Climate room for high precision dynamic detection for large-sized VOC detection and its detecting apparatus

Abstract

The invention relates to a VOC climate room which is used for detecting the release substance of artificial board or solid wooden furniture, the climate room is composed of detection room, moisture generator used to guarantee a certain humidity gas, temperature control water box which provides a cycle hot water of a certain temperature to the heat exchanger, pressure controller, whirlpool pump for generating cycle gas, signal acquisition system, the PLC controller and computer, of which moisture generator, pressure controller which is said separately connect with the PLC controller through a system bus ,PLC controller also connected with the computer.

Description

technical field [0001] The invention relates to an evaluation method and technology for researching or detecting VOC release amount or release law of large household items, furniture, upholstered furniture, light industrial products, etc. made of wood-based panels or solid wood, and comprehensive environmental indicators. It belongs to the synthesis of forest product industry, wood-based panel processing, control science and other fields. Background technique [0002] At present, foreign countries have begun to study the VOC release amount or release law of large household items, furniture, upholstered furniture, and light industrial products, as well as the evaluation methods and technologies of comprehensive environmental indicators. That is to put the above items into a large-scale climate chamber to detect the amount of VOC released under certain conditions, or to study its release law and the evaluation and technology of comprehensive environmental indicators, and to gi...

AI Technical Summary

Problems solved by technology

Therefore, it is difficult to achieve the required control accuracy by using the conventional control algorithm and the control system constructed by the general controller

[0005] Most of the large-scale VOC detection rooms developed abroad tend to use large-scale refrigeration and humidification equipment such as air conditioners, humidifiers, and dehumidifiers. This method can control the temperature and humidity within a certain range, but the control accuracy is not high, and the uniformity and fluctuation of temperature and humidity The performance tolerance is very large; secondly, there will be condensation in the testing room, and harmful volatiles will dissolve into it, which will cause errors in the testing results, which is absolutely not allowed when testing formaldehyde or VOC; in addition, more energy is consumed, and the effect Not ideal and expensive

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