Thick film heating tube anti-local-dry-burning structure and method

Abstract

The invention discloses a thick film heating tube anti-local-dry-burning structure and method. The thick film heating tube anti-local-dry-burning structure comprises a controller, a metal base material tube body, a heating body and an insulation layer arranged between the heating body and the metal base material tube body, wherein the controller is electrically connected with the metal base material tube body and the heating body. The thick film heating tube anti-local-dry-burning method comprises the following steps: a) the controller collects passing-through current of the insulation layer; b) the controller carries out processing and analysis on the current signal and judges the temperature of the insulation layer, the value of current passing through the insulation layer being matched with the temperature of the insulation layer, the larger the current value being, the higher the temperature of the insulation layer being; and c) when the temperature of the insulation layer is larger than 300 degrees, the controller stops supplying power for the heating body. The anti-local-dry-burning structure and method can quickly and conveniently detect whether the local-dry-burning problem exists, thereby, on one hand, facilitating picking out unqualified products during production, and on the other hand, ensuring safety of a user effectively.

Description

Technical field [0001] The invention relates to the technical field of thick film heating tubes, in particular to a thick film heating tube anti-local dry burning structure and a method thereof. Background technique [0002] As a new heating method, thick film heating technology is gradually being applied to various electric heating devices. For the thick film heating element, the thick film resistor paste is energized to generate heat, thereby realizing the heating function. [0003] Thick film heating technology is more and more widely used in real life because of its speed and efficiency, and there are various forms of thick film water heaters in the prior art, such as thick film heating tubes. [0004] It should be further pointed out that for thick film heating tubes, due to the difference in the production process, the thick film heating tube has a local high temperature phenomenon (that is, local dry burning), which will directly affect the life and safety of the heating tube...

AI Technical Summary

Problems solved by technology

[0004] It should be further pointed out that for the thick film heating tube, due to the difference in the production process, the thick film heating tube has a phenomenon of local high temperature (that is, local dry burning), which will directly affect the life and safety of the heating tube; however , the existing technology is difficult to detect this situation, especially when the user is using it, there is no way to detect it at all

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