JPH06214A - Indoor air disinfecting method - Google Patents

Abstract

PURPOSE:To disinfect rooms quickly and effectively at one time regardless of how many rooms exist to every corner of each room by allowing an air filter of an air-conditioner to hold a liquid state disinfectant, turning on the air-conditioner, and permitting the air in the rooms to pass through the air filter. CONSTITUTION:The outside air introduced to an air-conditioner 1 in the central system passes through an air preheater or precooler 2, air filter 3, air cooler 4, air heater 5, and air humidifier 13 to be fed into a plurality of rooms 7 by a blower 6 from respective blowout holes 8. Therein a glass fiber non-woven cloth 15 impregnated with a disinfectant such as 10% hydrogen peroxide is fixed to the air filter 3, and the air is disinfected by the hydrogen peroxide at passage of the filter 3 during the cycle that the air in the rooms is circulated back to the air-conditioner 1 via returns 9. The air disinfected is allowed to blow off into the rooms to disinfect of the rooms to every corner.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention can efficiently disinfect indoor air in buildings, aircraft, ships and the like in an extremely short time, and has no problem even when there are people in a room such as a hospital or hotel. The present invention relates to a method of disinfecting indoor air that can be sterilized.

[0002]

2. Description of the Related Art Conventionally, indoors such as buildings, airplanes, and ships are often contaminated with harmful microorganisms such as viruses and bacteria. Therefore, in order to maintain good hygiene in these rooms, disinfection is performed with chemicals. It was However, the conventional disinfection method has the main purpose of exterminating harmful small insects, and since the chemical solution is atomized by a power sprayer or a human power sprayer and is sprayed indoors, It is difficult to spray evenly, and it is difficult to obtain the effect especially for disinfecting things such as shadows and pits, and in buildings with many rooms, disinfection for each room is very troublesome.
Since many chemicals are highly toxic, there is a risk that workers will be contaminated with the chemicals and their health will be impaired. Not only that, but this method also has the problem that the chemical drops as drops of water on the floor, discoloring the P tiles, baking the carpet, etc. In the case of a computer room, the chemicals become drops of water and the computer May cause computer failure.
This method has a problem that the computer room cannot be disinfected.

Conventionally, harmful microorganisms such as viruses and bacteria have not been disinfected so much, and disinfection with a substance that does not cause water droplets to fall has not been done so much. Even if the room is sterilized, many germs propagate in the air conditioner, and since they enter the room, the effect of sterilization does not increase so much. However, conventionally, sterilization of the inside of the air conditioner has not been performed at all, and such an idea has not been known at all. Furthermore, the sterilization of rooms such as hospitals and hotels where people are always present has not been performed at all because the drug used for sterilization is highly toxic to the human body.

[0004]

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and sterilizes the interiors of buildings, airplanes, ships, etc., and can also be used in hotels, hospitals, and other rooms where people are present. It is an object of the present invention to provide a disinfection method that can be sterilized and that does not pollute the room even after sterilization.

[0005]

Means for Solving the Problems As a result of earnest studies for achieving the above-mentioned object, the present inventor has found that bacteria in the air have a property of adhering to liquid substances such as water, and buildings, aircraft and ships. Focusing on the fact that an air conditioner is installed in the room, we thought about using this air conditioner to disinfect the room, and let the air filter of the air conditioner hold a liquid germicide to keep the indoor air out. By passing through this air filter, it is possible to effectively disinfect the room in an extremely short time, and since the inside of the air conditioner is also sterilized at the same time, it was found that the room is less likely to be contaminated even after sterilization, and the present invention has been reached. . That is, the present invention is characterized in that a liquid sterilizing agent is held in an air filter of an air conditioner, the air conditioner is operated, and the air in the room passes through the air filter.

As the liquid disinfectant used in the present invention, an aqueous disinfectant solution, a disinfectant which is liquid at room temperature, a disinfectant solution or a dispersion can be used. As the bactericide aqueous solution, for example, hydrogen peroxide solution or sodium hypochlorite aqueous solution can be used. As the germicide that is liquid at room temperature, it is preferable to use a germicide having a relatively high boiling point because it can be used for a long time without volatilizing. Also,
As a germicide that is liquid at room temperature, it is preferable to use a germicide that can be mixed with water, and by mixing water with a germicide with a high boiling point, it can be used for a long time, and the germicidal rate of germs Can be improved. Even a solid germicide can be dissolved or dispersed in a liquid such as water before use.

