Electric blanket for preventing from thermal control failure

Abstract

The invention relates to an electric blanket for preventing from thermal control failure. The technical scheme of the electric blanket comprises the steps of: directly employing a heat-sensitive diaphragm (7) as a temperature sensing device, employing a right tail connection prevention heating wire (5) at the outer portion of the film and a left head connection prevention heating wire (6) at the inner portion of the film which are parallel to each other as temperature sensing wires, clamping and padding the heat-sensitive diaphragm (7) between the two heating wires, connecting two AC input ends X1 and X2 of an overheat protection control circuit (8) avoiding flash fire and failure in series in the fair current between the head end of a certain heating wire and the tail end of the other heating wire, and controlling the on-off of the heating current in the heating wires by employing an inlet K1 and an outlet K2 of a switch in the overheat protection control circuit (8) avoiding flash fire and failure. The electric blanket for preventing from thermal control failure has an overheat protection control function and a protection control function for avoiding breakage and flash fire of the heating wires, can prevent from the thermal control failure when faults are generated, is fast in response speed, ensures the effectiveness when it is needed to switch off the AC power source and ensures the personal and property safety.

Description

technical field [0001] The invention belongs to the field of household appliances or electric heating control, and particularly relates to an electric heating blanket that is absolutely safe in the whole process of use, whether it is in a normal state or an abnormal fault state, which can completely prevent flash fire, prevent overheating protection failure, and prevent runaway. , referred to as: an electric blanket to prevent heat control failure. Since the electric blanket is a flexible electric heating body, the present invention is also particularly suitable as a Bian controller for other electric heating bodies. Background technique [0002] The electric blanket is the preferred heating appliance for warming the bed when the weather is cold. It not only makes people feel warm and comfortable when sleeping, and makes it easy to fall asleep, but also the infrared rays and low-frequency electromagnetic fields it radiates have certain physical therapy and health care effect...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to design an electric heating temperature controllable and overheating protection, electric heating wire (wire) break arc protection function, and no matter in normal or abnormal state, the overheating protection function of the whole line is always effective, and the whole process prevents out of control. To ensure the safety of the electric blanket controller; to solve the technical problems of the existing electric blanket in the past when the abnormal failure caused the high temperature out of control to cause the fire accident, and completely eliminate the safety hazards and defects of the existing electric blanket in the past

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