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    • 158. 发明授权
    • Hot water supply system
    • 热水供应系统
    • US4935603A
    • 1990-06-19
    • US308389
    • 1989-02-09
    • Keiichi IwamotoKiyoshi Watanabe
    • Keiichi IwamotoKiyoshi Watanabe
    • F24H1/18F24D19/10G05D23/24
    • F24D19/1051G05D23/1934G05D23/24Y02B30/762
    • A hot water supply system having a plurality of electric heaters arranged at vertically displaced positions in the hot water tank, and a controller for controlling the temperature of the water based on the signal supplied by a plurality of water-temperature sensors, by controlling the electric currents through the heaters in three different modes in such a way that the upper and lower heaters are turned on individually in a first mode; only the upper heater is turned on in a second mode; and only the upper heater is turned on at a low preset temperature in a third mode to prevent the water from freezing, supplying necessary and sufficient amount of hot water from the upper portion of the tank and feeding water from the lower portion of the tank, the system providing efficient electric current control of the heater depending upon the demands and ambient temperature conditions, thereby allowing efficient utilization of energy and making the hot water supply system superb.
    • 一种热水供给系统,其具有布置在所述热水箱中的垂直位移位置处的多个电加热器,以及控制器,用于基于由多个水温传感器提供的信号来控制所述水的温度, 以三种不同模式通过加热器的电流,使得上和下加热器以第一模式单独接通; 只有上加热器在第二模式下打开; 并且在第三模式中只有上加热器在低预设温度下打开以防止水冻结,从罐的上部供应必要和足够量的热水并从罐的下部供水, 该系统根据需要和环境温度条件提供加热器的有效电流控制,从而允许有效利用能量并使热水供应系统变得优良。