Hydrogen peroxide sterilization device and method

Abstract

A hydrogen peroxide sterilization device comprises a hydrogen peroxide liquid storage barrel, an ultrasonic atomizer, an electrical control unit, a vaporizing chamber, a metering pump, an solenoid-controlled valve, an air blower, a heater, a filter device, an air inlet and a steam outlet pipe; the ultrasonic atomizer is further provided with an ultrasonic nozzle provided with an air flue to evenly diffuse atomized hydrogen peroxide microdroplets in the vaporizing chamber, the vaporization efficiency is improved, the atomized hydrogen peroxide microdirplets can be vaporized rapidly at a lower temperature, and the energy is saved. Indoor air serves as carrier gas, outside air is not introduced, and secondary pollution is avoided. Hydrogen peroxide big droplets which are not vaporized in the vaporizing chamber can drop back on the heater under the action of gravity to be vaporized again. By controlling various related parameters, a dew point temperature of output vaporized hydrogen peroxide is made to be lower than the indoor temperature all the time, a steady flow is guaranteed for the vaporized hydrogen peroxide, and the water mist condensation phenomenon which occurs in the transport process are avoided.

Description

technical field [0001] The invention relates to the field of disinfection and sterilization, in particular to a device and method for sterilization using hydrogen peroxide. Background technique [0002] In industries such as medicine and food, it is usually necessary to disinfect and sterilize the objects and space environment in a certain space to ensure product quality and reliability of experimental data. Vaporized hydrogen peroxide is a sterilization and disinfection method that converts liquid hydrogen peroxide into gaseous hydrogen peroxide at room temperature. Advantages: After generating free hydroxyl groups, it is used to attack cell components, including lipids, proteins and DNA tissues, and achieves the requirement of complete sterilization. The advantages of using vaporized hydrogen peroxide for sterilization mainly include dryness, fast action, non-toxic and no residue. [0003] Hydrogen peroxide generally exists in the form of a solution. Because the boiling ...

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Problems solved by technology

However, there are obvious defects in this vaporization method. First, flash evaporation is achieved by dropping a small amount of hydrogen peroxide solution on a hot surface. Hydrogen peroxide is brought out, so energy is wasted seriously; secondly, the titration method must maintain a single droplet, so that the injection rate is limited, and it is difficult to generate a large amount of disinfection gas in a short time

In addition, condensation is prone to occur during the transmission of vaporized hydrogen peroxide, which has not been solved in the prior art

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