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    • 2. 发明授权
    • Refrigeration appliance with pulsed defrost heater
    • 带脉冲除霜加热器的制冷设备
    • US06694754B1
    • 2004-02-24
    • US10348054
    • 2003-01-20
    • Dennis G. SchenkJohn R. WisnoskiDavid A. DiekmannSteven J. Kuehl
    • Dennis G. SchenkJohn R. WisnoskiDavid A. DiekmannSteven J. Kuehl
    • F25D2106
    • F25D21/006F25B2600/0253F25B2600/112F25B2600/23F25D17/065F25D2400/04F25D2500/04F25D2700/10F25D2700/12F25D2700/122Y02B40/32
    • A refrigeration appliance is provided having a first compartment to be cooled, at least one evaporator in heat transfer association with the first compartment, a defrost heater associated with the evaporator, a temperature sensor associated with the evaporator, and a control circuit. The control circuit is arranged to selectively energize the defrost heater during a defrost cycle, selectively deenergize the defrost heater during the defrost cycle, generate a timing signal while the defrost heater is deenergized during the defrost cycle, and the control circuit is arranged to receive an input from the temperature sensor, and an accumulation of time from the timing signal. A method of operating such a refrigeration appliance includes operating the evaporator to cool the first compartment, initiating the defrost cycle to defrost the evaporator, repeatedly energizing the defrost heater for a first time period and deenergizing the defrost heater for a second time period during the defrost cycle, and terminating the defrost cycle after said evaporator has reached a predetermined optimum temperature.
    • 提供了一种制冷装置,其具有要冷却的第一隔室,与第一隔室相关联的至少一个蒸发器,与蒸发器相关联的除霜加热器,与蒸发器相关联的温度传感器和控制电路。 控制电路设置成在除霜循环期间选择性地激励除霜加热器,在除霜循环期间选择性地使除霜加热器断电,在除霜循环期间除霜加热器断电时产生定时信号,并且控制电路被布置成接收 来自温度传感器的输入,以及来自定时信号的时间累积。 一种操作这种制冷设备的方法包括操作蒸发器以冷却第一隔室,启动除霜循环以使蒸发器除霜,在第一时间段内反复给予除霜加热器供电,并在除霜期间第二时间段除霜加热器通电 循环,并且在所述蒸发器达到预定的最佳温度之后终止除霜循环。