Smoke exhaust system and control method for building public flue

Abstract

The invention discloses a building public flue smoke discharge system. The system comprises range hoods mounted on different floors; and exhaust ports of all the range hoods communicate with a public flue through respective smoke pipes. The system is characterized in that an exhaust device capable of exhausting out gas in the flue is mounted at the bottom of the public flue; pressure sensors for detecting the pressure of the flue are mounted in the public flue; and each floor corresponds to one pressure sensor. The system further comprises a control system capable of reading pressure values of the pressure sensors and controlling working gears of the exhaust device. The building public flue smoke discharge system can discharge out low-layer lampblack through the exhaust device at the bottom of the flue, so that the bottom pressure of the flue is reduced, the smoke discharge capacity and the smoke discharge efficiency of the flue are improved, and the use experience of users is improved; and the control system can correspondingly control the working gears of the exhaust device according to the pressure values of the pressure sensors, so that the intelligent control of the smoke discharge system is realized, and the system achieves higher energy conservation.

Description

technical field [0001] The invention relates to a public flue for a building, in particular to a smoke exhaust system for a public flue for a building and a control method thereof. Background technique [0002] At present, there are more and more high-rise residential buildings, and most of the high-rise smoke exhaust uses public flues to exhaust the smoke. The outlets of high-rise public flues are generally set on the top of the floor, and the power provided by the range hood is limited, resulting in unsatisfactory smoke exhaust effects. During peak cooking hours, low-floor oil fumes cannot be exhausted, and even oil fumes in the flue may flow backward. At present, in order to solve the problem of poor smoke exhaust of existing range hoods, people have proposed the concept of "central purification system", which generates power through the main fan placed at the top of the public flue, and cooperates with the range hood fan on the user side to Improve smoke exhaust effect....

AI Technical Summary

Problems solved by technology

However, grease particles are easy to accumulate on the blades of the main fan on the roof, which not only damages the dynamic balance of the fan, resulting in increased noise and vibration, but also requires regular cleaning and maintenance, which is troublesome to maintain

Moreover, the main fan is set on the common exhaust channel, which will increase the exhaust resistance of the system

Especially when the number of floors is greater than 35, the negative pressure generated by the main fan on the top floor cannot be effectively transmitted, and pressure leakage occurs, which has almost zero impact on the smoke exhaust of low-rise users, which instead causes energy waste

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