A new cooking stove heating device with metal pot liner detection function

Abstract

The invention discloses a novel stove heating device with a metal pot container detection function. The novel stove heating device comprises a stove base, a heater, a controlled LC vibration module for detecting whether a metal pot container is placed on the stove base or not and a heating control module for controlling the fire power of the heater to be reduced when it is detected that no metal pot container is placed on the stove base. A drive signal input end of the controlled LC vibration module is electrically connected with a vibration drive module, and an magnitude signal detection end is electrically connected with a voltage detection module, wherein the voltage detection module is used for detecting whether the output voltage value of the controlled LC vibration module deviates the preset value or not so that the heating control module can judge whether the metal pot container is placed on the stove base or not conveniently. A control signal input end of the vibration drive module is connected with a vibration control signal output end of the heating control module. A voltage detection signal output end of the voltage detection module is electrically connected with a voltage detection signal input end of the heating control module. The novel stove heating device is simple in structure, easy to implement, precise in detection, safe and reliable and good in practicability.

Description

[technical field]

[0001] The invention relates to a novel cooker heating device with the detection function of metal pot inner. [Background technique]

[0002] At present, there are two main methods of pot detection for general cookers such as induction cookers: current transformer pot detection and pulse circuit pot detection. The principles are as follows:

[0003] 1. The current transformer detects the pot by using the pot detection transformer for current mutual induction, and the voltage that changes synchronously with the primary current is induced by the secondary side of the pot detection transformer, and sent to the corresponding function pin of the CPU for detection. When there is no pot, the line The oscillation time of the plate and the resonant capacitor is long, the energy attenuation is slow, the primary current flowing through the pot detection transformer is less, the secondary voltage of the pot detection transformer is low, and the CPU judges that there is...

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