CN111617277A - A kind of sterilization and disinfection device and its sterilization and disinfection method - Google Patents

Abstract

The invention relates to the technical field of indoor environment sterilization and disinfection, in particular to a sterilization and disinfection device and a sterilization and disinfection method, wherein the sterilization and disinfection device comprises a cabinet body, a plurality of ultraviolet lamps which are externally arranged on the cabinet body and can generate at least 10mg of ozone per minute, an air inlet arranged on the cabinet body, a first catalytic net arranged on the inner side of the air inlet, a fan, an air outlet arranged on the cabinet body and communicated to the inner side of the first catalytic net, a control panel and an automatic control induction system for controlling the operation of the ultraviolet lamps and the fan, wherein the fan, the control panel and the automatic control induction system are all arranged on the cabinet body; the automatic control induction system is electrically connected with the control panel, and the total power of the ultraviolet lamps is at least 300W. The invention overcomes the problems that the prior art is difficult to achieve high-efficiency, comprehensive and thorough sterilization and disinfection effects and harmful substances can be remained after sterilization and disinfection, and provides the sterilization and disinfection device which can efficiently, comprehensively and thoroughly sterilize and disinfect, is environment-friendly, has no pollution and does not remain harmful substances.

Description

A kind of sterilization and disinfection device and its sterilization and disinfection method

technical field

The invention relates to the technical field of sterilization and disinfection of indoor environments, and more particularly, to a sterilization and disinfection device and a sterilization and disinfection method thereof.

Background technique

In recent years, major public health security has occurred frequently, including SARS, H1N1 and H7N9 avian influenza, MERS, and the outbreak of the new coronavirus at the end of 2019, resulting in severe bacterial and viral threats to people's life, work and public environment. There are many sources of bacteria and viruses in the indoor environment, which widely exist in the air, surfaces and interiors of objects. People are infected with bacteria and viruses through adsorption and contact. Therefore, it is very urgent and urgent to strengthen the research on all-round and deep sterilization technology of indoor environment, which is of great strategic significance for improving air environment quality and improving people's health. Ultraviolet photocatalytic ozone oxidation technology is an advanced oxidation technology with mild reaction conditions, high removal efficiency, and no secondary pollution. It has gradually become a research hotspot and has been widely used in indoor air purification, factory waste gas treatment and other environments. In the prior art, ultraviolet lamps are directly used to purify the air and sterilize, but the distance and sterilization ability of ultraviolet rays alone are limited, which often cannot achieve a good purification effect; there is also the use of ozone generators to generate ozone and ultraviolet lamps for For air purification and sterilization, ultraviolet lamps are generally installed in the equipment, and the fan is used to inhale the air into the equipment for purification. Due to the influence of wind speed and the obstruction of objects, ultraviolet rays often cannot play their full role, and can only purify the air in the purifier cavity. , it can hardly play a role in bacteria and viruses such as sofas, desktops, bed surfaces, pillows and other microorganisms. In addition, the use of ozone to purify the air requires the ozone concentration to reach a certain concentration, but the "Indoor Air Quality Standard" requires that the indoor ozone concentration is not higher than 0.1 mg/m ³ under normal circumstances, and the normal use of ozone disinfection methods usually cannot reduce ozone in a short time. Within the specified threshold, and the residual ozone after sterilization and disinfection cannot be efficiently utilized, resulting in low purification capacity and efficiency, and the residual ozone in the room is likely to cause secondary damage to human health.

The patent (publication number CN206709246U) discloses an ultraviolet air sterilizer, the wavelength of the ultraviolet lamp used in the equipment is 254nm, and the power is 8W. Ultraviolet lamps with a wavelength of 254nm can hardly produce ozone, and the power is too small, and the sterilization ability is extremely limited. The patent (publication number CN210197512U) discloses an integrated equipment for sterilization and ozone purification. The equipment mainly uses 185nm and 254nm ultraviolet lamps for sterilization and disinfection. The ultraviolet lamps are placed in the equipment, and the power of the ultraviolet lamps is limited by the size and space of the equipment. Generally, about 5W is used. According to "Ozone Technology and Application", the concentration of ozone disinfection in general places is 2 ~ 4mg/m ³ . For large indoor spaces, the amount of ozone is difficult to achieve; and the ultraviolet lamp is placed in the equipment, in the air Therefore, it is difficult to achieve efficient, comprehensive and thorough sterilization and disinfection effects. The catalytic net used in the patent has only limited ozone elimination ability. Moreover, it does not have the function of efficient utilization of residual ozone, and fails to achieve rapid and mass production of ozone, efficient elimination and resource utilization.

