Electric water heater

The utility model relates to an electric water heater, and the electric water heater comprises a heating device, a water level controlling device, a controlling circuit and a casing; the heating device comprises an upper water collector, a lower water separator, and at least two heating pipes; the heating pipes are fixed between the upper water collector and the lower water separator in a communication way; the water level controlling device is respectively connected with the upper water collector and the lower water separator through pipelines; the water level controlling device comprises a water tank, and a water level controller; the bottom of the water tank is provided with a water inlet pipe and a connecting pipe connected with the lower water separator; the controlling circuit adopts the relay controlling way; the controlling circuit comprises three branch circuits connected in parallel; the first branch circuit comprises heating bodies being connected in parallel and supplying the heat to the heating pipe, and two moving contacts of the relay which are respectively connected with the heating bodies in series; the second branch circuit comprises a manual button switch connected with a relay coil in series, an ambient temperature fuse, an over temperature safety switch, an upper magnetic float controlled switch and a lower magnetic float controlled switch; the third branch circuit is a solenoid valve circuit controlling the water inlet. The electric water heater has the advantages of quick heating, power saving, and long service life.