In order to hold the liquid germicide in the air filter of the air conditioner, the liquid germicide may be held directly in the air filter, or the liquid germicide may be held in an appropriate air filter medium and the liquid filter is held in the air filter. You may fix it to. As the filter medium for air, for example, fibrous activated carbon, cloth, glass fiber, asbestos fiber or the like can be used. It is particularly preferable to use a synthetic resin having a strong water retaining property as the air filter medium, in the case of a sterilizing agent using water as a solvent, since the liquid sterilizing agent can be retained for a long time while maintaining the liquid state. The type of air conditioner used in the present invention is not particularly limited, but in the case of a central type air conditioner, the effect of the present invention is particularly exerted. This is because a central air conditioner can simultaneously disinfect many rooms at the same time.

[0008]

The disinfection method of the present invention will now be described with reference to the drawings. The figure is a schematic diagram when a central type air conditioner is used. When the outside air is introduced into the air conditioner 1, it passes through the air preheater or air precooler 2, the air filter 3, the air cooler 4, the air heater 5, and the air humidifier 13, and is blown by the blower 6 into each room. Air is introduced into the room 7 from the air outlet 8. The introduced air can be exhausted from the return 9, or the return 9 can be closed and sucked from the air outlet 8 to circulate between the air conditioner and the room, or can be exhausted as it is. In the figure, 10 is a room thermostat, 11 is a cold water pump, and 12 is a hot water pump.

The air filter 3 contains 1 as a bactericide.
The glass fiber nonwoven fabric 15 impregnated with 0% hydrogen peroxide solution is fixed. Using the device configured as described above, 120 rooms in 8 buildings and a room in the building with a total area of 8000 m ²
Return the indoor air from the return 9 into the air conditioner 1 and
The inside and the air conditioner 1 were circulated once in 7 to 10 minutes, and the air conditioner was operated for 2 hours. In addition, glass fiber nonwoven fabric 15
Was sprayed with 10% hydrogen peroxide every 20 minutes.
As a result of the above experiment, it was confirmed that the inside of the room 7 and the inside of the air conditioner 1 were sterilized by 70%. In addition, the duct in the air conditioner is
The air behind the ceiling of the building is also sucked in, and the air behind the ceiling also passes through the air filter, so the air behind the ceiling also circulates and passes through the air filter, so the air behind the ceiling is also sterilized.

The liquid disinfectant may be directly supplied to the filter medium by a sprayer, but it may be sprayed automatically or, depending on the position of the humidifier 13, sprayed from the humidifier. You can also When a liquid sterilizing agent having a low volatility is used, once the sterilizing agent is held in the air filter directly or through the filter medium, it is not necessary to further spray the sterilizing agent. In the figure, 16 is a control valve for sending cold air from the refrigerator to the air cooler 4, and 17 is a control valve for sending hot air from the boiler to the air heater 5, which is controlled by a computer. It is designed to open and close automatically. The method of the present invention can be applied to sterilization of vehicles such as trains as well as buildings, ships and aircraft. In short, any room may be used as long as the air of the air conditioner circulates.

[0011]

As described above, according to the present invention, a normal air filter for an air conditioner is used, and the liquid filter is held in the air filter to disinfect the room. Therefore, it is possible to effectively disinfect all corners of the room at the same time in an extremely short time, and it is possible to significantly reduce the cost of disinfecting the room, and to dispose of the inside of the air conditioner and the attic, which has never been disinfected before. Since it can also be disinfected, indoor re-contamination due to bacteria etc. in the air conditioner is prevented, so it is possible to always keep the room low in bacteria, etc. Have. Further, according to the method of the present invention, since the disinfectant can hardly exist in the room, it can be disinfected without any trouble even when there are people in the room. Effective for disinfection.

[0012]

[Brief description of drawings]

FIG. 1 is a schematic diagram for explaining the method of the present invention.

[Explanation of symbols]

 1 Air conditioner 3 Air filter 15 Glass fiber non-woven fabric containing bactericide

Claims (4)

[Claims] 1. Indoor air of a building, an aircraft, a ship, etc., characterized in that an air filter of an air conditioner holds a liquid disinfectant, and the air conditioner is operated to allow indoor air to pass through the air filter. Disinfection method. 2. The disinfecting method according to claim 1, wherein the air filter of the air conditioner holds a filter medium holding a liquid germicide. 3. The building is a hospital or a hotel.
The disinfection method described in. 4. The disinfection method according to claim 1, wherein the air conditioner is a central type air conditioner.