Heat radiating structure and temperature control method

Abstract

This invention discloses a heating structure and its temperature controlling method, which mainly includes a heating line and a controller that are connected, wherein the heating line is arranged with the PTC component and short path which are obstructed with an insulated fusible layer; when the users arranges the heating temperature, then the current conducts the PTC component to add temperature, and it changes the sine wave signal of the input AC power phase shaping circuit and the DC power phase prolonging shaping circuit into DC square wave signal, and the microprocessor checks the phase moving change of the twice shaping circuit to control the on-off of the trigger circuit, which can make PTC component add or lower its temperature continuously to keep the heating line on a certain working temperature. This invention is applied in the heating device such as the heating stove, foment carpet and so on.

Description

technical field [0001] The invention relates to a heating structure and a temperature control method thereof, in particular to a heating structure using a PTC component, and using the characteristics of the PTC component to make the DC square wave respectively converted by the phase shaping circuit of the AC power supply and the phase delay shaping circuit of the AC power supply. The signal generates a phase shift to control the switch of the trigger circuit in real time to heat or cool down the PTC component, so that the heating wire can be kept at a certain working temperature; it is suitable for heating devices such as electric furnaces and heating blankets. Background technique [0002] Heating structures have been widely used at present, such as Figure 7 As shown, it is a fairly common heat pad structure. A group of upper and lower conductive plates a1 are mainly installed in a set of bags, and a plurality of ceramic resistors a2 are sandwiched between the two conductiv...

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Problems solved by technology

[0007] 1. Most of the known technologies need to set two circuits of heating and detection in the heating pad or heating structure at the same time, and four contact parts (connecting to the two circuits respectively) are extended outwards, and the heating and comparison circuits need to be connected respectively , the configuration of electronic components is complicated, which will increase the cost of manufacturing and increase the failure rate

[0008] 2. Regardless of whether a single PTC alloy is used to achieve the two functions of heating and detection at the same time, or to achieve the above functions through two different circuits, when the temperature control device of the heating structure is damaged, the heating wire will continue to heat up, and there is There is a risk of fire; for this phenomenon, the above-mentioned known technologies cannot provide safety guarantees by virtue of the characteristics of PTC components

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