Scale-free cleaning-free electric water heater

Abstract

The invention discloses a scale-free cleaning-free electric water heater. The scale-free cleaning-free electric water heater comprises a heating interlayer (3) between an inner-layer water tank (1) and an outer-layer water tank (2), an electric heating rod (4) in the heating interlayer (3) is positioned outside the inner-layer water tank (1), a cold water inlet (5) arranged on the inner water tank(1), the inner water tank (1) is connected with a water inlet valve (8) and a filter screen (9); a water outlet is formed in a cold water pipe (6); a hot water outlet (10) is formed in the inner layer water tank (1), a water outlet pipe (11) connected to the hot water outlet (10) in the upper part is connected with a hot water outlet, and the water outlet pipe (11) extends out of the outer-layerwater tank (2); a water inlet (12) is arranged on one side of the inner-layer water tank (1), the inner-layer water tank (1) is in communication with the heating interlayer (3); the inner-layer watertank (1) is provided with an air outlet (15) of the outer-layer water tank (2), and the electric heating rod (4) is used for heating the heating interlayer (3) and then to transfer the heat to the inner-layer water tank (1), and the water in the inner-layer water tank (1) is heated.

Description

technical field [0001] The invention relates to a scale-free and cleaning-free electric water heater. Background technique [0002] At present, when the traditional electric water heater is heated in the water tank, the high temperature on the electric heating rod reacts with minerals such as calcium and magnesium in the water to produce a large amount of scale, which attaches to the electric heating rod or settles at the bottom of the water tank to breed bacteria, pollutes water quality, and damages human health. Healthy, the scale attached to the surface of the electric heating rod will wrap the electric heating rod as a whole, the heat dissipation will be slow, the thermal efficiency will be reduced, the energy will be wasted, and the heating time will be prolonged, which will seriously cause the electric heating rod to burn out due to high temperature and affect the normal use. Therefore, the electric water heater must be replaced every year. To clean the scale on the wa...

AI Technical Summary

Problems solved by technology

[0002] At present, when the traditional electric water heater is heated in the water tank, the high temperature on the electric heating rod reacts with minerals such as calcium and magnesium in the water to produce a large amount of scale, which attaches to the electric heating rod or settles at the bottom of the water tank to breed bacteria, pollutes water quality, and damages human health. Healthy, the scale attached to the surface of the electric heating rod will wrap the electric heating rod as a whole, the heat dissipation will be slow, the thermal efficiency will be reduced, the energy will be wasted, and the heating time will be prolonged, which will seriously cause the electric heating rod to burn out due to high temperature and affect the normal use. Therefore, the electric water heater must be replaced every year. To clean the scale on the water tank and electric heating rod

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