SUMMARY OF THE INVENTION

The object of the present invention is to overcome the problems that the prior art is difficult to achieve high-efficiency, comprehensive and thorough sterilization and disinfection effects and residual harmful substances after sterilization and disinfection, and provides a high-efficiency sterilization and disinfection device that utilizes a high-power external ultraviolet lamp and its generation The high-concentration ozone is used for comprehensive and thorough sterilization, and the catalytic net is used to eliminate residual ozone after sterilization, and the hydroxyl groups generated during ozone decomposition are used for secondary sterilization, so as to achieve environmental protection, no pollution and no residual harmful substances. Good sterilization and disinfection effect.

In order to solve the above-mentioned technical problems, the technical scheme adopted in the present invention is:

A sterilization and disinfection device is provided, which includes a cabinet body, a plurality of ultraviolet lamps externally placed on the cabinet body that can generate at least 10 mg of ozone per minute, an air inlet arranged on the cabinet body, and a first The catalytic net, the fan, the air outlet arranged on the cabinet and connected to the inner side of the first catalytic net, the control panel, the automatic control induction system that controls the operation of the ultraviolet lamp and the fan through the detection of the ozone concentration and the setting of the timing switch, The fan, the control panel, and the automatic control induction system are all arranged on the cabinet; the automatic control induction system is electrically connected to the control panel, and the total power of the plurality of ultraviolet lamps is at least 300W .

The invention has the advantages of efficient, comprehensive and thorough sterilization and disinfection effect and no harmful substances remain after the sterilization and disinfection. Specifically, the power of a single UV lamp of the present invention is 80-150W, and the amount of ozone that a single UV lamp can generate per minute is at least 10 mg. The lamp power is about 5W, and the ozone concentration produced is limited, and the total power of several ultraviolet lamps of the present invention is at least 300W, so it belongs to high-power ultraviolet lamps, which can generate strong ultraviolet rays for sterilization and disinfection, and according to a single ultraviolet lamp As far as the amount of ozone that can be generated per minute is at least 10 mg, it belongs to high-concentration ozone, which can increase the indoor ozone concentration in a short time and achieve a good sterilization and disinfection effect. If it is closed, this stage will only cause ozone to accumulate, and the concentration will continue to increase. Compared with the equipment in the prior art that generates ozone and turns on the fan at the same time, the ozone generating capacity is stronger. The ultraviolet lamp is set on the outside of the sterilization and disinfection device, which can directly irradiate the ultraviolet rays to the air and the surface of the object outside the device for comprehensive and thorough sterilization and disinfection without dead ends. The air inlet, the first catalytic net, the fan, and the air outlet are arranged to facilitate the elimination of ozone remaining in the air after sterilization by ozone, thereby achieving the purpose of environmental protection, no pollution and no residual harmful substances. The settings of the control panel and the automatic control induction system can enable the sterilization and disinfection device to realize automatic sterilization and disinfection after the ultraviolet lamp is turned on. In the sterilization and disinfection process of the present invention, the ozone concentration is relatively high, and it must be carried out in the absence of human beings.

Preferably, the number of the ultraviolet lamps is 2-6.

Preferably, the plurality of ultraviolet lamps are uniformly arranged along the circumferential direction outside the cabinet.

Preferably, the air outlet is arranged on the top of the cabinet, and a second catalytic net is arranged below the air outlet.

Preferably, the first catalytic net and the second catalytic net are both catalytic nets of ZSM-5/Mn-Ce molecular sieve supported manganese-cerium active component catalyst with dual functions of ozone elimination and utilization.

