Central flue system and air quantity self-adaptive adjusting method of central flue system

Abstract

A central flue system comprises range hoods installed on different floors, an electric check valve is installed in each flue pipe, a flue main fan is installed in a public flue, each range hood comprises a fan, a range hood control system of the system sends a signal including floor position and start-up gear information to a main control system, the main control system calculates the opening rateof the whole building and outputs main machine power, and the range hood control system sends a signal to an electric check valve control system according to the opening rate information, so that thevalve plate opening angle is then controlled by the electric check valve control system. The invention also discloses an air quantity self-adaptive adjusting method of the central flue system. The central flue system has the advantages that on the premise of reserving the fans of the indoor range hoods, a main machine is installed at a public flue port, so that the problem that for low-level users in a high-rise building, smoke is difficult to exhaust is solved, oil smoke is efficiently purified, the whole building can still exhaust smoke when the main machine fails, the use frequency and thefailure rate of valve plates of the electric check valves and the main machine are reduced, and the service life is prolonged.

Description

technical field [0001] The invention relates to a central flue system, in particular to a central flue system and an air volume adaptive adjustment method thereof. Background technique [0002] Present high-rise dwelling adopts indoor range hood, smoke pipe, check valve and public flue mostly to be connected, and the oil fume in the kitchen is exhausted in the middle of public flue through smoke pipe by indoor powered range hood. However, the cooking habits of Chinese cooking fumes and the current situation of large air volume and high wind pressure of existing range hoods make the pressure distribution in public flues extremely uneven, and there is a problem of poor smoke exhaust. The smoke effect is poor, especially during the peak cooking period; at the same time, the valve plate of the check valve is not closed tightly, which is prone to return smoke and odor. Especially for engineering range hoods, due to their relatively poor performance, it is more obvious that it is...

AI Technical Summary

Problems solved by technology

However, in order to achieve uniform flow distribution on each floor in this way, the adjustment algorithm of the valve plate angle will be more complicated, because the influence of factors such as the starting rate, starting position, and flue structure size must be considered, especially to achieve multiple indoor units. Gear adjustment will be more difficult

In addition, in this way, since the grease enters the flue without effective separation in the room, the inside of the flue will be full of grease, and at the same time it will reduce the service life of the electric check valve; in addition, it will also face the problem that it cannot be used when the host fails. , and the host is still in a high power running state under low boot rate, etc.

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