Gas quick water heater and device for reducing water cut-off temperature rise

The utility model discloses a rapid gas water heater which comprises a water heater body, a heat exchanger installed in the water heater body, a cold water inlet pipe and a hot water outlet pipe. Thecold water inlet pipe and the hot water outlet pipe are connected with the heat exchanger. The water heater is characterized in that the hot water outlet pipe is provided with a water cut-off pre-flowwater mixing device, and the water cut-off pre-flow water mixing device comprises a telescopic water storage tank communicated with the hot water outlet pipe and a compression spring connected with the telescopic water storage tank and used for controlling the capacity of the telescopic water storage tank. Pre-flowing is carried out when the gas quick water heater stops using water, and water mixing is carried out when the gas quick water heater uses water again, so that the water temperature in the hot water outlet pipe is constant, and the problems of water stopping and temperature rising are solved from the fundame