WO2009124428A1

WO2009124428A1 - A photocatalyst sterilizer with a clo2 sterilizer

Info

Publication number: WO2009124428A1
Application number: PCT/CN2008/002040
Authority: WO
Inventors: 陈红锋
Original assignee: Chen Hongfeng
Priority date: 2008-04-11
Filing date: 2008-12-22
Publication date: 2009-10-15
Also published as: CN101554486A; CN101554486B

Abstract

A photocatalytic sterilizer provided with a ClO₂ sterilizer comprises a casing (1) containing a main body (11), a front mesh enclosure (12) and a back cover (13) with an air outlet (131), a sterilizing room (113), an erect wall (111), an air vent (112), an airflow mixing room (114), a photocatalytic honeycomb (3), a net filter (2), UV lamps (4), a first fan (6) and a ClO₂ sterilizer (7), wherein the sterilizing room is fixed between the front mesh enclosure (12) and the main body (11); the erect wall (111) of the sterilizing room (113) is provided with the air vent (112); the back cover (13) is fixed on the back-upper part of the main body (11); the airflow mixing room (114) is fixed between the back cover (13) and the main body (11); the photocatalytic honeycomb (3) and the net filter (2) are placed in the front mesh enclosure (12); the UV lamps (4) are fixed in the sterilizing room (113); the first fan (6) is fixed in the airflow mixing room (114); and the ClO₂ sterilizer (7) is fixed on the main body (11) under the back cover (13). When it works, the airflow entering the sterilizing room (113) is sterilized by the photocatalyst and UV light, enters the airflow mixing room (114) through the air vent (112), mixes with the ClO₂ which is produced by the ClO₂ sterilizer (7), and exhausts from the air outlet (131) on the back cover (13).

Description

Photocatalyst sterilization machine with chlorine dioxide sterilizer

The present invention relates to an air disinfecting and purifying machine, and more particularly to a photocatalyst sterilizing and disinfecting machine having a chlorine dioxide sterilizer.

Background technique

Nano-sized titanium dioxide (Ti0 ₂ ) is the most dynamic research field in new material research in recent years. This ultra-fine particle has large specific surface area, high surface activity and good photocatalytic properties. It has both metal and non-metal. Specific energy. A large amount of research data shows that nano Ti0 ₂ is useful for killing bacterial viruses and eliminating odors, and it is very effective for controlling bacteria and mildew and controlling odor. Because of its high photocatalytic properties, it is especially effective as a highly effective purifying action and antibacterial, antiseptic, deodorizing and optimising environment. The use of low-measurement ultraviolet light to illuminate nano-titanium dioxide produces a so-called photocatalytic effect, and both react to form highly active hydroxyl radicals, which rapidly decompose organic poisons into carbon dioxide and water. It has been proved by experiments that the main purification principle of nanometer titanium dioxide is as follows: It is a low temperature deep reaction technology. The photocatalyst nanoparticles are excited to generate electron-hole pairs under the irradiation of light of a certain wavelength, and the hole decomposition catalyst The water adsorbed on the surface generates hydrogen-oxygen radicals, and the electrons reduce the oxygen around them to active ionized oxygen, thereby having a strong 'oxidation-reduction effect, destroying various pollutants on the surface of the photocatalyst, thereby achieving purification purposes. fresh air.

Various photocatalyst air purifiers have been fabricated using the photocatalytic properties of nano Ti0 ₂ , such as the Chinese utility model patent photocatalyst air disinfection machine with application number 03238375.4, and the Chinese utility model patent photocatalyst ultraviolet air purification and disinfection application number 03259495.X machine. This kind of air purifier does not need to use disinfectant, and the use cost is low, but it only purifies the air entering the machine cavity, and can not completely kill the bacteria and virus in the air, and can not replace the traditional spray disinfectant for sterilization. .

Chlorine Dioxide (C10 ₂ ) is an environmentally-friendly disinfectant for bactericidal and bactericidal viruses widely used in the medical and health industry in recent years. It is a highly effective and low-toxic disinfectant that can kill all microorganisms, including bacterial propagules and bacterial spores. , fungi, mycobacteria, viruses, etc., and the use of less, fast, long-lasting efficacy, and does not produce carcinogenic halogenated hydrocarbon compounds such as dichlorosilane, trichloromethane, etc. The World Health Organization (WHO) and the World Food and Agriculture Organization (FAO) have recommended to the world AI-grade high-efficiency safe disinfectants, and are the most ideal replacement for internationally recognized chlorine-based disinfectants. Chlorine dioxide can rapidly oxidize sulfides (such as H ₂ S, etc.) into sulfate ions, remove the odor generated by the ««, oxidize and degrade CN -, N0 ² -, NH ³ into Non-toxic substances such as C0 ₂ and N ₂ . It can be seen that chlorine dioxide not only has a good sterilization effect, but also has many functions such as anti-mite and deodorization. It can be widely used in public places, air, refrigerators, cold storage, offices, dormitories, cars and Air disinfection and deodorization of air conditioning ventilation systems can also be used for sterilization of patients' homes, wards and patient items.

