is freely set by the user to turn on and turn off the system, and the number of turns on can be set arbitrarily by the user.

B1 is a high-voltage electrostatic generator, which provides DC high voltage for the electrostatic dust collection net 10 to suck floating dust into the net to achieve the effect of dust filtration.

B2 is a high-voltage pulse generator, which provides high-voltage pulses for the photocatalytic network 8 to form a high-voltage pulse electric field, which effectively improves the catalytic efficiency.

D1 is the UV lamp power supply.

T2 is the fan power switch.

M1 is the fan drive motor.

In the air purifying and sterilizing device of the present utility model, its pulse high-voltage nano photocatalytic net 8 is a metal net coated with rare earth-doped nano _TiO2 photocatalytic material, and the pulse high voltage nano photocatalytic net 8 is connected to 10-30KV pulse high voltage when working. Power supply 9, under the action of the non-equilibrium electric field generated by the pulsed high voltage and the common valence electron transition excitation of ultraviolet rays, the photocatalytic efficiency of nano-TiO ₂ photocatalytic materials will be significantly higher than that of the valence electron transition excitation of ultraviolet rays only.

In the air purifying and disinfecting device of the present utility model, its adsorption photocatalytic filter screen 7 is made of activated carbon fiber fabric whose surface is coated with rare earth-doped nano _TiO2 photocatalytic material, and has photocatalytic degradation and adsorption functions.

In the air purifying and disinfecting device of the present utility model, the pulsed high-voltage nano-photocatalytic net 8 and the adsorption photocatalytic filter screen 7 are closely attached together, so that the pulsed high-voltage nano-photocatalyzed net 8 produces a non-equilibrium strong electric field. The nano- _TiO2 photocatalytic material on the surface of the adsorbed photocatalytic filter screen 7 also has an exciting effect on the transition of valence electrons. Under the combined action of the ultraviolet lamp 13 light source and the pulsed high-voltage electric field, the pulsed high-voltage nano-photocatalytic net 8 and the adsorption photocatalytic filter 7 can achieve high-efficiency photocatalytic degradation of organic pollutants, bacteria, and viruses in the air, and realize the purification of the air. Purify and sanitize.

Turn on the power switch 1, the fan 5, the ultraviolet lamp 13, the high-voltage electrostatic power supply 14 and the high-voltage pulse power supply 9 are powered on, and when the fan 5 rotates to form an air flow, the external gas to be purified is sucked into the disinfection purifier through the air inlet 15 Inside. Through the electrostatic dust collection net 10, the coarse filter net 11, and the fine filter net 12, the fine dust particles in the air are filtered out, and the airflow enters the photocatalytic area; In the catalytic zone, under the double excitation of pulsed high-voltage electric field and ultraviolet rays, the hydroxyl radicals and active oxygen generated by nano-TiO ₂ oxidize and decompose bacteria, viruses and organic pollutants in the air into CO ₂ and water vapor. After disinfection and The purified air is finally discharged from the exhaust port 16 .

In the experiment, the inventor used the self-made disinfection purifier prototype to conduct an on-site air sterilization experiment in the hospital. The room area was 6-7 square meters, and the closed sterilization was carried out. The sterilization results are as follows: disinfection time Before disinfection Disinfect for 10 minutes Disinfect for 20 minutes Disinfect for 40 minutes Bacteria number (a/m ³ ) 940 0 0 0

In the experiment, the inventor used the self-made disinfection purifier prototype to conduct an on-site nano-photocatalytic degradation of air pollution in an office building. The test results are as follows: Degradation time Formaldehyde (mg/m ³ ) Ammonia (mg/m ³ ) Toluene (mg/m ³ ) Before degradation 0.3036 0.1709 0.465 1 hour 0.143 0.0665 0.2692 2 hours 0.137 0.0427 0.2428 16 hours 0.0782 0.009 0.1006

Principle of photocatalytic degradation: TiO ₂ has a forbidden band width of 3.2eV (anatase type). Under light irradiation with a wavelength of less than 400nm, electrons in the valence band are excited to the conduction band to form hole-electron pairs. The electrons and holes are separated and migrate to different locations on the surface of the particle. The thermodynamic theory shows that the holes h+ distributed on the surface can oxidize the OH- and H ₂ O molecules adsorbed on the surface of TiO ₂ into hydroxyl radicals. The oxidation ability of hydroxyl radicals is the strongest among the oxidants existing in water bodies. It can oxidize most organic pollutants and some inorganic pollutants, and finally degrade them into harmless substances such as CO ₂ and H ₂ O. Moreover, the hydroxyl radicals are free The radical has almost no selectivity to the reactants and thus plays a decisive role in the photocatalytic oxidation.

This product adopts the dual excitation of pulsed high-voltage non-equilibrium electric field and ultraviolet rays, which can greatly increase the number of valence electron transitions and holes generated. At the same time, the adsorption photocatalytic filter has a good adsorption function. The efficiency of bacteria and organic pollutant gas degradation is greatly improved. This product will not produce toxic and side effects of conventional standard air disinfection methods (peracetic acid fumigation method and ultraviolet lamp sterilization method) during use.

The product of the utility model can be applied in hospitals, hotels, conference rooms and families.

Claims (7)

1, a kind of air disinfection purifier, comprise housing, power supply control, and be located at air inlet on the housing, air vent, on and off switch, attaching plug, control knob, time is provided with, and be located at the intravital fan of shell, dedusting filter, it is characterized in that: also comprise by uviol lamp (13), the catalyst reaction device that high voltage pulse nano-photo catalytic net (8) and adsorption photochemical catalysis filter screen (7) are formed, high voltage pulse nano-photo catalytic net (8) and adsorption photochemical catalysis filter screen (7) are close together, and be installed in the porose place of dividing plate (6), dividing plate (6) is fixed in the housing (4), and uviol lamp (13) is installed on the housing (4) of dividing plate (6) below.

2, air disinfection purifier according to claim 1, it is characterized in that: the catalyst reaction device of forming by uviol lamp (13), high voltage pulse nano-photo catalytic net (8) and adsorption photochemical catalysis filter screen (7), have high voltage pulse nonequilibrium state electric field and ultraviolet dual excitation, the quantity that valency electron transition and hole are produced increases greatly, thereby significantly improve catalytic reaction efficient, adsorption photochemical catalysis filter screen (7) has good adsorption function simultaneously, and above-mentioned effect greatly improves the sterilization of this product and the efficient of organic pollutant degraded.

3, air disinfection purifier according to claim 1 is characterized in that: high voltage pulse nano-photo catalytic net (8) is that the surface scribbles the nano-TiO that mixes up rare earth ₂The wire netting of catalysis material.

4, air disinfection purifier according to claim 1 is characterized in that: adsorption photochemical catalysis filter screen (7) is to scribble the nano-TiO that mixes up rare earth by the surface ₂The NACF fabric web of catalysis material.

5, according to claim 3,4 described air disinfection purifiers, it is characterized in that: the TiO on high voltage pulse nano-photo catalytic net (8) and the adsorption photochemical catalysis filter screen (7) ₂Particulate size is less than 30 nanometers.

6, air disinfection purifier according to claim 1 is characterized in that: the high-voltage pulse power source (9) of connecting 10～30KV during high voltage pulse nano-photo catalytic net (8) work.

7, air disinfection purifier according to claim 1, it is characterized in that: dedusting filter is to be made of high-pressure electrostatic dust-collecting net (10), coarse filtration net (11) and finly filtration net (12), connects high-voltage electrostatic power (14) during high-pressure electrostatic dust-collecting net (10) work.

Images