HOT WATER STORAGE TYPE WATER HEATER

• Main Authors: OGAKI YASUYOSHI, KAZAMA SHIRO, TAKEUCHI NORITO, WATANABE YUKA
• Format: Patent
• Language: English; Japanese
• Published: 07.10.2021
• Subjects: BLASTING; FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEATGENERATING MEANS, IN GENERAL; HEATING; LIGHTING; MECHANICAL ENGINEERING; RANGES; VENTILATING; WEAPONS

To provide a hot water storage type water heater that is advantageous in suppressing power purchase during a daytime.SOLUTION: A hot water storage type water heater includes control means and a hot water supply mixing valve. The control means has a hot water setting temperature mending function which executes a nighttime boiling-up operation performed by using power supplied from a commercial power supply in the nighttime and a daytime boiling-up operation performed by using power generated by a photovoltaic power generation device in the daytime, receives next day weather report about weather of a daytime of the next day and weather information on the day about weather of a daytime on the day as weather report information, executes the nighttime boiling-up operation on the night so as to reduce the power consumption of the nighttime boiling-up operation on the night in the case that solar radiation on the next day in weather information on the next day is estimated to be relatively more than a case where the solar radiation on the next day is estimated to be relatively less, and mends a value of a hot water setting temperature so as to be lower than the present value in the case that estimated weather of weather information on the day is compared with estimated weather of weather information on the next day to find that the weather information on the day is estimated to have solar radiation less than the weather information on the next day does.SELECTED DRAWING: Figure 2 【課題】昼間の買電を抑制する上で有利になる貯湯式給湯装置を提供する。【解決手段】貯湯式給湯装置は、制御手段と、給湯混合弁とを備える。制御手段は、夜間に商用電源から供給される電力を用いて行う夜間沸き上げ運転と、昼間に太陽光発電装置により発電された電力を用いて行う昼間沸き上げ運転とを実施し、天気予報情報として、翌日の昼間の天気に関する翌日天気情報と、当日の昼間の天気に関する当日天気情報とを受信し、翌日天気情報が、翌日の日射が比較的多い予想である場合には、翌日の日射が比較的少ない予想である場合に比べて、当夜の夜間沸き上げ運転の消費電力量が少なくなるように当夜の夜間沸き上げ運転を実施し、当日天気情報の予想天気と翌日天気情報の予想天気とを比較し、当日天気情報が翌日天気情報よりも日射が少ない予想である場合には、給湯設定温度の値を、現在の値よりも下げるように修整する給湯設定温度修整機能を有する。【選択図】図２