KR20220090632A - Humidity controlled air sterilizer and disinfection spray system for virus and bacterial extinction - Google Patents

Abstract

The present invention relates to a humidity control air sterilizer and disinfection spray device for killing viruses and bacteria. According to the present invention, the air containing environmental pollutants, fine dust, microorganisms, etc. is supplied to the intake unit 110; The air purification filter (F1), the moisture filter (F2), and the microbial sterilization filter (F3) supplied with the disinfectant solution from the disinfectant storage tank 130 are sterilized, and the sterilized air and the evaporating disinfectant solution are mixed to form a low pressure flow path. It is discharged to the exhaust unit 210 through the space disinfection. In addition, for supplemental space disinfection, a disinfectant sprayer 200 comprising a disinfectant storage tank, a water pump 120, and an orifice nozzle 230 is provided, and an air sterilization and disinfection spray system are provided at the same time. Control the rotation speed of the ultrasonic humidifier vibrator 140 that controls the amount of the disinfectant evaporated and sprayed, the water pump, and the intake/exhaust fan provided with two temperature sensors (T1, T2) to maintain proper humidity in which the growth rate of microorganisms is suppressed This enhances the air sterilization effect. In addition, if water, not disinfectant, is used in the disinfectant storage tank, the growth rate of microorganisms is suppressed by the same algorithm, and it can be used as a humidifier and dehumidifier controlled to an appropriate humidity. In addition, if the disinfectant storage tank is divided into two and the disinfectant solution and water are supplied respectively, disinfection, humidification and dehumidification functions are also provided.

Description

Humidity controlled air sterilizer and disinfection spray system for virus and bacterial extinction

The present invention relates to a humidity-controlled air sterilizer and disinfection spray device for killing viruses and bacteria, and more particularly, to suppress the growth rate of microorganisms by using a temperature sensor, a dry and wet bulb hygrometer table, and an appropriate temperature and humidity table in an evaporative cooling method. It is characterized in that the humidity is controlled and the air is sterilized by forming a disinfectant curtain on the microorganism sterilization filter (F3). In addition, it is connected to the main body with a hose to provide a spray function that increases the sterilization effect and accessibility of the disinfection space.

1 shows a prior art evaporative air cooler. An evaporative cooler (wet air cooler) is a device that cools air through evaporation of water. As shown in Figure 1, evaporative cooling is a method in which water from the water tank is supplied to the cooling pad by a water pump for evaporation, and the hot air that is drawn in lowers the surrounding temperature by the heat of vaporization while the water contained in the cooling pad evaporates. The temperature of the dry air may drop considerably as the liquid water phase changes to water vapor in the cooling pad of FIG. 1 . This allows the air to be cooled with much less energy than cooling. In extremely dry climates, evaporative air cooling offers the advantage of giving more moisture. Evaporative cooling capacity depends on the difference in dry-humidity temperature difference, which is the difference between dry- bulb temperature and wet -bulb temperature (see Relative Humidity document). In climates not considered dry, indirect evaporative cooling is the process of evaporative cooling without increasing humidity. It has the advantage of being able to take Air sterilization refers to air purification and sterilization of air. In recent years, air purifiers are being used with a HEPA filter (High Efficiency Particulate Air) made of a well-known special electrified fiber that filters out even minute harmful substances and polluting dust. The HEPA filter plays a role in filtering out harmful substances such as dust, mites, viruses, mold, etc. that are harmful to the human body and fine dust most harmful to the human body because it is contained in the air with strong adsorption power. 10-2012-0016525 is there. However, the currently used fine dust HEPA filter is a filtering method based on micrometer-sized fibers and is the most widely used due to its excellent fine dust collection efficiency. However, in the air purification method using a HEPA filter, microorganisms remaining in the filter have a long survival period and may not be completely sterilized, and may spread into the air through the exhaust cycle. In addition, the price of the HEPA filter is relatively expensive, and the pressure loss is high, so the power consumption of the blower required to purify the air is large, and noise and vibration are generated. Sterilization and disinfection of air includes a method of using high-pressure steam, a method of sterilizing using a high potential such as plasma, and a method of spraying an aqueous disinfection solution. The method using high-pressure steam has a cycle of water supply -heating-sterilization -exhaust, the system is complex and the scale of the device is large. A high-potential device using plasma requires a photocatalyst to eliminate ozone generation during discharge, and there is a risk of electric shock or the like for high voltage. The method of spraying the disinfecting solution is effective for surface disinfection by spraying the disinfecting solution through a simple disinfection misting device in the air passage, but it is difficult to sterilize microscopic viruses or bacteria in the air.

