Smoke exhaust system for common flue of building and control method thereof

Abstract

The invention relates to a smoke exhaust system for a common flue of a building. The system comprises a common flue and extractor hoods mounted in floors. An electric heating film is mounted on the inner wall of the common flue, a first temperature sensor for detecting the lampblack gas temperature of the flue is mounted in the common flue, and a second temperature sensor for detecting outdoor temperature is mounted on the roof. The smoke exhaust system also comprises an electric heating film control system and a master control system. The master control system can read the value of the second temperature sensor, the electric heating film control system can read the value of the first temperature sensor and the value of the second temperature sensor sent by the master control system, and can control an electric heating film according to a temperature difference value between the inner part of the common flue and the outdoor part. The smoke exhaust system has the advantages that the smoke exhaust system for the common flue of the building can change the temperature difference between the temperature of the lampblack gas in the flue and the outdoor environment by controlling the electric heating film, so that the hot pressing action of the flue is enhanced, the pressure distribution of the flue is enhanced, and the smoke exhaust capacity of the flue is improved.

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

Images