Ultrasonic-assisted hydrogen peroxide sterilization method and device

Patent metadata

Field	Value
Publication number	US-2025222150-A1
Application number	US-202418605676-A
Country	US
Kind code	A1
Filing date	Mar 14, 2024
Priority date	Jan 5, 2024
Publication date	Jul 10, 2025
Grant date	—

Abstract

An ultrasonic-assisted hydrogen peroxide sterilization method and device are provided. The sterilization device includes a vaporization chamber, which has an inlet at an upper side and an outlet at a lower side, and a packaging film can be extended into the vaporization chamber from the inlet and extended out of the vaporization chamber from the outlet. An ultrasonic atomizer is arranged at a top of the vaporization chamber, which is externally connected to a liquid storage tank through a pipeline with a valve, liquid hydrogen peroxide is stored in the liquid storage tank, and the liquid hydrogen peroxide is atomized into hydrogen peroxide steam through an ultrasonic atomizer vibrator. A slit nozzle is arranged at an atomization outlet of the ultrasonic atomizer, through which the hydrogen peroxide steam is sprayed on a surface of the packaging film in the vaporization chamber, thus achieving rapid sterilization of the packaging film.

First claim

What is claimed is:

1 . An ultrasonic-assisted hydrogen peroxide sterilization device, comprising:
a vaporization chamber, an inlet is formed at an upper side of the vaporization chamber and an outlet is formed at a lower side of the vaporization chamber, a packaging film is extended into the vaporization chamber from the inlet and extended out of the vaporization chamber from the outlet; an ultrasonic atomizer, arranged at a top of the vaporization chamber, the ultrasonic atomizer is externally connected to a liquid storage tank and capable of atomizing liquid hydrogen peroxide into hydrogen peroxide steam by means of ultrasonic waves; and a slit nozzle, arranged at an atomization outlet of the ultrasonic atomizer, the hydrogen peroxide steam is sprayed on a surface of the packaging film in the vaporization chamber through the slit nozzle.

2 . The ultrasonic-assisted hydrogen peroxide sterilization device according to claim 1 , further comprising a heating portion, the heating portion is arranged at a bottom of the vaporization chamber for heating and decomposing residual hydrogen peroxide after sterilization.

3 . The ultrasonic-assisted hydrogen peroxide sterilization device according to claim 1 , wherein a plurality of rollers are sequentially arranged in the vaporization chamber at intervals in a staggered manner, and the packaging film entering the vaporization chamber from the inlet passes through the plurality of rollers in sequence and exits the vaporization chamber from the outlet after.

4 . The ultrasonic-assisted hydrogen peroxide sterilization device according to claim 1 , wherein the ultrasonic atomizer comprises an ultrasonic generator and an oscillating spring, and the liquid storage tank communicates with an interior of the oscillating spring through a pipeline.

5 . The ultrasonic-assisted hydrogen peroxide sterilization device according to claim 4 , wherein a peristaltic pump is arranged at the pipeline.

6 . The ultrasonic-assisted hydrogen peroxide sterilization device according to claim 1 , wherein the slit nozzle is arranged at the atomization outlet at a bottom of the ultrasonic atomizer.

7 . The ultrasonic-assisted hydrogen peroxide sterilization device according to claim 1 , wherein a concentration sensor and a temperature sensor are mounted in the vaporization chamber to detect temperature and concentration of atomized hydrogen peroxide in the vaporization chamber, respectively.

8 . An ultrasonic-assisted hydrogen peroxide sterilization method, comprising the following steps:
Step 1: opening a liquid storage tank and turning on an ultrasonic atomizer to atomize liquid hydrogen peroxide by means of ultrasonic waves; Step 2: when concentration of atomized hydrogen peroxide in a vaporization chamber reaches a set value, enabling a packaging film to extend into the vaporization chamber from an inlet, and sterilizing a surface of the packaging film; and Step 3: enabling the sterilized packaging film to exit the vaporization chamber from an outlet after residual hydrogen peroxide on the surface is heated and decomposed.

Assignees

• Univ Zhejiang

Inventors

• Liu Donghong
• Lv Ruiling
• Wang Wenjun
• Zhou Jianwei
• Chen Tingting
• Yu Songfeng
• Chen Yi

Classifications

• A61L2103/23

  Containers other than laboratory or medical, e.g. bottles or mail · CPC title

• A61L2/208 Primary

  Hydrogen peroxide · CPC title

• A61L2/22 Primary

  Phase substances, e.g. smokes or aerosols · CPC title

• A61L2202/13

  Biocide decomposition means, e.g. catalysts, sorbents · CPC title

• B65B55/10

  by liquids or gases · CPC title