The present invention is to solve the above problems, and prevents microorganisms surviving in the filter of the air purifier from propagating during exhaust with the disinfectant curtain function of the microbial sterilization filter, and the evaporating disinfectant is combined with the sterilized air to close the exhaust port. The purpose is to provide a space disinfection function with appropriate humidity while dissipating through the air. In addition, the disinfection spray system provided with the water pump 120, the valve 2 (sol2), and the orifice nozzle 230 aims to provide surface disinfection by supplementing the air sterilization function.

The present invention relates to a humidity control air sterilizer and disinfection spray device for killing viruses and bacteria, comprising: an intake unit (100); air purification filter (F1); moisture filter (F2); Microbial sterilization filter (F3); water pump 120; Ultrasonic humidifier vibrator 140; Ultrasonic mist venturi tube 150; Disinfectant storage tank 130; low pressure forming flow path; valves (Sol1, Sol2); exhaust 150; temperature sensors (T1, T2); A control unit 300 is provided to sterilize the air at an appropriate humidity at an inert temperature for microorganisms. In addition, in order to increase the disinfection effect and accessibility of the disinfection space, a spray module including a water pump, a disinfectant storage tank, an orifice nozzle, and a hose connection detection device provides a disinfection spray function. It is characterized in that it comprises a moisture filter and a sprayer capable of directly performing disinfection spraying as a supplement, controlling the evaporation amount of a moisture filter and disinfectant solution to maintain proper humidity at which microbial growth is suppressed. To provide optimum humidity for each temperature, the amount of evaporation of the disinfectant is controlled according to the ultrasonic humidifier vibrator and the water pump according to various sensors, and the air sterilization and surface disinfection are performed automatically by mixing the sterilized air and the disinfecting solution that evaporates and discharging it into the space. characterized by being

The present invention has an effect of providing air sterilization and surface sterilization at the same time. The polluted air sucked into the intake in the above room is first filtered through an air filtration filter to filter fine dust, viruses, and bacteria, and then passes through a moisture filter for moisture control and a microbial sterilization filter containing a sterilizing agent to remove viruses or bacteria. Sterilize tea. It sterilizes the virus or bacteria remaining in the space by mixing the sterilizing ingredients in the humidity-controlled and sterilized air and exhausting it. It is possible to enhance the overall sterilization effect by providing a complementary direct disinfection spray function and controlling the humidity to an appropriate humidity that inhibits the growth of microorganisms. In addition, if water, not disinfectant, is used in the disinfectant storage tank, the growth rate of microorganisms is suppressed by the same algorithm, and it can be used as a humidifier and dehumidifier that adjusts to an appropriate humidity. In addition, if the disinfectant storage tank is divided into two and supplies disinfectant and water respectively, disinfection, humidification, and dehumidification functions are also provided.

- Fig. 1. Conventional Evaporative Air Cooler
- Figure 2 is an embodiment of the air sterilization and disinfection sprayer of the present invention
- Figure 3 is a humidity condition for inhibiting the growth rate of microorganisms
- Fig. 4. Appropriate humidity table for each temperature that inhibits the growth of microorganisms
- Fig. 5 wet bulb hygrometer and humidity table
- Fig. 6. Air sterilization and atomizer control algorithm to maintain proper humidity
- Fig. 7 Another embodiment of the air sterilization device of the present invention

An embodiment of the present invention is disclosed in FIG.