Preferably, there are several air inlets, which are evenly arranged along the side surface of the cabinet.

Preferably, the automatic control induction system includes an ozone concentration detector disposed outside the cabinet and a timing switch disposed in the cabinet.

Preferably, the bottom of the cabinet is provided with several universal wheels.

Preferably, a shutter is provided outside the air outlet.

The invention directly sterilizes and disinfects microorganisms such as sofas, desktops, bed surfaces, pillows and other microorganisms that are easy to absorb residual bacteria and viruses through the high-concentration ozone generated by external high-power ultraviolet lamps and ultraviolet lamps, and uses high-concentration ozone to sterilize the air and every corner. After a period of time, the fan is turned on, and the residual bacterial virus dormant body and ozone in the air are sucked into the purification device, so that the ozone can be quickly decomposed and eliminated under the action of the first catalytic net, and can generate more active hydroxyl groups , and then further kill the residual fragments and dormant bodies of bacteria and viruses. Compared with the traditional sterilization using toxic and corrosive chemical methods, the present invention is more environmentally friendly, does not leave irritating odors, and is more beneficial to human health; The ability is weak and the time is long, and there is the phenomenon of virus suspended animation and reversibility, the virus inactivation is not complete, and the virus cannot be deeply killed. Effectively carry out sterilization; compared with the use of ozone for sterilization, in the prior art, either the ozone concentration is low, resulting in low efficiency and the purpose of completely inactivating bacteria and viruses cannot be achieved, or high-concentration ozone is used for sterilization, but there is no sterilization after sterilization. The elimination of ozone results in that the ozone cannot be eliminated for a long time and the residual ozone affects human health. The sterilization and disinfection device of the present invention can use the catalytic net to quickly decompose and eliminate the residual ozone after high-concentration ozone sterilization, so that the indoor environment can meet the standard of human health; The conventional ultraviolet lamp synergistic ozone sterilization device uses the principle of dynamic sterilization. Since the "Indoor Air Quality Standard" requires that the indoor ozone concentration is not higher than 0.1mg/m ³ under normal circumstances, the power of the ultraviolet lamp used is relatively small. Therefore, the sterilization effect is poor, and the sterilization and disinfection device of the present invention uses a high-power ultraviolet lamp, and uses the ultraviolet lamp to cooperate with the high-concentration ozone sterilization technology to perform static sterilization, and the sterilization effect is better. The invention has the advantages of strong sterilization and disinfection ability, thorough depth, high efficiency and stability, strong moisture resistance, quick elimination and utilization of ozone, and no secondary pollutants.

The present invention also provides a sterilization and disinfection method using the above-mentioned sterilization and disinfection device, and the specific steps are as follows:

1) The ultraviolet lamp (2) cooperates with ozone sterilization and disinfection stage: turn on the ultraviolet lamp (2), and the ultraviolet lamp (2) uses ultraviolet rays for sterilization and disinfection while generating at least 10 mg of ozone per minute, using ozone to inactivate viruses, and then the ozone concentration rise rapidly;

2) High-concentration ozone sterilization and disinfection stage: the automatic control induction system (7) detects the indoor air, when the ozone concentration in the indoor air is detected to be ≥30 mg/ ^m3 , or 20 minutes after the ultraviolet lamp (2) is turned on , turn off the ultraviolet lamp (2), after that, as time changes, the ozone concentration decreases continuously while sterilizing and disinfecting;

3) Decomposition of residual ozone and secondary sterilization and disinfection by hydroxyl groups: Turn on the fan 10 minutes after the UV lamp (2) is turned off. After that, the residual ozone in the air enters the sterilization and disinfection device from the air inlet under the action of the fan, and passes through the ZSM containing ZSM. The catalytic net of -5/Mn-Ce molecular sieve loaded with manganese-cerium active component catalyst is rapidly catalyzed and decomposed into hydroxyl groups that are harmless to the human body and have stronger activity against bacteria and viruses, and further kill bacteria and viruses and other residual fragments and dormant bodies. ;

4) Completion of sterilization and disinfection: when the automatic control induction system (7) detects that the ozone concentration in the indoor air is less than or equal to 0.1 mg/ ^m3 , the fan is turned off. At this time, the ozone concentration in the air has met the safety standard, and the entire sterilization and disinfection process is over.

