Pressure-induction speed increasing control method, high-static-pressure fan system and range hood

Abstract

The invention provides a pressure-induction speed increasing control method, a high-static-pressure fan system and a range hood. The pressure-induction speed increasing control method comprises the steps that S100, the back pressure value of an outlet, in a public flue, of a fan is detected, a control device acquires and compares the back pressure value, and the rotating speed and the power of a brushless direct-current motor are controlled according to the compared result so as to control the static pressure and the air volume of the fan; S200, when the obtained back pressure value is less than or equal to a preset value, the fan keeps the original gear function, the control device performs constant-power output control, the brushless direct-current motor keeps the constant rotating speed and power, and the fan keeps the constant static pressure and air volume; and S300, when the obtained back pressure value is greater than the preset value, the fan starts the cruising function, the control device performs variable-power control, the brushless direct-current motor changes the rotating speed and the power, and the fan is driven to change the static pressure and the air volume. According to the technical scheme of the pressure-induction speed increasing control method, the high-static-pressure fan system and the range hood, the air volume and the static pressure of the fan can be adjusted in real time according to the volume of kitchen oil fumes and the back pressure condition of the public flue, and the good oil fume exhausting effect can be achieved.

Description

technical field [0001] The invention relates to the technical field of kitchen electrical equipment, in particular to a pressure-sensing speed-up control method, a high static pressure fan system, and a range hood. Background technique [0002] At present, most of the residences are commercial buildings with high floors, and the kitchens use centralized public flues to exhaust smoke. However, there will be certain resistance when using the public flue to exhaust smoke intensively, and the higher the floor, the greater the resistance. When multiple range hoods work at the same time on the same floor, the resistance in the public flue will be very large, which will seriously affect the range hood exhaust effect of each user's family. Therefore, only by increasing the air pressure of the range hood and increasing the air volume can the range hood continue to exhaust air to the public flue smoothly. However, the air volume gear of the range hood in the traditional technology i...

AI Technical Summary

Problems solved by technology

However, the air volume gear of the range hood in the traditional technology is fixed, no matter how the size of the kitchen fume changes, it can only be adjusted by selecting a fixed gear, and a good smoke exhaust effect cannot be obtained; moreover, the traditional range hood gear The position can only be adjusted manually, and it is impossible to adjust the air volume of the range hood in real time according to the actual resistance of the public flue, which is laborious and time-consuming, and also affects the smoke exhaust effect

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