intake unit 100; air purification filter (F1); moisture filter (F2); Microbial sterilization filter (F3); Ultrasonic humidifier vibrator 140; Ultrasonic mist venturi tube 150; Disinfectant storage tank 130; water pump 120; low pressure forming flow path; valves (Sol1, Sol2); atomizer 200; temperature sensors (T1, T2); exhaust 150; hose connection detection (220); Includes controls. The air purification filter F1 may include a pre-filter, an activated carbon filter, a HEPA filter, and the like, and primarily functions to filter contaminated air containing bacteria as an air filter filter. The filler constituting the air purification filter may be provided in various ways regardless of the material. The moisture filter F2 is provided to control the humidity so that the growth of microorganisms is suppressed according to the graph of relative humidity and growth rate of FIG. 3 . The adsorbent (solid) constituting the moisture filter (F2) has a large specific surface area and affinity, is porous, and as the number of capillaries increases, the interface of the solid required for adsorption increases. The adsorbent constituting the moisture filter is composed of activated carbon, alumina, silica gel, or a polymer absorbent. The characteristics of each material are as follows.

1) Activated carbon

-　Products obtained by high-level activation using materials containing carbon (carbides such as wood, palm lining, lignite, and bituminous coal) as raw materials

- Odor removal, gas purification, solvent recovery, toxic component removal, automatic humidity control function

2)Alumina

- Adsorbs water and organic matter well. moisture dry

3) Silica gel

- Absorbs water and organic matter well below 250 degrees. moisture dry

4) Polymer absorber

- Absorbent material used for diapers, etc., a material composed of a porous body for adsorbing water and moisture

In the microorganism sterilization filter F3, a water film of disinfectant solution is generated in the filter, and the microorganisms introduced into the filter are directly sterilized. The microbial sterilization filter has the same shape as the cooling pad of FIG. 1, and either depends on the disinfectant solution supplied from the disinfectant storage tank to the top of the filter using a water pump, or sprays the disinfectant solution supplied from the bottom of the filter to the ultrasonic humidifier vibrator 130 creates a water film of disinfectant solution inside the filter. 5 shows a wet/dry bulb hygrometer. The wet/dry bulb hygrometer consists of two thermometers and a humidity table as shown in FIG. The dry-bulb thermometer is left alone, and the wet-bulb thermometer is covered with a damp cloth. The wet bulb thermometer uses the principle that the temperature decreases as the water in the cloth evaporates (the liquid evaporates into a gas and absorbs the surrounding heat). If the surrounding humidity (the amount of water vapor in the air) is 100%, evaporation does not occur. Therefore, the temperature of the wet bulb thermometer will not go down. Conversely, if the humidity is low, evaporation will occur easily and the temperature will decrease well. If you apply wind to a wet bulb thermometer, the water will evaporate faster and the temperature around it will cool faster. In an embodiment of the present invention, as shown in FIG. 2, a temperature sensor T1 is disposed outside the system, and a temperature sensor T2 is disposed at the outlet portion of the microbial sterilization filter. The temperature sensor T2 acts as a wet-bulb thermometer, and as the disinfectant solution evaporates from the microbial sterilization filter, it absorbs the surrounding heat and the temperature is lowered. The water pump supplied to the microbial sterilization filter is controlled by an indirect humidity control method, and the ultrasonic humidifier is provided in the form of direct humidification. In the present invention, the relative humidity is calculated by referring to the difference between the temperature sensor T1 value and the temperature sensor T2 value and the humidity table of the dry and wet bulb hygrometer. By using the calculated relative humidity and the temperature appropriate humidity table of FIG. 4, the intake fan speed, ultrasonic humidifier vibrator, water pump, exhaust fan speed, and solenoid valves sol1 and sol2 are controlled. For example, if the temperature sensor T2 is 25˚C and the temperature sensor T1 is 28˚C and the temperature difference is 3˚C, as shown in FIG. 3, the relative humidity of the space is 78%. Since the optimum humidity for inhibiting the growth of microorganisms at 25˚C is 40%, the temperature difference between the temperature sensor t1 and the temperature sensor t2 must be made larger to lower the humidity. Therefore, by increasing the rotation speed of the fan in the intake part, the external humidity is quickly absorbed into the device, a lot of moisture is filtered from the moisture filter, and a large amount of disinfectant is supplied into the microbial sterilization filter by operating the water pump, and the evaporative cooling method is used. to increase the temperature difference. According to the fan rotation of the exhaust part, the speed of the fluid is formed as A>B>C>D. Therefore, the atmospheric pressure is formed in the order of A<B<C<D on the low-pressure formation channel, and the pressure at the top is lowered so that the disinfectant solution is supplied to the top by capillary action from the disinfectant storage tank through the microbial sterilization filter. If the relative humidity is 30% at the corresponding temperature, lower the fan rotation speed of the intake part to increase the relative humidity, and the external humidity is slowly sucked into the device. When the humidity is increased and provided to the outside, the relative humidity increases rapidly. 5 shows the intake fan rotation speed, ultrasonic humidifier vibrator, water pump, and exhaust fan rotation speed control algorithm for maintaining the microorganism growth inhibiting humidity based on the temperature appropriate humidity table and the humidity table of the dry and wet bulb hygrometer. In Fig. 5, the relative humidity is measured with the humidity table of the dry-wet-bulb hygrometer with two temperature sensors, and the relative humidity is compared with the appropriate temperature and humidity table of Fig. 4.

