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System and method for preparing plasma activated water for sterilization in cavity

A plasma and cold plasma technology, applied in the field of plasma sterilization and disinfection, can solve problems such as safety risks, and achieve the effect of low system use cost and strong sterilization ability

Inactive Publication Date: 2019-08-06
XI AN JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

And because the plasma is generally generated by high-voltage discharge, there may be safety risks if it penetrates directly into the cavity

Method used

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  • System and method for preparing plasma activated water for sterilization in cavity
  • System and method for preparing plasma activated water for sterilization in cavity
  • System and method for preparing plasma activated water for sterilization in cavity

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Such as figure 1 As shown, a system for preparing plasma-activated water for in-cavity sterilization includes a switch device, an aqueous solution storage tank, a water valve, an aqueous solution reaction tank, a gas circulation chamber, an air pump, a temperature control module, a temperature sensor, and a signal acquisition And control module, desiccant, cold plasma generation module and peristaltic pump.

[0029] The entire system is externally connected to a working power supply, which can provide a rated working voltage of 220V, and a switch device is provided between the system and the external working power supply. When the system needs to enter the working state, the switching device can be closed; when the system exits the working state, the switch The device can be disconnected.

[0030] The top of the aqueous solution storage tank is provided with a water injection hole for injecting the aqueous solution into the tank. The water injection hole is not complet...

Embodiment 2

[0037] Compared with embodiment 1, present embodiment has installed pH value detecting device in aqueous solution reaction tank, as figure 2 shown. Through the detection results of the pH value of the aqueous solution, the working states of the connected peristaltic pump and the cold plasma generation module are respectively controlled through a feedback control system. When the pH value of the aqueous solution in the aqueous solution reaction pool is between 3-6, the sterilization ability is the strongest, the peristaltic pump works, the discharge of the cold plasma generation module is weakened, and the number of cold plasmas is reduced; when the aqueous solution in the aqueous solution reaction pool When the pH value is greater than 6, the sterilizing ability is the weakest, the peristaltic pump stops working, the discharge of the cold plasma generation module is enhanced, and the amount of cold plasma generated increases.

Embodiment 3

[0039] Compared with embodiment 2, this embodiment increases the water level sensor and control module, such as image 3shown. The water level sensor is installed in the aqueous solution reaction tank and is connected with the water valve through the control module to monitor the change of the water level in the reaction tank. When the liquid level in the aqueous solution reaction tank falls below the threshold, the water level sensor feeds back a signal to the control module, and the control module can control the opening of the water valve, and the aqueous solution is injected into the aqueous solution reaction tank.

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PUM

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Abstract

The present discloses a system and a method for preparing plasma activated water for sterilization in a cavity, wherein the equipment used in the method comprises an aqueous solution storage device, acold plasma generator, a reaction cell, a switching device and a pump body. The invention further relates to a method for preparing plasma activated water for sterilization in a cavity, wherein an aqueous solution and cold plasma are subjected to a reaction in a reaction cell to form plasma activated water, and the plasma activated water is introduced into the corresponding position in a cavity through a pump body to perform sterilization treatment.

Description

technical field [0001] The invention relates to atmospheric pressure cooling plasma sterilization and disinfection technology, in particular to a system and method for preparing plasma-activated water for sterilization in a cavity. Background technique [0002] The direct use of atmospheric pressure-cooled plasma for sterilization has been widely reported, but it is difficult to apply in some special applications. An important occasion is to sterilize the inside of the closed cavity, because the cavity itself can only open a small hole, and the internal structure is relatively complicated, and it is difficult for the plasma to directly act on the part to be sterilized. And because the plasma is generally generated by high-voltage discharge, there may be safety risks if it penetrates directly into the cavity. [0003] Studies have found that the aqueous solution treated with atmospheric pressure cooling plasma also has the ability to sterilize, and this aqueous solution is c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/46A61L2/14
CPCA61L2/14C02F1/4608C02F2209/02C02F2209/06
Inventor 刘定新李乔松孔刚玉张靖垚刘昌
Owner XI AN JIAOTONG UNIV
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