At present, the method of disinfecting air by using chlorine dioxide is to spray a prepared chlorine dioxide solution into a space to be disinfected by a sprayer or an aerosol sprayer, and the method can spray the liquid to any place in the space to be disinfected. , including corners blocked by furniture and other items, will not leave dead spots that cannot be disinfected, but the sprayed liquid contains acid and alkali metal salt ions, which will corrode metal parts of electrical equipment. Summary of the invention

The technical problem to be solved by the invention is to provide a photocatalyst sterilization and disinfecting machine with a chlorine dioxide sterilizer, which can replace the traditional spray disinfectant to sterilize the air, can meet the hygiene sterilization requirements, and is disinfected. It will not cause damage to the items in the disinfection space, will not leave a disinfection dead angle, and is easy to use. The machine is used for daily air purification without the use of disinfectant and other consumables, and the use cost is low.

The photocatalyst sterilization and disinfecting machine with chlorine dioxide sterilizer of the invention comprises:

The chassis comprises a main body, a front grille and a rear cover with an air outlet. The front grille is mounted on the front lower part of the main body, and a sterilization chamber is arranged between the front grille and the main body, and a vent opening is formed on the vertical wall of the sterilization chamber, and the rear cover is provided. Installed in the rear upper part of the main body, between the back cover and the main body is a gas flow mixing chamber;

a photocatalyst honeycomb body, the photocatalyst honeycomb body is installed in the front net cover, and a filter net is installed between the photocatalyst honeycomb body and the front net cover;

a plurality of ultraviolet lamps, which are installed on a vertical wall of the sterilization chamber of the chassis;

a first fan, the first fan being installed in an airflow mixing chamber of the chassis;

a chlorine dioxide sterilizer, the chlorine dioxide sterilizer is located at a lower side of the back cover, and is connected to the main body through a hinge; during operation, the airflow entering the sterilization chamber is sterilized by the photocatalyst and the ultraviolet ray, and enters the airflow mixing chamber through the vent Then, it is mixed with the chlorine dioxide gas generated by the chlorine dioxide sterilizer and discharged from the air outlet on the back cover.

Further, the chlorine dioxide sterilizer comprises a casing, a liquid storage chamber is arranged inside the casing, an aeration head is arranged on the bottom surface of the liquid storage chamber, and an air pump is arranged under the bottom surface of the liquid storage chamber, and the air outlet of the air pump passes through the one-way valve and the aeration Head connection.

Further, a second fan may be included, and the second fan is installed at a vent on the wall of the sterilization chamber to speed up the air purification.

Nano titanium dioxide coating can also be applied on the surface of the sterilization chamber to achieve better purification effect. The invention has the following beneficial effects:

Compared with the air disinfection by spraying a chlorine dioxide solution with a sprayer, the present invention converts the chlorine dioxide molecules in the chlorine dioxide solution from the aqueous phase to the gas phase into the air for sterilization, and only oxidizes the chlorine dioxide. The chlorine molecules are escaping into the air, and most of the acid and basic metal salt ions in the solution remain in the solution and do not come into contact with the contents of the disinfection space, thus avoiding the spraying of chlorine dioxide solution. The acid and alkali metal salt ions corrode the electrical components, which can effectively avoid damage to the objects in the disinfection space.

It can quickly dissipate the chlorine dioxide molecules in the chlorine dioxide solution into the air and reach the specified disinfection concentration within the specified time, so it can fully meet the hygiene sterilization requirements. Moreover, since the chlorine dioxide molecules can escape into all corners, they can be thoroughly disinfected without leaving dead spots that cannot be disinfected.

It can replace the traditional spray disinfectant to sterilize the air, and can be used for daily air purification. It does not need to use disinfectant and other consumables when purifying the air, and the use cost is low.

The machine is simple and convenient to use, and the cost is low. It is only necessary to put a prescribed amount of chlorine dioxide solution into the liquid storage chamber according to the size of the space to be disinfected, and the disinfection time can be automatically set up by turning on the power supply to prevent airborneness. The most economical and most suitable disinfection and purification equipment for diseases such as SARS, influenza, avian flu, tuberculosis, and ward operating room can be widely used in public places such as homes, hospitals, offices, production workshops, etc., as well as vehicles, airplanes, etc. .

