Temperature control adjustable electric water heater

Abstract

The invention relates to the technical field of water heaters, and discloses a temperature control adjustable electric water heater. The electric water heater comprises a water heater box body, a heating rod, a communicating pipe and a water outlet pipe, a placing cavity is formed in the position, located on the lower side of the heating rod, in the water heater box body, and a sliding resistor is fixedly arranged in the placing cavity. According to the electric water heater, by designing the placing cavity, the sliding resistor, a heat conduction rod, a movable cavity and a gas cavity, the temperature in air is guided into the movable cavity through the heat conduction rod, so that the volume of mercury in the movable cavity is expanded, the mercury enters a gas bag in the gas cavity through a through hole due to the expansion of the mercury, the volume of the gas bag is expanded, the gas bag expands to extrude gas in the gas cavity into the sliding resistor through a gas hole, so that a sliding contact in the sliding resistor is promoted to move, so that the resistance value of the sliding resistor is increased, the increase of the resistance value of the sliding resistor promotes the reduction of the current introduced into the heating rod, so that the water temperature is decreased, and scalds caused by too high water temperature when people use the water heater in summer can be avoided.

Description

technical field [0001] The invention relates to the technical field of water heaters, in particular to an electric water heater with temperature control and regulation. Background technique [0002] A water heater refers to a device that raises the temperature of cold water into hot water within a certain period of time through various physical principles. According to the principle, it can be divided into electric water heaters, gas water heaters and solar water heaters. It has brought great convenience and has become an indispensable household appliance in people's life. [0003] Due to the difficulty of obtaining energy, electric water heaters are the most widely used. However, the existing electric water heaters usually heat cold water and store them in a water storage tank. People only need to turn on the hot water when using them. Hot water can be obtained by switching on and off the switch. Due to the high power of the electric water heater and the high temperature o...

AI Technical Summary

Problems solved by technology

[0004] Aiming at the shortcomings of existing electric water heaters in the use process proposed in the background technology, the present invention provides a temperature-controlled electric water heater, which has the advantage of being able to adjust the water temperature of the water heater as the room temperature changes, and solves the above-mentioned background technical issues raised in technology

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