Atmospheric-pressure low-temperature plasma sterilizing device and sterilizing method

A low-temperature plasma and sterilization device technology, which is applied in water supply devices, food science, sanitary equipment for toilets, etc. Simple method, high sterilization efficiency and low energy consumption

Active Publication Date: 2012-02-08
东丰科林(天津)医疗科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] However, the plasma area generated by the traditional jet method is small and the gas flow rate is high, so it is impossible to sterilize the surface of large-area materia...

Method used

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  • Atmospheric-pressure low-temperature plasma sterilizing device and sterilizing method
  • Atmospheric-pressure low-temperature plasma sterilizing device and sterilizing method

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Embodiment Construction

[0029] Below in conjunction with accompanying drawing and embodiment the utility model is further described.

[0030] Such as figure 1 The electrode-inserted quartz plate coplanar dielectric barrier discharge sterilization device shown, wherein,

[0031] The sinusoidal AC power supply 1 has a voltage adjustment range of 0-20kV and a frequency adjustment range of 0-20kHz. The power supply 1 is connected to an oscilloscope 8 through a high-voltage probe 7 and a low-voltage probe 9 to monitor and control the peak-to-peak voltage of the power supply within 4- 10KV, frequency adjustable from 0-20KHz;

[0032] A series of parallel channels parallel to the upper and lower surfaces of the dielectric plate 11 are opened on both sides of the quartz dielectric plate 11, and the diameter of the aperture matches the cross-sectional diameter of the electrode;

[0033] The electrodes are tungsten electrodes, including high-voltage electrodes 3 and ground electrodes 4 respectively inserted ...

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PUM

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Abstract

The invention relates to an atmospheric-pressure low-temperature plasma sterilizing device and a sterilizing method. In the device, the side face of a medium plate is provided with a hole into which a high-voltage grounded tungsten electrode is inserted; an atmospheric-pressure medium blocking discharging way is formed after a high-voltage alternating-current power supply is switched on; and a large area of uniform low-temperature plasmas are produced on the inner surface of a hermetical plastic package filled with reaction gas for sterilizing and disinfecting. The device has a simple structure and low cost, and a complex vacuum system is not required. Harmful fungi are specially killed by using the activity of the produced plasmas. Active substances have very high chemical activity, and undergo a biochemical reaction with fungal cells, so that cell apoptosis is caused in a short period of time. The device and the method have the remarkable characteristics of high sterilizing efficiency and low energy consumption.

Description

technical field [0001] The invention relates to plasma sterilization, in particular to an atmospheric pressure low-temperature plasma sterilization device and a sterilization method. Background technique [0002] Atmospheric pressure low-temperature plasma biological material surface treatment technology does not require complex vacuum equipment, has the characteristics of low cost, low energy consumption, high efficiency, etc., the gas temperature is low (40-80 degrees Celsius) during discharge, and the surface of biological materials will not be damaged during the treatment process. It has important applications in medical device sterilization and food safety. In the past ten years, the use of atmospheric pressure low-temperature plasma sterilization technology has set off a global upsurge. At present, there are many research groups in the world carrying out research work in this area. Research work in this area is still relatively lacking in our country, especially the ...

Claims

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Application Information

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IPC IPC(8): A61L2/14A23L3/32
Inventor 刘东平
Owner 东丰科林(天津)医疗科技有限公司
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