The sterilization and disinfection method of the present invention utilizes an external high-power high-energy ultraviolet lamp to synergize with high-concentration ozone for catalytic sterilization and disinfection, and the comprehensive technology of efficient utilization and rapid elimination of residual ozone under the action of a catalytic net achieves efficient, comprehensive and thorough sterilization and disinfection without environmental protection. The purpose of pollution without residual harmful substances.

Compared with the prior art, the beneficial effects of the present invention are:

(1) Strong sterilization and disinfection ability, thorough depth, high efficiency, stability and moisture resistance, and can quickly eliminate and utilize ozone without secondary pollutants;

(2) After the external ultraviolet lamp is turned on, the ultraviolet lamp can be used for sterilization and high concentration of ozone can be rapidly produced. The two can synergistically sterilize and disinfect, and the ozone concentration at this stage is continuously increasing. At this time, the fan in the equipment is turned off. , there will be no phenomenon that ozone is generated while decomposing and eliminating ozone;

(3) After using high-concentration ozone for sterilization, enter the stage of eliminating residual ozone in the air, so that ozone is rapidly decomposed and eliminated under the action of the catalytic net, and can generate more active hydroxyl groups, and then further remove the residual bacteria and viruses. Destruction of fragments and dormant bodies;

(3) Environmental protection, and no pungent odor remains, which is more beneficial to human health;

(4) The catalytic net of ZSM-5/Mn-Ce molecular sieve-loaded manganese-cerium active component catalyst with dual functions of ozone elimination and utilization not only has the function of efficiently eliminating residual ozone, but also can effectively utilize ozone to enhance sterilization and disinfection, and has Efficient moisture resistance, no need to replace the filter regularly, more economical and save labor and time costs.

(5) The entire sterilization and disinfection process is automatically set, and it only needs to be manually turned on to work automatically. The whole process is worry-free until the entire sterilization and disinfection work is completed. It is very convenient, saves time and effort, and is humanized design.

Description of drawings

Fig. 1 is the front view of a kind of sterilization and disinfection device of the present invention;

Fig. 2 is the top view of Fig. 1;

Fig. 3 is the top view after removing the top of Fig. 1;

Fig. 4 is the partial schematic diagram of Fig. 1;

Fig. 5 is a working flow chart of a sterilization and disinfection method of the present invention.

The icon marks are explained as follows:

1. Cabinet body; 2. Ultraviolet lamp; 3. Air inlet; 4. The first catalytic net; 5. Air outlet; 6. Control panel; 7. Automatic control induction system; 71. Ozone concentration detector; 8. Second Catalytic net; 9. Universal wheel; 10. Shutters; 11. Fan.

Detailed ways

The present invention will be further described below in conjunction with specific embodiments. Among them, the accompanying drawings are only used for exemplary description, and they are only schematic diagrams, not physical drawings, and should not be construed as restrictions on this patent; in order to better illustrate the embodiments of the present invention, some parts of the accompanying drawings will be omitted, The enlargement or reduction does not represent the size of the actual product; it is understandable to those skilled in the art that some well-known structures and their descriptions in the accompanying drawings may be omitted.

The same or similar numbers in the drawings of the embodiments of the present invention correspond to the same or similar components; in the description of the present invention, it should be understood that if there are terms “upper”, “lower”, “left” and “right” The orientation or positional relationship indicated by etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the indicated device or element must have a specific orientation, with a specific orientation. Orientation structure and operation, so the terms describing the positional relationship in the accompanying drawings are only used for exemplary illustration, and should not be construed as a limitation on the present patent. Those of ordinary skill in the art can understand the specific meanings of the above terms according to specific situations.

