Electric food warmer and method thereof for automatically identifying water state after dry burning

Abstract

The invention discloses an electric food warmer and a method thereof for automatically identifying a water state after dry burning. The electric food warmer comprises a pot body, a cover and an liner arranged in the pot body, wherein a heating device, a bottom temperature measuring device for detecting the temperature of the liner and a control device are arranged in the pot body; the control device comprises a main controller, and a counter, a temperature storage, a measurement time storage, a decision value storage, a temperature variation storage and a timer, which are connected with the main controller respectively; the output end of a temperature sensor is connected with the input end of the main controller; and the output end of the main controller is electrically connected with a heating device. Whether water adding action is performed after dry burning is judged according to the velocity of variation of the measured temperature, an alarm is given, and the electric food warmer is converted into a safety mode; and thus, a safety hazard caused by long-term dry burning is avoided, and the phenomenon that food is undercooked as the electric food warmer enters the safety mode immediately upon the detection of drying burning is eliminated. The method disclosed by the invention is simple and accurate in measurement, and is suitable for electric cookers, electric slow cookers, electric fire pots and other electric food warmer products.

Description

technical field [0001] The invention belongs to the transformation of electric heating pot technology including electric rice cooker, electric stew pot and other products, and particularly relates to an electric heating pot and a method for automatically identifying the state of adding water after dry boiling. Background technique [0002] Various computer-type electric heating pots currently on the market are generally equipped with a dry state detection. If a dry state is detected when cooking food, it will immediately enter a heat preservation state to prevent danger from being too high. However, users sometimes put less water or forget to add water when cooking food. For example, the electric heating pot immediately enters the heat preservation after detecting dry burning, which will cause the cooked food to be undercooked. [0003] In addition, some electric heating pots on the market are judged to be in the state of adding water after dry heating according to the tempe...

AI Technical Summary

Problems solved by technology

However, users sometimes add less water or forget to add water when cooking food. For example, the electric hot pot immediately enters heat preservation after detecting dry cooking, which will cause the cooked food to be undercooked.

[0003] In addition, some electric heating pots on the market are judged to be in the state of adding water after dry heating according to the temperature of the bottom of the inner pot being lower than a certain temperature value. It is not the same, the amount of water added is also very different, and the ambient temperature is different. Based on the above conditions, it is very unscientific and easy to misjudge by judging a single temperature point to judge whether there is water adding action, which will affect the quality and performance of the product.

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