Electric water heater with functions of descaling and scale control

Abstract

The invention discloses an electric water heater with functions of descaling and scale control. The electric water heater comprises a housing, a liner, heating tubes, a control board, and an ultrasonic generator. The inner container is mounted inside the housing. The heating tubes are disposed inside the inner container and fixedly installed at one end of the inner container. The ultrasonic generator is electrically connected with the control board. The ultrasonic generator is fixedly mounted at the top of the inner container and arranged above the heating tubes. One end of the ultrasonic generator is inserted into the inner container, and the other end of the ultrasonic generator is arranged outside the inner container, so that ultrasonic wave generated by the ultrasonic generator cover the heating tubes. Scale can be removed by transmitting the ultrasonic wave with the same frequency as the scale to resonate the scale adhering to the heating tubes; in addition, under the cavitation action of the ultrasonic wave, formation of the scale on the heating tubes and the inner container can also be prevented and water is sterilized and purified, so that heat exchange efficiency of the heating tubes is improved, energy is saved, maintenance cost is lowered, and drinking water sanitation is ensured.

Description

technical field [0001] The invention relates to the technical field of electric water heaters, in particular to an electric water heater with functions of descaling and antiscaling. Background technique [0002] Daily water contains calcium and magnesium ions, and when heated, calcium and magnesium ions are easy to combine with acid radical ions in the water to form insoluble substances, which stick to the inner tank and heating pipe of the electric water heater, thus forming scale. Due to the high temperature of the heating tube, scale is more likely to be formed on its outer surface, which will greatly affect the heating performance of the heating tube, reduce the heat exchange efficiency of the electric water heater, and even cause the problem of tube burst. In response to the problems referred to above, electric water heaters that adopt ultrasonic devices to prevent and remove scale have appeared on the market. However, in the existing electric water heaters with ultras...

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Problems solved by technology

However, in the existing electric water heaters with ultrasonic devices, the ultrasonic devices are mostly placed in the cold water area at the left and right ends of the inner tank, and the emitted ultrasonic waves cannot be concentrated on the heating tubes, and cannot effectively cover the area where the heating tubes are located. Practice has proved that the ultrasonic device in this arrangement cannot achieve effective descaling and anti-scaling effects, so it cannot solve the problem of low heat exchange efficiency due to fouling of the heating tube

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