Air quantity control device and air quantity control method of centralized smoke extraction system and centralized smoke extraction system

Abstract

The invention provides an air quantity control device and air quantity control method of a centralized smoke extraction system and the centralized smoke extraction system and relates to the technicalfield of air purification. The air quantity control device comprises a fan main machine, an air valve control module, an air quantity detection module and a pressure acquisition module. The air quantity detection module detects the air quantity of a branch pipe in real time and sends the air quantity of the branch pipe to the air valve control module; the air valve control module controls switch-on of an air quantity regulating valve of a started range hood, sends a range hood starting signal to the fan main machine and regulates the air quantity regulating valve according to the air quantityof the branch pipe, so that the air quantity of the branch pipe is within a set air quantity valve range; the pressure acquisition module acquires the bottom pressure of a smoke extraction pipeline and sends the bottom pressure to the fan main machine; and the fan main machine controls a roof fan to operate according to the range hood starting signal and regulates the rotating speed of the roof fan according to the bottom pressure. The air quantities of floors are kept balanced, power of the roof fan is sufficient, and the air quantity is self-adapted and is not affected by the structure of the centralized smoke extraction system.

Description

technical field [0001] The invention relates to the technical field of air purification, in particular to an air volume control device and method for a centralized smoke exhaust system and the centralized smoke exhaust system. Background technique [0002] With the continuous improvement of people's living standards and residential conditions, the problem of smoke exhaust in residential buildings has attracted more and more attention. The principle of residential smoke exhaust is to discharge the smoke through the smoke exhaust pipe to the roof through the shaft. The power source of the traditional smoke exhaust is mainly range hoods. At present, high-rise buildings usually use a centralized kitchen smoke exhaust system powered by a roof fan. The system includes public flues. The machine is connected to the public flue through a connecting pipe. The range hoods on each floor adjust the air volume of each floor through electric valves. In order to ensure the balance of the...

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Problems solved by technology

[0004] The object of the present invention is to provide an air volume control device and method for a centralized smoke exhaust system and a centralized smoke exhaust system, so as to alleviate the low air volume control accuracy of the current centralized smoke exhaust system, which causes the air volume of each floor to be unbalanced, and is affected by the centralized kitchen exhaust system. The influence of the structure of the smoke system, the technical problem of poor adaptation

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