| Water heater is one of important home appliances, almost every family have one water heater. Traditional water heater can be classified into two types, one is gas water heater, the other is electric water heater. In recent years, the new type solar water heater develops very rapid, and has occupied quite a few rate in water heater market. As science and technology developing, new type waterheater was developed constant, electromagnetism vortex water heater is one typical water heater among these water heater. However, owing to all kind of reason, no electromagnetism vortex water heater can be developed successfully. So the application of electromagnetism vortex in developing water heater is not very successful. On the other hand, electromagnetism vortex has been investigated deeply in foreign country or domestic, and the induction cooker has been manufactured, which was very popular in appliances market. Now many home appliances manufacturers produce induction cooker. The induction cooker poses characters, such as safety, high efficiency, save energy and respond rapid in heating up. If applying the induction cooker technology to develop a new type electromagnetism vortex water heater, it would keep the characters of the induction cooker. So the electromagnetism vortex water can overcome the defect such as giving off poison gas, which pollutes environment and does harm to people health. The new type electromagnetism vortex water heater will be safer than traditional ones, because the electric and water is separated. And the water heater does not give off poison gas. Obviously, to develop this kind electromagnetism vortex water heater is very significant.The electromagnetism vortex water heater that was developed in this task has the most obviously character, that the design of flume of water heater is creative. On the choice of material, we compared some sorts of material through experiment. First we used stainless steel tube-board and galvanization tube-board to do the vortex heating experiment. We found the heating effect in galvanization tube-board is better than in stainless steel tube-board. It goes against the structure requirement with tighten, and would make the weight of water heater increase if choosing the former. And then we used the armor plate to do the experiment, we found that the thin silicon steel board which poses high magnetism conductance rate is far better than the normal steel board. Choosing the thin silicon steel board to be the vortex heating board material can not only decrease the weight of water heater and make the water heater smaller, but also accord with the tending to skin effect. So the thin silicon steel board is the bestmaterial in this task of developing electromagnetism vortex water heater. On the design of structure, we adopted two pieces of silicon steel board to install inside the flume, each part encounters the excitation loop outside the flume. Water can flow through two surfaces of each silicon steel board. The juncture of between two boards of the flume box was agglomerated( ) with stickiness first. Then the top and the bottom board of the box were tighten with bolts. In order to insure pressurize, the edges and corners of the flume box should be agglomerated with right-angle aluminum material.In the part of the water heater circuit design and analysis, base on the induction cooker circuit, the main circuit, control circuit, protection circuit were mainly analyzed. And some circuits those do not relate close to the water heater circuit were ignored. So these circuits can be simplified.Due to the power output of the electromagnetism vortex water heater has direct relation to the interval between the vortex board and the excitation loop plane. The smaller interval is the larger power output is. So in order to be the largest power output, the structure should be as small as possible. As far as the instantaneous heating electromagnetism vortex water heater is concerned, the power which the excitation device outputs is too small, so we adopt two e...
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