Plasma purifier optimization control method

A plasma and purification device technology, which is applied in the control field of plasma purification devices, can solve the problems of increased operation and maintenance costs, and achieve the effect of no secondary pollution

Inactive Publication Date: 2014-06-04
INST OF PLASMA PHYSICS CHINESE ACAD OF SCI
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  • Application Information

AI Technical Summary

Problems solved by technology

The various components of the air purifier are usually in a continuous working state, and some components such as negative ion (plasma) generators, ultraviolet and photocatalyst components have a certain service life, continuous work will re

Method used

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] Example 1: Treatment of inhalable particulate matter (standard for inhalable particulate matter in indoor air GB / T17095)

[0048] In the simulation laboratory, quantitative printer toner is distributed in the test space to simulate the situation of exceeding the standard of inhalable particulate matter, and the initial concentration of the space is obtained by the impact weighing method.

[0049] Using the control method of the preferred plasma purification device of the present invention, the sensor detects that the particulate matter exceeds the standard, and it is preferred that the air disinfection module 2 and the plasma generator 3 work in parallel. Use this method to work for 24 hours to re-sample the content of particulate matter in the air. Its content dropped from the initial 1.00 mg / L to 0.04 mg / L, and the decomposition rate reached 96%. During the test, the sensor dynamically monitors the air quality. When the particle content is lower than the national sta...

Embodiment 2

[0051] Embodiment 2: Treatment of VOC and odor gas

[0052] In the simulated laboratory, formaldehyde solution, benzene, methyl mercaptan solution (the solutions used are all analytically pure solutions), and ammonia solution were placed in a watch glass, and volatilized in the space for 12 hours, and then the initial concentration was sampled. Relevant standards are based on GB / 18883-2002, GB / T 18204.25-2000, GB / T 18204. 26 - 2000, GB 11737-89.

[0053] Using the control method of the preferred plasma purification device of the present invention, the sensor detects that ammonia and VOC exceed the standard, and the plasma generator 3 and the nano-light hydrogen ion air cleaner 4 are preferably operated in parallel. Use this method to work for 24 hours to sample the corresponding pollutant content in the air again, and obtain its degradation rate. The 24-hour degradation rate reached above 91.5%. During the test, the sensor dynamically monitors the air quality. When the pollu...

Embodiment 3

[0055] Embodiment three: sterilization test

[0056] Firstly, in the simulation laboratory, the device is used to detect the air quality, and all the indicators have reached the national standard. Use the impact method GB / T 18204.1-2000 to obtain the initial number of colonies in the air.

[0057] By adopting the control method of the preferred plasma purification device of the present invention, the air quality detected by the sensor all reaches the national standard. Preferably, the air disinfection module 2 works for 24 hours, then measures the total number of bacteria in the air, and obtains the sterilization rate. The 24-hour sterilization rate reaches more than 99%. During the test, the sensors dynamically monitor the air quality, and the corresponding modules are optimized to work in parallel or individually. At the same time, according to the detected ozone concentration during the test, the output power of the high-voltage power supply is dynamically adjusted to co...

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Abstract

The invention discloses a plasma purifier optimization control method. Various gas and particle sensors, a controller and external execution units form a closed-loop control circuit. A current air sampled value is compared with the national standard to judge air pollution index, and a corresponding air purification method is optionally selected; output power of a digital direct-current power source is changed according to measured ozone concentration, and the ozone concentration is dynamically controlled to maintain in the optimal range of the national standard.

Description

technical field [0001] The invention relates to the field of gas purification, in particular to a control method for a preferred plasma purification device. Background technique [0002] With the development of society and the enhancement of environmental awareness, people have higher and higher requirements for the air quality of their living environment. However, with the development of urban industrialization, the acceleration of urbanization and the construction of infrastructure, air pollution has become more and more serious. Volatile organic substances (VOC, such as formaldehyde, toluene, xylene, etc.), inhalable particulate matter (PM2.5, PM10), ozone content, and the total number of air bacterial colonies have become important indicators for evaluating indoor air quality. [0003] In such an environment, even if the windows are closed to reduce ventilation, the gaseous substances such as bacteria, viruses, odor molecules, VOCs, and inhalable particles such as dust ...

Claims

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Application Information

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IPC IPC(8): F24F11/02F24F11/00
Inventor 王祥科程诚沈洁李家星谢洪兵
Owner INST OF PLASMA PHYSICS CHINESE ACAD OF SCI
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