Water electric heater

Abstract

The invention belongs to an electric heating apparatus for water, comprising a shell body and electrodes; wherein, the electrodes are contacted with the water in the shell body. The invention is characterized in that the apparatus also comprises an attraction iron, sucking coils and an elastic body; at least one electrode is a moveable electrode; the attraction iron is arranged on the moveable electrode and moves along with the moveable electrode; the sucking coils is arranged on the shell body and is close to the attraction iron; one end of the elastic body is connected with the moveable electrode and the other end thereof is connected with the shell body. A simple and reliable current stabilization system can be realized by concatenating the sucking coils into a main loop; and an electromagnetic closed-loop control system can also be established with physical quantities such as water outlet temperature, temperature of the steam heating zone and the like as the controlled objects. According to different use, the electric heating apparatus can be made into an efficient and durable water heater or steam generator with steady working condition, thus being applicable to various water quality conditions and climate conditions across the vast territory of China.

Description

technical field [0001] The invention belongs to an electric heating device for water, especially a water heater and a steam generator with adjustable electrode plates. Background technique [0002] In the prior art, there are water heaters that directly pass current into water for heating. This kind of electric water heater generally has two or two groups of electrodes immersed in water. When the working voltage is applied between the two electrodes, the current flows through the water resistance to make Electric energy is converted into heat energy. Among them, there are those using fixed electrodes, such as CN2229628 (1996-06-19), CN2230023 (1996-06-26), CN2426056 (2001-04-04), etc.; some use the relative position of adjusting two (group) electrodes to change the heating Power, such as CN21453 (1992-07-22), CN2270195 (1997-12-10), etc.; there are also electronic circuits for current regulation, such as CN2426056 (2001-04-04). In general, the resistivity of heated water i...

AI Technical Summary

Problems solved by technology

Steam generators installed in steam disinfection cabinets and sauna rooms generally use electric heating rods or electric heating tubes to boil water to produce steam. Electric heating rods or electric heating tubes are easily damaged by galvanic corrosion during work, and the maintenance workload is large; and this steam generation Most of the devices use the switch mode to control the work of the electric heating tube, the steam is sometimes absent, and the temperature fluctuates greatly.

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