Control device and control method for integral centralized air processing system

Abstract

The invention discloses a control device used for a centralized air processing system, which comprises a plurality of frequency converters, a plurality of actuators, a plurality of sensors, and a controller, wherein the frequency converters are connected with a plurality of fans respectively, and used for controlling rotation frequencies of the corresponding fans to adjust the generated air volume; the actuators are connected with a plurality of air valves and a water valve of a surface air cooler respectively, and used for controlling the air valves and the water valve to accomplish adjustment on the conveying or discharge air volume; the sensors are arranged on a plurality of air pipes and a freezing water pipe of the surface air cooler respectively, and used for collecting a temperature and a concentration of indoor CO2; and the controller is used for processing sensor data, generating a signal to control the frequency converters and the actuators to adjust the fans, the air valves and the water valve, accomplishing coordination among air supply, air return, fresh air and air discharge, and achieving indoor air treatment. The control device utilizes humiture and CO2 concentration measurement signals and adopts an integral control mode to accomplish temperature control of an air conditioning system and indoor hot comfort control, and the anti-interference capability and an energy-saving effect are improved.

Description

technical field [0001] The invention belongs to the technical field of air conditioning system control, and in particular relates to a control device and method for an integrated centralized air treatment system, which is suitable for centralized air treatment systems in crowded indoor areas such as subway stations. Background technique [0002] Air-conditioning systems can be divided into comfort air-conditioning and technological air-conditioning according to their different service objects. Technological air conditioners are used to meet the production process or store items, and maintain the best indoor conditions for indoor operating machines and equipment. They are used in precision machinery processing, instrument manufacturing, medicine and food, textile industry, tobacco industry, etc. Therefore, technological air conditioners require high control precision of temperature and humidity. Comfortable air conditioners serve indoor people and aim to create a comfortable...

AI Technical Summary

Problems solved by technology

Due to the need for energy saving, the general centralized air handling system adopts variable air volume control, that is, to maintain a good temperature control in the subway station under the condition of constantly changing air volume, so the control will be more complicated

At present, the control scheme and control logic design of many centralized air treatment systems are not very good. They all use the method of single-device control alone, and do not use integrated correlation control, resulting in unsatisfactory control effects and high energy consumption.

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