If the humidity is appropriate for the temperature, enter the H titration processor, open the solenoid valve 1 (sol1), and adjust the ultrasonic humidification amount in the middle. Control the discharge amount per hour of the water pump to middle and the fan speed of the exhaust to high. If the relative humidity is high for the temperature, a method of increasing the temperature difference of the wet/dry bulb hygrometer (evaporative cooling function is the maximum) is possible. By controlling the fan rotation speed of the intake part to high, the humidity in the moisture filter is lowered, the hourly discharge amount of the water pump is controlled high, and the fan rotation speed of the exhaust part is controlled high, and the temperature difference is increased.

If the relative humidity is low for the temperature, increase the relative humidity by lowering the fan rotation speed of the intake unit, controlling the ultrasonic humidification amount to high, or by connecting a hose and directly operating an external disinfection sprayer. The ultrasonic humidifier vibrator 140 atomizes the disinfectant solution, and directly supplies moisture from the rear end of the microbial sterilization filter to the exhaust unit through the venturi tube 150 .

A spray device is provided to enhance the air sterilization and surface sterilization effect at appropriate humidity. The atomizer is connected to the air sterilization module with a hose, and the valve 2 (sol2) is automatically controlled through the hose connection detection device. 7 shows another embodiment of the present invention. In Fig. 2, the disinfection sprayer connected to the water pump and hose is excluded, and it is an air sterilization device that is conveniently provided. In particular, it rapidly exhausts the mist of the ultrasonic humidifier through the low pressure formation flow path, and the low pressure is formed according to the height, resulting in capillary action in the microbial sterilization filter. Disinfectant can be supplied. 7, the position of the ultrasonic humidifier vibrator may be shifted to the lower end of the microbial sterilization filter, so that the capillary phenomenon and vaporized mist are simultaneously supplied to the filter.

In the present invention, an apparatus for maximizing the effects of air sterilization and surface sterilization at an appropriate humidity at which microbial growth is suppressed is provided through the above two embodiments.

Claims (8)

Air sterilization and disinfection solution spraying device using an appropriate humidity table that suppresses the growth of viruses and bacteria An air filtration filter for an air sterilization function in claim 1; moisture filter; Microbial sterilization filter; disinfectant storage tank; temperature sensor 1; temperature sensor 2; ultrasonic humidifier vibrator; exhaust; Device equipped with control unit In claim 1, the temperature sensor 1; A device equipped with a dry-wet-bulb hygrometer using the temperature sensor 2 A device equipped with a disinfectant sprayer connected to a hose for surface sterilization and maintaining an appropriate humidity that inhibits the growth of microorganisms in the disinfectant spray device of claim 1 [Claim 3] A device provided with an ultrasonic humidifier vibrator at the lower or rear end of the microbial sterilization filter in order to supply appropriate humidity at which the growth of microorganisms is suppressed in claim 2 [Claim 3] A device for generating a capillary phenomenon by forming a low-pressure forming flow path at the front end of the exhaust unit in claim 2 In claim 2, a device that uses water for the disinfectant storage tank, or divides the disinfectant storage tank into two and uses water and disinfectant to control the humidity to an appropriate level to suppress the growth of microorganisms. How to control the air sterilization and disinfection spray device to maintain the proper humidity that inhibits the growth of microorganisms

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