Pot dry burning detection method and device and electromagnetic appliance

Abstract

The embodiment of the invention provides a pot dry burning detection method and device and an electromagnetic appliance. The method comprises the steps of acquiring the current conduction width PPG and the current heating power of an IGBT of the electromagnetic appliance; and according to the current PPG and the current heating power, detecting whether a pot heated by the electromagnetic appliance is in dry burning or not. When the pot is in dry burning, the temperature rises rapidly, the increased temperature is not within the normal heating temperature range of the pot, and the original balance between the pot and a magnetic field is damaged rapidly. Therefore, when the pot is in dry burning, the heating power of the electromagnetic appliance and the PPG value can change rapidly. Therefore, compared with the temperature detected by a temperature sensor, whether the pot is in dry burning or not can be rapidly and accurately detected through the heating power and the PPG.

Description

technical field [0001] The embodiments of the present invention relate to the technical field of home appliances, and in particular, to a method and device for detecting dry cooking of a pot, and an electromagnetic appliance. Background technique [0002] The temperature sensor of the existing induction cooker is placed under the ceramic panel, and the temperature measurement will cause a relatively serious lag. When the pot burns dry, the bottom of the pot rises rapidly within a few seconds. to the temperature of the pan, therefore, the induction cooker does not know that the pan has been boiled dry. Therefore, the hob will continue to heat up. When the temperature at the bottom of the pot continues to be transmitted to the temperature sensor, and the temperature sensor detects that the temperature at the bottom of the pot is too high and the induction cooker stops heating, the pot has actually been dry-burned for a period of time, which will cause the food in the pot to b...

AI Technical Summary

Problems solved by technology

When the temperature at the bottom of the pot continues to be transmitted to the temperature sensor, and the temperature sensor detects that the temperature at the bottom of the pot is too high and the induction cooker stops heating, the pot has actually been dry for a period of time, which will cause the food in the pot to be damaged at high temperature, and may also cause High temperature damages the parts inside the induction cooker

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