Rapid electric auxiliary heating device for solar water heater

The invention discloses a rapid electric auxiliary heating device for a solar water heater. The heating device comprises an inner container of the water heater, a water inlet pipe, a water outlet pipe and a heat accumulation guide flow cylinder, wherein the water inlet pipe and the water outlet pipe are both communicated with the inner cavity of the inner containner; the inner cavity of the inner container is provided with an electric heating tube; the heat accumulation guide flow cylinder is sleeved on the electric heating tube; the heat accumulation guide flow cylinder is provided with a water outlet; and the water outlet is positioned at the side of a water inlet port of the water outlet pipe. The heating device provided by the invention has the advantages that on the basis of not increasing the power of a heating pipe, the effect of rapid hot water generation of the water heater is realized, the structure is simple, the heat accumulation effect of hot water is good, and rapid high hot water output volume is reached; and when hot water is not used,, the temperature of the hot water at the middle and upper part of the inner container rises through the heat exchange of the hot water gathered close to the water outlet pipe to perform preheating, thus semi-inner container heating can be realized, and the use performance of an electric water heater or the solar water heater is improved greatly.