Example

As shown in FIG. 1 to FIG. 4, a sterilization and disinfection device of the present invention includes a cabinet 1, a plurality of ultraviolet lamps 2 externally placed on the cabinet 1 and capable of producing at least 10 mg of ozone per minute, and arranged in the cabinet. The air inlet 3 on the 1, the first catalytic net 4 arranged on the inside of the air inlet 3, the fan 11, the air outlet 5 arranged on the cabinet 1 and connected to the inside of the first catalytic net 4, the control panel 6, and the ozone The detection of concentration and the setting of the timing switch are used to control the automatic control induction system 7 of the operation of the ultraviolet lamp 2 and the fan 11. The fan 11, the control panel 6, and the automatic control induction system 7 are all set on the cabinet 1; the automatic control induction system 7 Electrically connected to the control panel 6, the total power of the plurality of ultraviolet lamps 2 is at least 300W.

As one of the specific embodiments provided by the present invention, there are 2 to 6 ultraviolet lamps 2 . The ultraviolet lamp 2 of the present invention can generate ozone while sterilizing, and the total power of the ultraviolet lamp 2 is at least 300W. Under the same total power, the more the number of ultraviolet lamps 2 is set, the lower the power requirement for a single ultraviolet lamp 2 is. , the heat generation of the ultraviolet lamp 2 will be less, and the overall size of the device can be smaller, this is for the safety of the entire sterilization and disinfection device and the tolerance of other components; in some indoor spaces are larger Under the circumstance that it is required to meet the needs of producing high-concentration ozone in a short time, a single lamp with higher power such as 150W UV lamp 2 will be used, so that the total power of 900W can be achieved by using 6 UV lamps 2, which can make indoor ozone If the concentration exceeds 30mg/m ³ in a short time, the purpose of efficient sterilization can be achieved.

As one of the specific embodiments provided by the present invention, a plurality of ultraviolet lamps 2 are uniformly arranged along the circumferential direction outside the cabinet body 1 . The cabinet body 1 of the present invention can be in various shapes such as a cylinder, a cuboid, a cube, etc., and the ultraviolet lamps 2 can be linear. When the number of ultraviolet lamps 2 is odd, they can be uniformly distributed along the circumferential direction. The above arrangement can make the UV lamp 2 cover a wider range, which is conducive to comprehensive and efficient sterilization. The ultraviolet lamp 2 can also be annular, directly surrounding the outside of the cabinet 1, and arranged at different heights.

As one of the specific embodiments provided by the present invention, the air outlet 5 is arranged on the top of the cabinet 1 , and a second catalytic net 8 is arranged below the air outlet 5 . The disposition of the second catalytic net 8 can further improve the catalytic elimination ability of residual ozone and further utilize ozone efficiently. The first catalytic net 4 is arranged inside the air inlet 3, and under the action of the fan 11, the ozone enters the sterilization and disinfection device from the air inlet 3 to pass through the first catalytic net 4 for the first catalytic elimination and efficient use. The density is relatively small, and it will flow upward. Before the gas reaches the air outlet 5, it will pass through the second catalytic net 8 for secondary catalysis, and the ozone that was missed for the first time or not completely catalytically decomposed will be catalytically decomposed again. Reuse, which forms a double insurance, ensures that the ozone that has passed through the sterilization and disinfection device can be completely eliminated and fully utilized, and further accelerates the elimination and utilization of indoor ozone.

