Intelligent controller on kitchen fan and control method thereof

Abstract

The invention discloses an intelligent controller on a kitchen fan and a control method thereof. The controller can realize the time-sharing on-off control to the IGBT through the SPWM algorithm or the V/F algorithm according to the data of a lampblack concentration sensor, and outputs different frequencies and voltage, so as to adjust the running frequency of the fan. The SPWM or the V/F is adopted to control the fan, so that the fan can be smoothly started, and the impact current when a traditional motor starts is completely eliminated; and the SPWM algorithm or the V/F algorithm is adopted,and harsh noise of a motor is reduced through changing the switching frequency, so as to be more suitable for the auditory system of people; the running current of the fan can be detected in real time, and further, the real-time power and the energy conservation proportion can be effectively monitored in real time.

Description

technical field [0001] The invention relates to the field of kitchen fan research, in particular to an intelligent controller for a kitchen fan and a control method thereof. Background technique [0002] The range hood in the kitchen is installed above the kitchen stove, and is used to quickly suck away the waste burned by the stove and the oil fume harmful to the human body produced during the cooking process, so as to purify the kitchen environment. The current range hoods are all manually controlled. According to the different cooking procedures, the operator often needs to turn on and off repeatedly. Because the fan of the range hood will have a large inrush current when it is started, it will cause damage to the power grid and other equipment. big impact. In addition, the current fan speed mostly has only one gear, and can only run at the mains frequency of 50HZ. When the concentration of oil fume is small, there is a waste of electric energy. In response to this situ...

AI Technical Summary

Problems solved by technology

The current range hoods are all manually controlled. According to the different cooking procedures, the operator often needs to turn on and off repeatedly. Because the fan of the range hood will have a large inrush current when it is started, it will cause damage to the power grid and other equipment. great influence

In addition, most of the current fan speeds only have one gear, and can only run at the mains frequency of 50HZ. When the concentration of oil fume is small, there is a waste of electric energy

In response to this situation, some researchers have set the fan speed to multiple gears for users to adjust themselves. Although this method can reduce the waste of electric energy to a certain extent, it requires long-term maintenance in hotels and catering industries. In the case of formal cooking, the user needs to manually adjust repeatedly, which makes the use of the range hood cumbersome.

[0003] In addition, most of the traditional fans are placed indoors, and the noise during use is relatively large, which seriously affects the hearing of indoor personnel. The long-term existence of this noise will also cause certain damage to the human nervous system.

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