Thermal fogging disinfection

What is thermal fogging disinfection

In the heat shield, a solution diluted with diesel or petroleum in an insecticide solvent passes through a very short period of time for four hundred minutes at a high ignition point (about 400 to 600 degrees), disperses at the nozzle under pressure, and smoke is emitted to transport insecticide particles.

At this time, the size of the insecticide particles produced is 10 microns, and relatively large particles are transported closer and smaller particles are carried farther, and the maximum effective distance is about 12m for a portable smoke screen sterilizer.
* 1 micron = 1/1,000,000m

Principles of thermal fogging disinfection

1. Using the principle of the Pulse Zet engine, a certain amount of gasoline is sent from the Cabreta to the combustion chamber.
2. The combustion chamber where Grow Coil is refilled generates a certain amount of high heat and pressure due to continuous explosion.
3. High heat and pressure are injected through a long heat tube, and the drug ejected from the drug tank is aerosolized through the heat tube through the drug injection nozzle.

Effect of thermal fogging disinfection

1.  The particle size is smaller than that of spraying, mist, and haze, so the airborne stay time is long, so it penetrates deep into the deep corner space that does not reach other spraying methods and exhibits insecticidal effects on hidden pests.
2. Spatial spraying disinfection effect: Heating smoke is one of the methods of spatial spraying for pest control.
   Spatial spraying includes ultra-small amounts (ULV) spraying, haze, mist spraying, indoor aerosol and heating smoke film, and the size of final insecticide particles varies by spraying instrument.
   For mist spraying, ULV is 1 to 50 microns compared to 50 to 100 microns, and aerosol is mostly between 0.1 and 4 microns, mainly used indoors.
   However, the heat shield is primarily outdoors between 0.1 and 30 microns, with an optimal particle size of 10 to 20 microns, killing mosquitoes with 1 to 2 10 microns and house flies with 1 to 2 20 microns before 24hr.
   For example, 1g of an insecticide is about 4,000 microns with 30 raindrops, and if it is split into 40 microns, it generates 30,000,000 (3 billion) particles, and if it is split into 4 microns, it can be a more effective spraying method with 30,000,000 (3 billion) particles.
   However, particles <0.01 micron are decomposed or dissipated in the air before reaching the pest and have no insecticidal effect.

Characteristics of thermal fogging disinfection

1. The characteristic of the effectiveness of the heat shield is that insecticide particles can be transported and infiltrated to a gap in the narrow space on the back of the leaf hidden for 3 to 4 days after the mosquito absorbs blood, whereas in the case of regular spraying, they can reach the front of the leaf but not the back.
   For this reason, only a heat shield can kill hidden mosquitoes because mosquitoes that have sucked cow or pig blood are hidden around the shed for three to four days.
2. Currently, the most important advantage of heating smoke is that insecticide particles can penetrate into the grass where mosquitoes are hiding and into the back of leaves to control mosquitoes, and heating smoke is most easily controlled by young adults whose pupae have just hatched near the source of mosquitoes.

Period of thermal fogging disinfection

• During the day, due to geothermal heat, solar heat, and air circulation, particles fly into the sky, which has no insecticidal effect.
  Therefore, the best time is between 7 p.m. and 9 p.m., when pests (mosquitoes, slats, and weevils) are active.
  In the morning, since pests are active or hiding, smoke carries pesticide particles to hiding places and contacts them to kill them. The size of the insecticide particles in most heated film is 10 microns, and at a distance of 30 m, many below 10 microns fall, and smaller particulates float in the air and go further.
  If most of the particles are assumed to be 10 microns, it can be assumed that a 1-milliliter insecticide is insecticidal by spraying 120 million particles into contact with mosquitoes and flies.

How to sterilize thermal fogging disinfection

1. Diesel (or petroleum) and drugs are usually mixed at about 70:1.
2. The drug must be mixed only with pesticides for smoke disinfection. (Only use “fume-disinfecting insecticide”)
   – Indicated if the medicine container is mixed with water or with petroleum (or diesel).
   – When the general spray medicine is mixed with petroleum (or diesel), the Ichiro medicine, which does not mix water and oil, is sprayed separately through diesel, which has no medicinal effect.
3. While walking at a human walking speed (3-4 km per hour) in front of the 4-5m where you want to spray, spray while adjusting the amount with the drug valve in front of the machine.

* According to foreign literature, kerosene has twice (200%) insecticidal effect than diesel, and heating smoke has a better insecticidal effect or the same effect than non-heating smoke. (MosquitoNews. 1972. 1968. 1954)
In the heat-film effect experiment in Korea, it was confirmed that kerosene for boilers was 30% to 40% better than diesel.