An electric heater liner contact thermostat

Abstract

The invention relates to the technical field of electric heater vessel temperature control elements, in particular to an electric heater inner container contact thermostat. The electric heater inner container contact thermostat comprises a temperature sensing lid, an insulating cup body, a supporting spring and an encapsulating bottom lid, the temperature sensing lid is encapsulated on a cup opening of the insulating cup body, a thermistor and a hot melting resistor which abut against the temperature sensing lid are arranged on the upper end face of the insulating cup body, the insulating cupbody is internally provided with a reed switch, and the reed switch is in parallel connection with a leading line of the thermistor; the encapsulating bottom lid is provided with a permanent magnet for triggering the reed switch, and a screen shielding sheet is arranged between the reed switch and the permanent magnet and is fixed to the insulating cup body. The electric heater inner container contact thermostat is reasonable in structure, an inner container of an electric heating vessel is pressed down to drive the insulating cup body to move downwards, after abutting against the permanent magnet, the shielding sheet inside is temporarily magnetized, and the reed switch at the upper portion is triggered to open a parallel connection branch circuit, so that the thermistor receives the inner container temperature to control the heating process; a power source can be cut off by the thermistor to avoid a fire hidden danger, and safety coefficients of the electric heating vessel can be effectively increased.

Description

technical field [0001] The invention relates to the technical field of temperature control elements for electric heating vessels, in particular to an electric heater liner contact temperature controller. Background technique [0002] The temperature sensor is a temperature-sensitive controller with the functions of automatic action protection, permanent disconnection without power failure, and self-reset function after power failure. It has a wide range of applications and flexible use, which can protect the safety of electrical circuits and avoid damage caused by excessive operating temperatures. Temperature sensors are widely used in the field of small household appliances in electric heating containers such as smart rice cookers and pressure cookers. In addition to realizing automatic heating regulation through temperature detection, the safety requirements for overheating protection are also mandated by such as GB4706.1 safety standards for household appliances. [0003...

AI Technical Summary

Problems solved by technology

But when the temperature sensor fails or the microprocessor of the control board fails, the inner pot is taken out and the power is not cut off, and the dry heating temperature may rise very high, which may burn the rice cooker or cause a fire, which poses a safety risk

Images