Central flue system and uniform flow distribution method thereof

Abstract

The invention discloses a central flue system. The central flue system comprises range hoods, an outdoor control system and a check valve control system, wherein an air outlet of each range hood is incommunication with a public flue through a respective smoke pipe, an adjustable check valve is mounted in each smoke pipe, a flue fan is mounted in the public flue, the range hoods are unpowered range hoods, the outdoor control system is used for controlling the rotating speed or frequency of the flue fan, the check valve control system is used for adjusting the opening angle of a valve plate ofthe adjustable check valve, and the check valve control system and the outdoor control system can communicate with each other. The invention further discloses a flow uniform distribution method of thecentral flue system, an extractor hood of the central flue system is an unpowered extractor hood, the rotating speed or frequency of the flue fan is adjusted through the outdoor control system, the opening angle of the valve plate is controlled through the check valve control system, the flow uniform distribution method only needs to preset the preset angles of the valve plate under two differentstarting rates, uniform flow distribution can be ensured through judgment of the startup rate, and the adjustment process is simple and efficient.

Description

technical field [0001] The invention relates to a central flue system, in particular to a method for evenly distributing flow in the central flue system. Background technique [0002] Most of the present high-rise residences adopt indoor range hoods, smoke pipes, check valves and public flue to be connected, so that the oil fume in the kitchen is discharged into the middle of the public flue through the smoke pipe through the indoor powered range hood. However, the cooking habits of Chinese people with oil fume and the current situation of large air volume and high air pressure of the existing range hoods make the pressure distribution in the public flue extremely uneven, and there is a problem of poor smoke exhaust. The smoke exhaust effect is poor, especially in the peak cooking period, the smoke exhaust effect of the bottom layer is even worse; at the same time, the check valve valve plate is not closed tightly, which is prone to return smoke and odor. In addition, in or...

AI Technical Summary

Problems solved by technology

However, this type of smoke exhaust system is still in the research stage, especially how to ensure that the flow distribution of each floor is even, and there is little research on how to meet the purpose of high efficiency and energy saving, and there is no corresponding operable and easy-to-implement method.

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