Flow distribution control method of high-rise building central flue system

Abstract

The invention discloses a flow distribution control method of a high-rise building central flue system. The central flue system comprises range hoods mounted on different floors, wherein the air outlet of each range hood communicates with a public flue through a respective smoke tube; a draught fan flow detecting module is mounted on each of the smoke tubes; the flow distribution control method comprises the following steps: through calculating the difference of the current flow and the target flow, determining the initial adjustment amount and the further adjustment amount, after estimating,adjusting and accelerating the compensation quantity, calculating new adjusting variable quantity, and compensating motor adjustment until the flow is within the target scope. The flow distribution control method has the following advantages: the rotary speed or gear of large air volume of part of high floors can be lowered through frequency conversion, gear shifting and other manners, the rotaryspeed or gear of the range hood on the lower floor and with larger resistance is increased, basic guarantee of effective air volume is realized, difference of the smoke discharging effect on differentfloors is eliminated, and through frequency conversion or gear shifting control of the indoor range hood, the control process is more efficient, energy-saving and less in loss.

Description

technical field [0001] The invention relates to a central flue system, in particular to a flow distribution control method for the central flue system of a high-rise building. Background technique [0002] At present, the floors of newly-built buildings in cities are generally higher and higher, and are mainly decorated with engineering. Most high-rise residences use indoor range hoods, smoke pipes, check valves and public flues to connect, so that the cooking fumes in the kitchen can pass through the indoor exhaust pipes. The power range hood is discharged into the public flue through the smoke pipe. Since the outlet of the high-rise public flue is generally set at the top, the switch of the range hood at the user's home will affect the system outlet resistance. The increase in the distance of the flue will increase the loss along the way, and the exhaust of the range hood upstairs will cause the smoke exhaust resistance downstairs. The increase makes the pressure distribu...

AI Technical Summary

Problems solved by technology

It can be seen that this kind of control method achieves balanced flow adjustment by increasing the resistance at the outlet, and the energy consumption is relatively large, which is not efficient enough and energy-saving.

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