Electromagnetic heating core for water heater

An excitation winding of electromagnetic heating core for water heater is sealed in insulation materials to form a winding sealing member, wherein, the winding sealing member is stood on a base by supporting feet and keeps appropriate clearance with the base. Two heating elements are arranged at both sides of the winding sealing member and kept a clearance of one to fifty millimeters with the winding sealing member. Lead-outs of the winding are placed in the supporting feet to seal the base, and a plurality of guide magnet strips are connected with the two heating elements and are fixed on the winding sealing member. The base is fixedly connected with a water storage vessel and is made a seal treatment. The winding sealing member and the heating elements are all dipped into the water in water storage vessel of the water heater and the water flows between the heating elements and the winding sealing member. The winding sealing member and the heating elements can take the shape of a cylinder or a cake. The utility model has the advantages of high electromagnet conversion efficiency; direct contact of the heating elements and the water, good heat circulation of the water, high heat conversion efficiency; small heat inertia, quick temperature rise and drop when the heating elements are connected/disconnected with the power supply; whole sealed winding, complete separation of the water and the electricity, assuring security, no easy damage; basic separation of the electricity and the heat, durability, long service life; and conducing to the industrilization production.