Method of water temperature calibration for electric kettle
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United States of America Patent
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Sep 21, 2010
Grant Date -
Dec 11, 2008
app pub date -
Sep 10, 2005
filing date -
Sep 10, 2005
priority date (Note) -
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Abstract
A water temperature calibration method for an electric kettle includes the steps of providing a temperature sensor, a microprocessor, and a control circuit; detecting an interior temperature from one of the temperatures of the water, a heating point contacting with the water, and an interior wall of the electric kettle; determining a temperature rate change by the microprocessor and comparing a current cycle of the temperature rate change with a previous cycle thereof; and sending out a control signal to the control circuit when the current cycle of the temperature rate change is close to the previous cycle thereof that a difference between the current cycle of the temperature rate change and the previous cycle thereof is minimized. Therefore, the process is adapted to accurately determine the water temperature and to cut off the heating power when the water is boiled.
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