DRAWINGS

1 is a front perspective view of a photocatalyst sterilization and disinfecting machine having a chlorine dioxide sterilizer according to an embodiment; FIG. 2 is a rear perspective view thereof;

Figure 3 is a schematic diagram of its internal structure;

Figure 4 is a schematic view of the structure after the chlorine dioxide sterilizer is pulled outward;

Figure 5 is a schematic view of the structure after removing the back cover and the chlorine dioxide sterilizer;

Figure 6 is a schematic view showing the structure of a chlorine dioxide sterilizer;

Figure 7 is a front perspective view of the main body of the chassis.

detailed description

Referring to Figures 1-7, the photocatalyst sterilization machine having a chlorine dioxide sterilizer includes:

The chassis 1 includes a main body 11, a front grille 12, and a rear cover 13 with an air outlet 131. The front grille I ^{2 is} fastened to the front lower portion of the main body 11, and the front grille 12 is also magnetically mounted. The front part of the main body 11 is a sterilization chamber 113 between the front grille 12 and the main body 11, and a vent 112 is formed in the vertical wall 111 in the sterilization chamber 113. The rear cover 13 is mounted on the rear upper portion of the main body 11, and the rear cover 13 and the main body 11 are provided. Between the air flow mixing chamber 114;

Photocatalyst honeycomb body 3, the photocatalyst honeycomb body 3 is installed in the front mesh cover 12, and the filter net 2 is installed between the photocatalyst honeycomb body 3 and the front mesh cover 12; a plurality of ultraviolet lamps 4, the ultraviolet lamps 4 in the machine are UV LEDs, which are mounted on the vertical wall 111 in the sterilization chamber 113 of the cabinet 1;

a first fan 6, the first fan 6 is mounted in the airflow mixing chamber 114 of the chassis 1; and a chlorine dioxide sterilizer 7, the chlorine dioxide sterilizer 7 is located at the lower side of the rear cover 13, and is hinged with the main body 11 (connected by the hinge shaft 73 and the sleeve 73), a magnetic device is arranged between the chlorine dioxide sterilizer 7 and the main body 11 to lock the two together, and the chlorine dioxide sterilizer 7 is pulled outward by hand. Rotating the chlorine dioxide sterilizer 7 around the hinge shaft of the hinge to separate from the main body 11 to facilitate the addition of the chlorine dioxide disinfecting solution;

During operation, the airflow entering the sterilization chamber 113 is sterilized by the photocatalyst and ultraviolet rays, enters the airflow mixing chamber 114 through the vent 112, and is mixed with the chlorine dioxide gas generated by the chlorine dioxide sterilizer 7, from the rear cover 13. The air outlet 131 is discharged.

According to the disinfection routine of the health department, the chlorine dioxide molecules in the air need to reach a certain concentration to have a disinfecting effect. However, the concentration and time of chlorine dioxide molecules naturally escaping from the chlorine dioxide solution are difficult to control, and the prescribed disinfection cannot be guaranteed. The concentration, and thus the natural escape will greatly reduce the disinfection effect, and it is difficult to ensure the disinfection effect. Therefore, the present invention adopts the following special structure chlorine dioxide sterilizer 7, which comprises a casing 71, and a liquid storage chamber 72 is arranged in the casing 71. An aeration head 77 is attached to the bottom surface of the liquid storage chamber 72. An air pump 74 is disposed under the bottom surface of the liquid storage chamber 72. The air outlet of the air pump 74 is connected to the aeration head 77 through a check valve 75. During operation, the air pump 74 generates compressed air and sends it to the aeration strip 77, and the aeration strip 77 aerates, so that the chlorine dioxide molecules in the chlorine dioxide solution in the liquid storage chamber 72 are rapidly transferred from the aqueous phase to the gas phase, and rapidly Escapes to the airflow mixing chamber 114. The one-way valve 75 serves to prevent the solution in the reservoir 72 from flowing back into the air pump 74.

The outer casing 71 and the liquid storage chamber 72 of the chlorine dioxide sterilizer 7 are integrally formed by injection molding, and the liquid storage chamber 72 has an ingot shape in cross section, so that the chlorine dioxide sterilizer 7 and the main body 11 of the casing are sucked together. There is space for air to flow through, and the inner wall of the liquid storage chamber 72 has a scale indicating the volume of the contents. When the chlorine dioxide sterilizer 7 is pulled outward, the scale can be seen, which is convenient for the user to measure the amount of the disinfectant. The reservoir 72 can also be designed in the shape of a crescent or other shape.

