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    • 55. 发明申请
    • FROSTING DETECTION DEVICE
    • 防冻检测装置
    • WO1997024568A1
    • 1997-07-10
    • PCT/JP1996003486
    • 1996-11-28
    • ISHIZUKA ELECTRONICS CORPORATIONNOJIRI, Toshiyuki
    • ISHIZUKA ELECTRONICS CORPORATION
    • F25D21/02
    • F25D21/02
    • A frosting detection device using a frosting detection apparatus using in turn a heat sensing detection element and a heat sensing compensation element for detecting a frosting volume through a difference in temperature between the two elements, comprising a frosting detector (1) comprising in turn a heat sensing detection element (1a) and a heat sensing compensation element (1b), an amplifying circuit (2) for amplifying an output signal from the frosting detector (1), a comparative circuit (3) for comparing an output voltage from the amplifying circuit (2) with a set level, an operation detecting circuit (5) for detecting operating conditions of a compressor and a cooling fan (4), and a judgement circuit (6) for detecting a frosting volume through output voltages from the operation detecting circuit (5) and the comparative circuit (3), wherein the output from the comparative circuit (3) is received so as to detect a frosting volume only when the compressor and the cooling fan (4) are in operation.
    • 一种结霜检测装置,其使用结霜检测装置,其使用热感测检测元件和热感测补偿元件,所述结霜检测装置用于通过两个元件之间的温度差来检测结霜量,所述结霜检测装置包括结霜检测器(1),所述结霜检测器 感测检测元件(1a)和热感测补偿元件(1b),用于放大来自结霜检测器(1)的输出信号的放大电路(2);比较电路(3),用于比较来自放大电路 (2),设置有用于检测压缩机和冷却风扇(4)的运转状况的运转检测电路(5);以及判断电路(6),其通过来自运转检测电路的输出电压检测结霜量 (5)和比较电路(3),其中接收比较电路(3)的输出,以便仅当压缩机和冷却风扇(4)为 在运行。
    • 56. 发明申请
    • REFRIGERATOR DEFROST CONTROL
    • 冷冻机控制
    • WO1983000211A1
    • 1983-01-20
    • PCT/US1981000881
    • 1981-06-26
    • ALSENZ, Richard, H.
    • F25D21/02
    • F25D21/006F25B2700/111
    • In one exemplar embodiment, an improved evaporating coil defrost control (28) for use in a refrigeration system is disclosed, and which includes a pair of thermostatically controlled switch contacts (42, 44) positioned adjacent the evaporator coil (14) and responsive to the temperature of the coil, the contacts being heated by a resistor or thermistor heater (46) to maintain the temperature of the contacts above a predetermined "low" temperature level. The refrigerator compressor (18) is operated through one of the normally closed switch contacts (42) when the switch (40) is maintained above the "low" temperature level. A defrost initiation means (48) de-energizes the heater (46) when defrost is necessary, permitting the thermostatically controlled switch contacts (42, 44) to cool below the "low" temperature level and closing the normally open switch contact (44) to actuate a defrost means (26) to defrost the evaporator coil (14). The defrost means (26) heats the evaporator coil (14) until the melting point of the frost or ice is reached to remove frost and ice, and in turn heats the switch contacts (42, 44) until a predetermined "high" temperature level is reached for changing the state of the switch (40) and re-energizing the compressor (18), cooling the evaporator coil (14), and de-energizing the defrost means (26). The resistor or thermistor heater (46) is re-energized to maintain the temperature of the thermostatically controlled switch contacts (42, 44) above the "low" temperature.
    • 在一个示例性实施例中,公开了一种用于制冷系统中的改进的蒸发线圈除霜控制器(28),其包括一对位于蒸发器盘管(14)附近的恒温控制开关触点(42,44),并响应于 线圈的温度,触点被电阻器或热敏电阻加热器(46)加热,以将触点的温度保持在预定的“低”温度水平以上。 当开关(40)保持高于“低”温度水平时,冰箱压缩机(18)通过常闭开关触点(42)中的一个操作。 当需要除霜时,除霜启动装置(48)使加热器(46)断电,允许恒温控制开关触点(42,44)冷却到低于“低”温度水平并关闭常开开关触点(44) 以驱动除霜装置(26)以对蒸发器盘管(14)进行除霜。 除霜装置(26)加热蒸发器盘管(14),直到达到霜冻或冰的熔点以去除霜冻和冰,然后将开关触点(42,44)加热到预定的“高”温度水平 达到改变开关状态(40)并重新通电压缩机(18),冷却蒸发器线圈(14),并使除霜装置(26)断电。 电阻器或热敏电阻加热器(46)被重新通电以将恒温控制开关触点(42,44)的温度保持在“低”温度以上。