INSTANTANEOUS HOT WATER DISCHARGE DEVICE

To provide an instantaneous hot water discharge device capable of enhancing energy-saving performance more.SOLUTION: A stored hot water temperature control part 47 which controls the temperature of hot water in a hot water storage tank 21 of an instantaneous hot water discharge device 20 is configured to: determine, in hot water discharging by a hot water discharging plug 1b executed in a plurality of time zones obtained by sectioning one day, target stored hot water temperatures in the respective time zones on the basis of detection data on a temperature Tin and a flow rate of water supplied to the instantaneous hot water discharge device 20 detected respectively with a temperature sensor 34 and a flow rate sensor 35 in a predetermined period right after opening of a hot water discharge plug 1b in hot water discharging by the hot water discharge plug 1b executed in the time zones in the past; and control the temperature of hot water in the hot water storage tank 21 to the determined target stored hot water temperatures.SELECTED DRAWING: Figure 1 【課題】省エネ性能をより一層高めることができる即時出湯装置を提供する。【解決手段】即時出湯装置２０の貯湯タンク２１内の湯の温度を制御する貯湯温度制御部４７は、一日を区分する複数の時間帯のそれぞれにおける目標貯湯温度を、過去に該時間帯で実行された出湯栓１ｂでの出湯時に、出湯栓１ｂの開栓直後の所定期間で温度センサ３４及び流量センサ３５より各々検出された即時出湯装置２０への入水温度Ｔin及び入水流量のそれぞれの検出データに基づいて決定し、決定した目標貯湯温度に貯湯タンク２１内の湯の温度を制御する。【選択図】図１