The aeration head 77 employs a long microporous aeration head with three ports, and a one-way valve 75 is connected to the three ports of the microporous aeration head 77 through a four-way tube member 76.

In order to speed up the air purification and disinfection, a second fan 5 is installed at the vent 112 on the vertical wall 111 in the sterilization chamber 113.

In order to achieve a better purification effect, the inner surface of the sterilization chamber 113 is coated with a nano titanium dioxide coating 113. Further, a nano-titanium dioxide layer may be disposed on the surface of the filter 2 to form a photocatalyst filter, and a plurality of ultraviolet lamps are disposed on the four vertical walls in the sterilization chamber 113 to more fully illuminate the filter 2, the photocatalyst honeycomb body 3, and the sterilization. Nano titanium dioxide on the inner surface of the chamber 113. The rear cover 13 is provided with a concave handle 132, and the user can carry the sterilization machine through the concave handle 132. The main body 11 is provided with a power switch 8, a timing device 9 for controlling the working time of the chlorine dioxide sterilizer 7, and a timing device 10 for controlling the operating time of the ultraviolet lamp 4. In the embodiment, the timing device adopts a mechanical timer, and an electronic timing device realized by a single chip microcomputer can also be used. In Fig. 5, 115 is a power socket for connecting to an external power source to supply power to the unit.

Further, a chlorine dioxide concentration sensor may be installed in the air inlet grid of the front grille 12 and its output is connected to the control center of the machine (such as the above-mentioned single chip microcomputer), and the chlorine dioxide concentration in the room is detected by the chlorine dioxide concentration sensor. Then, compared with the preset concentration value, when the set upper limit concentration is exceeded, the aeration head 77 of the chlorine dioxide sterilizer 7 is stopped from aeration, and when the indoor chlorine dioxide concentration is lower than the set lower limit concentration, The aeration head 77 of the chlorine chlorinator 7 restarts aeration to form a feedback system, and the machine automatically maintains the chlorine dioxide concentration in the space within a set range, and the automatic control method can accurately control the space. Chlorine dioxide concentration for better disinfection. The concentration setting can be done with the buttons on the chassis. The photocatalyst sterilization machine with chlorine dioxide sterilizer includes two functional parts: a molecular air disinfection part and a photocatalyst air purification part. They can work simultaneously or separately. The specific instructions are as follows:

When disinfecting with the machine, the power switch 8 is turned on, and the timing device 9 is set. The air pump 74 generates compressed air to aerate the aeration strip 77, so that the chlorine dioxide molecules in the chlorine dioxide solution in the liquid storage chamber 72 are rapidly The water phase state is transferred to the gas phase state, and quickly escapes from the air outlet 131 on the rear cover 13 to the sealed space to be disinfected through the airflow mixing chamber 114, so that the sterilization concentration is reached within a prescribed time (5-10 minutes), and continues Required sealed disinfection time. Due to the rapid diffusion and non-pervasive diffusion of chlorine dioxide molecules, a highly efficient air disinfection effect is achieved. Depending on the size of the space to be disinfected, the concentration of the chlorine dioxide solution and the amount of the solution can be adjusted to meet the hygiene requirements. The first fan 6 is used to accelerate the escape of the chlorine dioxide molecules in the vaporized state to the space to be sterilized.

When the air is cleaned by the machine, the power switch 8 is turned on, and the timing device 10 is set. The second fan 5 draws air from the front grille 12 into the sterilization chamber 113, and large suspended particles such as pollen and dust in the air are adsorbed by the filter net 2. Blocked, smaller microorganisms, such as bacteria and viruses, are adhered in the photocatalyst honeycomb body 3, and the UV LED in the sterilization chamber 113 emits 365 nm ultraviolet light to illuminate the photocatalyst honeycomb body 3 and the nano titanium dioxide layer on the inner wall of the sterilization chamber 113, resulting in The OH group can kill bacteria, virus and eliminate odor purifying air, purify the dirty air into fresh air of high oxygen content, and enter the airflow mixing chamber 114 through the vent 112, and the air outlet 131 from the back cover 13 discharge. It can fully meet the daily purification and disinfection of indoor air. When the air is purified and disinfected by the machine, the power switch 8 is turned on, the timing devices 9 and 10 are set, the purification and disinfection functions are simultaneously turned on, and the air entering the sterilization chamber 113 is filtered through the filter screen, sterilized by the photocatalyst and ultraviolet rays, The airflow mixing chamber 114 enters the airflow mixing chamber 114, is mixed with the chlorine dioxide gas generated by the chlorine dioxide sterilizer 7, and is discharged from the air outlet 131 on the rear cover 13.