As one of the specific embodiments provided by the present invention, the first catalytic net 4 and the second catalytic net 8 are both catalytic nets of ZSM-5/Mn-Ce molecular sieve-supported manganese-cerium active component catalyst with dual functions of ozone elimination and utilization . Compared with other catalyst nets, the catalyst net with molecular sieve-supported manganese-cerium active component catalyst can not only make efficient use of ozone, but also eliminate the secondary pollution of residual ozone, improve the sterilization ability and efficiency, and effectively prevent residual ozone. Ozone causes harm to the human body, and does not need to replace the filter regularly, which is more economical and saves labor and time costs. Specifically, ozone is rapidly decomposed and eliminated under the action of the first catalytic net 4 and the second catalytic net 8, and generates highly active oxidizing groups such as hydroxyl groups with stronger activity, which further enhances the sterilization and disinfection effect; ozone elimination and utilization are dual The functional ZSM-5/Mn-Ce catalyst uses molecular sieve as a carrier and supports Mn-Ce composite active components. The catalytic net has multiple functions, not only has excellent moisture resistance, but also can adsorb, capture and trap various bacteria in the air. , viruses and other microorganisms, can also efficiently decompose ozone and generate highly reactive hydroxyl radicals, etc., can further kill bacteria and viruses, eliminate residual ozone in a short period of time, while improving efficiency, greatly shorten purification time, and protect the environment in which the human body is located. It is harmless to health and solves the key problem of secondary ozone pollution in traditional technology. The research shows that the catalytic decomposition of ozone on ZSM-5 supported manganese-based bimetallic oxides, the bimetallic supported catalyst is optimized by adjusting the carrier, bimetallic species, and bimetallic loading, and it is compared with the moisture resistance of manganese-based monometallic catalysts. Compared. Through experiments, it can be found that the manganese-cerium supported catalyst has good ozone decomposition performance and good moisture resistance. 2Mn3Ce/ZSM-5 can maintain a removal efficiency of 98% for ozone with a concentration of up to 50mg/ ^m3 under 50% humidity, and the aging period can last for at least 6 months.

As one of the specific embodiments provided by the present invention, there are several air inlets 3 , which are evenly arranged along the side surface of the cabinet body 1 . The arrangement of a plurality of air inlets 3 in different directions can increase the area of the air inlets 3, and under the action of the fan 11, more air is sucked into the sterilization and disinfection device in a short time, and then the residual ozone in the air is efficiently passed through the catalytic net. Catalytic decomposition to eliminate.

As one of the specific embodiments provided by the present invention, the automatic control induction system 7 includes an ozone concentration detector 71 arranged outside the cabinet 1 and a timing switch arranged inside the cabinet 1 . The automatic control and induction system 7 can realize the automatic function of the entire sterilization and disinfection device. It only needs to be manually turned on to work automatically, and the whole process is worry-free until the entire sterilization and disinfection work is completed. Specifically, the automatic control induction system 7 realizes the timing function through the timing switch, which can be manually set to leave after a set time, and the sterilization and disinfection device can automatically turn on the ultraviolet lamp 2 to perform sterilization and disinfection after the set time is reached. When the ozone detected by the ozone concentration detector 71 reaches a certain concentration or the ultraviolet lamp 2 is turned on for a period of time, the ultraviolet lamp 2 will be automatically turned off. Reduce, the ozone concentration detector 71 automatically turns on the fan 11 after the detected ozone drops to a certain concentration, and carries out the elimination of residual ozone. After the ozone concentration detected by the ozone concentration detector 71 reaches the standard of human health, the sterilization and disinfection device It will automatically close to complete the entire sterilization and disinfection work.

As one of the specific embodiments provided by the present invention, the bottom of the cabinet body 1 is provided with several universal wheels 9 . The setting of the universal wheel 9 enables the sterilization and disinfection device to be moved conveniently, so as to facilitate the sterilization and disinfection of different areas. There may be four universal wheels 9 , which are evenly and symmetrically distributed at the bottom of the cabinet 1 .

As one of the specific embodiments provided by the present invention, a shutter is provided outside the air outlet 5 . The outflow direction of the air can be adjusted according to the direction of adjusting the shutters, and the shutters can block and filter to prevent impurities from directly falling into the sterilization and disinfection device from the air outlet 5 at the top of the cabinet 1 to avoid damaging the facilities in the device.

