Thermos bottle rapid-heater

The utility model discloses a quick heater used for a thermos bottle, relating to a daily heating apparatus, in particular to the design and manufacturing technique of the quick heater which can heat water in the thermos bottle. The utility model consists of an outer casing, an electric heating tube and a controlling component. The electric heating tube is arranged in the outer casing, and a temperature control switch is arranged in an electric heating circuit. An air intake is arranged at the bottom of the outer casing, and an air relief is arranged on the side wall of the outer casing. A coupling rod is arranged on the upper part of the air intake, and an iron piece is arranged on a shaft shoulder end of the coupling rod. A magnet is sleeved at the outside of the coupling rod and is arranged on a boss of the outer casing. A power supply switch is arranged in a circuit of the electric heating tube, and a switch arm of the power supply switch touches the shaft shoulder of the coupling rod. The thermos bottle is filled with water, and the quick heater is put into the thermos bottle, and when the power supply is switched on, the quick heater begins to run. When the water boils, a large quantity of air in thermos bottle enters the outer casing from the air intake and then is vented from the air relief, and then the coupling rod is raised by air flow and the coupling rod is lifted up under the attracting force of the magnet, and when the shaft shoulder of the coupling rod touches the switch arm, the power supply is cut off with the prompt action, which can guarantee that the power-cutting action for the quick heater can be executed.