The following are some specific application examples for disinfecting with the disinfection machine of the present invention:

1. It is used for terminal disinfection of air in hospital wards or air terminal disinfection in infectious wards.

Use chlorine dioxide disinfectant stock solution 2000mg/L, Iml/M ³ (equivalent to 3ml/M ² , height of each layer

2.6-3.0M), such as 25M ² house, pour 75ml disinfectant solution into the liquid storage chamber 72, add clean water, reach the specified waterline scale position, when disinfecting, close the door and window, time 15 minutes, open after 30 minutes The doors and windows are ventilated. Air disinfection requirements that fully meet hygiene standards.

2, family preventive air disinfection (killing influenza virus, influenza virus, etc.).

Use chlorine dioxide disinfectant stock solution 2000mg / L, lm! / M ³ (equivalent to 3ml / M ² , height per layer

2.6-3.0M), such as 100M ^{2 for} housing, pour 300ml disinfectant solution into the liquid storage chamber 72, add clean water, reach the specified waterline scale position, when disinfecting, close the door and window, time 15 minutes, open after 30 minutes The doors and windows are ventilated. Fully meet the hygiene air disinfection standards.

3. Dynamic air disinfection in food production workshops.

Use chlorine dioxide disinfectant stock solution 2000mg / L, lml / M ³ (equivalent to 3ml / M ² , height of each layer

2.6-3.0M), for 200M ² house, pour 600ml disinfectant solution into the liquid storage chamber 72, add clean water in the production gap (noon or night stop), reach the specified waterline scale position, close the door and window, timing 15 Minutes, after 30 minutes, open the doors and windows to ventilate. Complete air disinfection requirements for food production standards. In order to maintain the dynamic air purification function during production, the power switch 8 and the timing device 10 are turned on every day during the working hours. Add disinfectant after no work, turn on the power switch 8 and the timing device 9 to do molecular air disinfection.

The photocatalyst sterilization and disinfection machine with chlorine dioxide sterilizer of the invention can be designed into different models to be suitable for disinfection in different places, such as a model suitable for household (20M ² -200M ² ), used in a production workshop.

(60M ³ -600M ³ ) models, as well as models suitable for car compartment sterilization.

Claims

Claim

A photocatalyst sterilization machine with a chlorine dioxide sterilizer, comprising: a chassis, the chassis comprising a main body, a front grille and a rear cover with an air outlet, the front grille being mounted on the front lower part of the main body, the front net Between the cover and the main body is a sterilization chamber, a vent opening is formed on the vertical wall of the sterilization chamber, the rear cover is installed at the rear upper part of the main body, and an air flow mixing chamber is arranged between the rear cover and the main body;

2. A photocatalyst sterilization machine with a chlorine dioxide sterilizer according to claim 1, wherein: said chlorine dioxide sterilizer comprises a casing, a liquid storage chamber is arranged in the casing, and an aeration head is arranged on the bottom surface of the liquid storage chamber. An air pump is arranged under the bottom surface of the liquid storage chamber, and an air outlet of the air pump is connected to the aeration head through a one-way valve.

3. A photocatalyst sterilization machine with a chlorine dioxide sterilizer according to claim 2, wherein: the outer casing and the liquid storage chamber of the chlorine dioxide sterilizer are integrally formed by injection molding, and the cross section of the liquid storage chamber is Ingot shape.

A photocatalyst sterilization and disinfecting machine with a chlorine dioxide sterilizer according to claim 2, wherein: said aeration head is an elongated microporous aeration head, and three interfaces are provided, and the one-way valve passes through A four-way pipe is connected to the three ports of the microporous aeration head.

A photocatalyst sterilization machine having a chlorine dioxide sterilizer according to claim 1 or 2, further comprising a second fan installed at a vent of the wall of the sterilization chamber.

A photocatalyst sterilization machine having a chlorine dioxide sterilizer according to claim 1 or 2, wherein: the surface of said sterilization chamber is coated with a nano titanium dioxide coating.

A photocatalyst sterilization machine with a chlorine dioxide sterilizer according to claim 1 or 2, wherein: the back cover is provided with a concave handle.

A photocatalyst sterilization machine having a chlorine dioxide sterilizer according to claim 1 or 2, further comprising: timing means for controlling the working time of said chlorine dioxide sterilizer and said ultraviolet lamp.

A photocatalyst sterilization machine having a chlorine dioxide sterilizer according to claim 1 or 2, wherein the ultraviolet lamp is a UV LED.