As shown in Figure 5, the present invention also provides a sterilization method using the above-mentioned sterilization and disinfection device, and the specific steps are as follows:

1) The ultraviolet lamp 2 cooperates with ozone sterilization and disinfection stage: turn on the ultraviolet lamp 2, and the ultraviolet lamp 2 uses ultraviolet rays for sterilization and disinfection while the amount of ozone generated per minute is at least 10 mg, and the ozone is used to inactivate the virus, and then the ozone concentration rises rapidly;

2) High-concentration ozone sterilization and disinfection stage: The automatic control induction system 7 detects the indoor air. When the ozone concentration in the indoor air is detected to be ≥30 mg/ ^m3 , or 20 minutes after the UV lamp 2 is turned on, the UV lamp is turned off. 2. Since then, with the change of time, the concentration of ozone is continuously reduced while sterilizing and disinfecting;

3) Decompose residual ozone and utilize hydroxyl to carry out secondary sterilization and disinfection stage: turn on fan 11 10 minutes after turning off UV lamp 2, after that, after the residual ozone in the air enters the sterilization and disinfection device from air inlet 3 under the action of fan 11, it contains The catalytic net of ZSM-5/Mn-Ce molecular sieve supported manganese-cerium active component catalyst is rapidly catalyzed and decomposed into hydroxyl groups that are harmless to the human body and have stronger activity against bacteria and viruses, and further kill bacteria and viruses and other residual fragments and dormant bodies. extinguish;

4) Completion of sterilization and disinfection: when the automatic control induction system 7 detects that the ozone concentration in the indoor air is less than or equal to 0.1 mg/m ³ , the fan 11 is turned off. At this time, the ozone concentration in the air has met the safety standard, and the entire sterilization and disinfection process ends.

The sterilization and disinfection method of the present invention utilizes an external high-power high-energy ultraviolet lamp 2 to cooperate with high-concentration ozone for catalytic sterilization and disinfection, and the comprehensive technology of efficient utilization and rapid elimination of residual ozone under the action of a catalytic net achieves efficient, comprehensive and thorough sterilization and environmental protection. The purpose of no pollution and no residual harmful substances.

Specifically, the sterilization and disinfection method of the present invention is divided into four stages:

In the first stage, the UV lamp 2 cooperates with ozone sterilization and disinfection stage: manually turn on the UV lamp 2 and then leave the room. Microorganisms are disintegrated, inactivated or dormant, preferably the total power exceeds 300W UV lamp2;

The second stage, the high-concentration ozone sterilization and disinfection stage: in the previous stage, ozone molecules are continuously accumulated. At this time, when the indoor air has exceeded 30mg/ ^m3 , or 20 minutes after the UV lamp 2 is turned on, turn off the UV lamp 2, Then rely on high-concentration ozone to deeply oxidize and decompose microorganisms such as bacteria and viruses in the indoor environment, and completely kill the difficult-to-kill parts such as dormant bodies and spores. This is also the process of ozone depletion, which can gradually reduce the ozone concentration;

In the third stage, the residual ozone is decomposed and the hydroxyl group is used for secondary sterilization and disinfection: this is a major highlight of the present invention. On the one hand, the rapid decomposition of residual ozone in the air is out of consideration for human health. The concentration of ozone in the ozone is controlled below 0.1 mg/m ³ ; on the other hand, while decomposing ozone, the hydroxyl groups generated after ozone decomposition are used for secondary sterilization, so that the sterilization and disinfection can be more thorough. At this stage, the ZSM-5/Mn-Ce molecular sieve-supported manganese-cerium active component catalyst with dual functions of ozone elimination and utilization is preferably used, which is more efficient, and does not need to replace the filter screen, saving manpower and material resources.

In the fourth stage, the sterilization and disinfection are completed: when the automatic control induction system 7 detects that the ozone concentration in the indoor air is less than or equal to 0.1 mg/m ³ , the fan 11 is turned off; the absorption of residual ozone in the air by the sterilization and disinfection device is controlled by detecting the ozone concentration Elimination work to ensure maximum elimination of residual ozone in the air to ensure human health.

Obviously, the above-mentioned embodiments of the present invention are only examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. For those of ordinary skill in the art, changes or modifications in other different forms can also be made on the basis of the above description. There is no need and cannot be exhaustive of all implementations here. Any modifications, equivalent replacements and improvements made within the spirit and principle of the present invention shall be included within the protection scope of the claims of the present invention.

