Fan control method and device

Abstract

The invention provides a fan control method and device. The method comprises the steps: obtaining on-off state information of smoke exhausting equipment arranged at a plurality of floor air inlets in a flue and the equipment information of the smoke exhausting equipment; when the smoke exhausting equipment in an on state exists, determining target air pressure and target air volume of smoke exhausted from the flue according to the equipment information of the smoke exhausting equipment in the on state; according to the target air pressure and the target air volume, determining the target frequency of a fan arranged at a flue outlet by using a preset air pressure and air volume curve; sending a control signal to a frequency converter, thus enabling the frequency converter to drive the fan to work according to the target frequency, and then exhausting the smoke exhausted by the smoke exhausting equipment in the flue. The method achieves the technical effects that the working frequency of the fan is adjusted along with the change of the air volume and the air pressure in the flue, and the demand of the air pressure and the air volume is matched with output; energy is saved, and the smoke exhausting effect is good.

Description

technical field [0001] The invention relates to the technical field of central air purification systems, in particular to a fan control method and device. Background technique [0002] High-rise residences are generally designed with a public flue. The cooking fume in the kitchen at the same location on each floor is discharged into the public flue through a range hood, and then passed through the public flue under the action of a fan installed at the flue opening of the public flue. The exit at the top of the building enters the atmosphere. [0003] However, there is a problem that the fan in the central air purification system does not match the amount of ventilation produced by the fan when it is working. Overcapacity may lead to energy waste; during the peak cooking period, range hoods on each floor actively exhaust smoke into the public flue through their own fans. The amount of smoke exhausted will cause the smoke exhaust effect of the range hood in use to deteriorat...

AI Technical Summary

Problems solved by technology

[0004] In view of this, the object of the present invention is to provide a fan control method and device to alleviate the technical problem in the prior art that the ventilation volume produced by the fan during operation does not match the smoke exhaust volume.

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