초록 ▼

A control for a fan has a temperature sensor and a humidity sensor the outputs of which are supplied to a processor. The processor switches on the fan when certain temperature and humidity conditions are met. The processor turns on the fan in response to an increase in temperature and humidity, a la

A control for a fan has a temperature sensor and a humidity sensor the outputs of which are supplied to a processor. The processor switches on the fan when certain temperature and humidity conditions are met. The processor turns on the fan in response to an increase in temperature and humidity, a larger increase in humidity being required for a smaller increase in temperature. The fan is also turned on when humidity rises above a certain threshold value, which is lower for higher temperatures.

대표청구항 ▼

[ What I claim is:] [1.] A fan system comprising: an electric fan; humidity sensing means; temperature sensing means; processor means; a connection between said humidity sensing means and the processor means; and a connection between said temperature sensing means and the processor means so that the

[ What I claim is:] [1.] A fan system comprising: an electric fan; humidity sensing means; temperature sensing means; processor means; a connection between said humidity sensing means and the processor means; and a connection between said temperature sensing means and the processor means so that the processor means receives outputs from both said humidity sensing means and said temperature sensing means and provides fan output control signals to activate said fan, wherein said processor means is arranged to provide said fan output control signals to said fan both in response to a rise in sensed humidity exceeding a first predetermined rise in humidity accompanied by a rise in sensed temperature exceeding a first predetermined rise in temperature and in response to a second rise in sensed humidity exceeding a second predetermined rise in humidity greater than said first predetermined rise in humidity accompanied by a rise in sensed temperature exceeding a second predetermined rise in temperature lower than said first predetermined rise in temperature.