The working principles of the three main popular hydrogen peroxide sterilizers on the market are introduced respectively.
- Cold evaporation hydrogen peroxide disinfection machine
Working principle: The built-in high-pressure fan is used to make the air velocity of the nozzle of the equipment reach about 80m/s, forming a strong Venturi effect, thereby forming a negative pressure area at the nozzle, and sucking out the low-concentration hydrogen peroxide disinfectant inside the equipment.
Advantages: The spray particle size is about 1 micron, the distribution is more uniform, and the diffusion effect is better.
Disadvantages: The high-pressure fan consumes more power and generates more noise.
- Dry mist hydrogen peroxide sterilizer.
Principle of action: The built-in compressor or external air source is used to make the air speed of the nozzle outlet of the equipment reach about 45m/s, forming a stable Venturi effect, thereby forming a negative pressure area at the nozzle, and removing the low-concentration hydrogen peroxide disinfectant inside the equipment. suck out.
Advantages: The spray particle size is about 5 microns, and the dry fog is evenly distributed.
Disadvantages: After the spray is completed, a thin layer of water mist may be formed on the surface of the space object.
- Vaporized hydrogen peroxide sterilizer
Principle: The internal flash evaporation module is adopted, so that the 30-35% hydrogen peroxide disinfectant added to the equipment is instantly heated and vaporized into hydrogen peroxide in molecular state.
Advantages: Hydrogen peroxide gas is sprayed, molecular level, penetrating and high-efficiency, and can also sterilize the independent pipeline of Venus in small cavities such as biological safety cabinets.
Disadvantages: The concentration in the sterilization process is relatively high, and the initial environment of the sterilization area should be strictly controlled to prevent condensation from causing corrosion.
The atomization equipment is similar to the air humidifier at home. The disinfectant is added to the device, and the power unit inside the device atomizes the disinfectant into particles smaller than ten microns through the nozzle, and continuously performs Brownian motion in the space to fully diffuse and disinfect.