Patent ID: 6920442
Filing Date: 2005-07-19
Classification: F04D,F24F,G05B

Abstract:
1. A method for controlling the operation of an electric fan comprising: initializing a status of the electric fan; operating keys of the electric fan to change a system setup rate by a user; and setting an operating mode of the electric fan to a sleeping mode including: using a predetermined period of time to be a preset period; using another predetermined period of time to be a big cycle time; setting a blowing period and a stopping period to be a small cycle time; making the electric fan blow and stop blowing according to the blowing period and the stopping period, respectively, and continuing blowing and stopping blowing of the small cycle time repeatedly in the period of the big cycle time; determining whether to achieve a timer setup when the period of the big cycle time ends; if not, changing the blowing period and the stopping blowing period of the small cycle time, shortening the blowing period and lengthening the stopping blowing period, making the electric fan blow and stop blowing according to the shortened blowing period and the lengthened stopping period, respectively, and restarting another big cycle time; and if yes, stopping the electric fan.