Anti-dry protection device for electromagnetic oven cooker

Abstract

The invention relates to an anti-dry protection device for an electromagnetic oven cooker, comprising a light-transmitting panel (1), a coil disc (2), a main control plate (3) and a base (4), wherein the coil disc (2) and the main control plate (3) are arranged in the base (4). The anti-dry protection device is characterized by also comprising at least one photosensitive element (5) which is capable of inducting the dry and the reddening of the cooker to generate resistance change, is arranged in the base (4) by a photosensitive element support (6), is positioned below a heating zone of the light-previous panel (1) and is electrically connected with the main control plate (3). The anti-dry protection device creatively adopts the photosensitive element to judge the heating condition of theheated cooker on the electromagnetic oven cooker so as to prevent and control the dry burning of the cooker, therefore, the induction is fast, the precision is high, and the protection device has no signal delay, is not influenced by the installation environment, and can timely and accurately conduct the dry judgment and protection on the cooker.

Description

technical field [0001] The invention relates to an anti-dry-burning protection device for an electromagnetic cooker pot, which belongs to the improved technology for the safety protection of an electromagnetic cooker. Background technique [0002] At present, under the ceramic panel of the commercially available induction cooker, there are generally various ink screen printing patterns, and the temperature resistance of the ink is generally around 300 degrees. It affects the appearance, and there is a great potential safety hazard. If the protection is not timely, it may cause a fire due to the fire of the ink. [0003] Most of the existing anti-dry protection schemes are realized by the thermistor attached to the lower surface of the ceramic panel. Since the ceramic panel has a certain heat conduction process, it has a great influence on the accuracy of the thermistor's temperature measurement. As a result, the thermistor cannot accurately and quickly detect the temperatur...

AI Technical Summary

Problems solved by technology

[0002] At present, under the ceramic panel of the commercially available induction cooker, there are generally various ink screen printing patterns, and the temperature resistance of the ink is generally around 300 degrees. It affects the appearance, and there is a big safety hazard. If the protection is not timely, it may cause a fire due to the fire of the ink

[0003] Most of the existing anti-dry protection schemes are realized by the thermistor attached to the lower surface of the ceramic panel. Since the ceramic panel has a certain heat conduction process, it has a great influence on the accuracy of the thermistor's temperature measurement. As a result, the thermistor cannot accurately and quickly detect the temperature change at the bottom of the pot; at the same time, the thermistor itself has a certain signal delay, and cannot provide a control signal for the control system of the induction cooker in time; When dry-burning or other overheating conditions, the bottom of the pot will be in partial contact with the ceramic panel due to heat deformation, which will also cause the position of the thermistor to be out of contact with the overheated bottom of the pot and affect the accuracy of the thermistor detection

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