Claims (10)

1. A sterilization and disinfection device is characterized by comprising a cabinet body (1), a plurality of ultraviolet lamps (2) which are externally arranged on the cabinet body (1) and can generate at least 10mg of ozone per minute, an air inlet (3) arranged on the cabinet body (1), a first catalytic net (4) arranged on the inner side of the air inlet (3), a fan (11), an air outlet (5) arranged on the cabinet body (1) and communicated to the inner side of the first catalytic net (4), a control panel (6), and an automatic control induction system (7) for controlling the operation of the ultraviolet lamps (2) and the fan (11) through the detection of ozone concentration and the setting of a timing switch, wherein the fan (11), the control panel (6) and the automatic control induction system (7) are all arranged on the cabinet body (1); the automatic control induction system (7) is electrically connected with the control panel (6), and the total power of the ultraviolet lamps (2) is at least 300W.

2. A sterilising and disinfecting device according to claim 1, wherein there are 2-6 uv lamps (2).

3. A sterilization and disinfection apparatus as claimed in claim 1, wherein said plurality of ultraviolet lamps (2) are circumferentially and uniformly arranged outside said cabinet (1).

4. A sterilisation and disinfection apparatus as claimed in claim 1, characterised in that said air outlet (5) is arranged at the top of said cabinet (1), a second catalytic mesh (8) being arranged below said air outlet (5).

5. The sterilization and disinfection apparatus according to claim 4, wherein said first catalytic mesh (4) and said second catalytic mesh (8) are catalytic meshes of ZSM-5/Mn-Ce molecular sieve loaded manganese cerium active component catalyst with dual effects of ozone elimination and utilization.

6. A sterilization and disinfection apparatus as claimed in any one of claims 1 to 5, wherein said air inlet (3) is provided in a plurality of numbers, and is uniformly arranged along the side of said cabinet body (1).

7. A sterilisation and disinfection apparatus as claimed in claim 1, characterised in that said automatic control and induction system (7) comprises an ozone concentration detector (71) arranged outside said cabinet (1) and a timing switch arranged inside said cabinet (1).

8. A sterilising and disinfecting device according to claim 1, characterised in that the cabinet body (1) is provided with a number of universal wheels (9) at its bottom.

9. A sterilisation and disinfection apparatus as claimed in claim 1, characterised in that a shutter (10) is arranged outside said air outlet (5).

10. A sterilization and disinfection method using the sterilization and disinfection apparatus according to any one of claims 1 to 9, comprising the steps of:

1) the ultraviolet lamp (2) is cooperated with the ozone for sterilization and disinfection: turning on the ultraviolet lamp (2), sterilizing and disinfecting the ultraviolet lamp (2) by using ultraviolet rays, generating at least 10mg of ozone per minute, further inactivating viruses by using flowing diffused ozone, and then rapidly increasing the concentration of the ozone;

2) and (3) a high-concentration ozone sterilization and disinfection stage: the automatic control induction system (7) detects the indoor air, and when detecting that the concentration of ozone in the indoor air is more than or equal to 30mg/m³When the ultraviolet lamp (2) is turned on, or 20 minutes after the ultraviolet lamp (2) is turned on, the ultraviolet lamp (2) is turned off, and then the concentration of the ozone is continuously reduced while the ozone is sterilized and disinfected along with the change of time;

3) decomposing residual ozone and performing secondary sterilization and disinfection by utilizing hydroxyl: after the ultraviolet lamp (2) is turned off for 10 minutes, the fan is turned on, and then residual ozone in the air enters the sterilization and disinfection device from the air inlet (3) under the action of the fan and is rapidly catalyzed and decomposed into hydroxyl which is harmless to human bodies and has stronger activity for bacteria and viruses through a catalytic net containing a ZSM-5/Mn-Ce molecular sieve loaded manganese-cerium active component catalyst, so that residual fragments such as the bacteria and the viruses and dormant bodies are further killed;

4) and (3) finishing sterilization and disinfection: the automatic control induction system (7) detects that the concentration of ozone in the indoor air is less than or equal to 0.1mg/m³And (3) closing the fan, wherein the concentration of ozone in the air meets the safety standard, and the whole sterilization process is finished.

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