Water storing device of electric water heater

The invention discloses a water storing device of an electric water heater, comprising a water storing cylinder, an electric heater and a water inlet and outlet tube. The electric heater is arranged outside the water storing cylinder, the water inlet and outlet tube is connected with a water storing tube and the electric heater, and the water storing cylinder consists of a plurality of layered and communicated flow guide layers. The flow guide layers comprise a plurality of flow guide grooves whirled around the centre of a horizontal partition board, wherein an outer edge flow guide groove of a first flow guide layer is communicated with an outer edge flow guide groove of a second flow guide layer, a guide flow groove in the centre of the second flow guide layer is communicated with a flow guide groove in the middle of a third flow guide layer, an outer edge flow guide groove of the third flow guide layer is communicated with an outer edge flow guide groove of a fourth flow guide layer, and finally the outer