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公开(公告)号：US4327557A
公开(公告)日：1982-05-04
申请号：US155154
申请日：1980-05-30
CPC分类号： F25D21/006 , F25D2400/06 , F25D2700/02 , F25D2700/12 , F25D2700/122
摘要： A refrigerator includes a compressor, an evaporator fan, a condensor fan and a defrost heater which are controlled by a defrost control system. The control senses the number and duration of freezer and fresh food compartment openings, the duration of the previous defrost operation, and the total accumulated compressor run time since the previous defrosting operation. A stored count is decremented by weighting functions which are adaptably varied in accordance with the number and duration of compartment door openings and the duration of the previous defrosting operation. When the stored count is decremented to zero, the defrosting operation may be initiated, unless inhibited. The defrosting operation is inhibited if the total accumulated compressor run time is less than a predetermined amount. The control is reset to a point just short of a defrosting operation if a power outage occurs.
摘要翻译： 冰箱包括由除霜控制系统控制的压缩机，蒸发器风扇，冷凝器风扇和除霜加热器。 该控制器检测冷冻室和新鲜食品室开口的数量和持续时间，以前的除霜操作的持续时间，以及自从以前的除霜操作以来累积的总压缩机运行时间。 存储的计数通过根据隔室门开口的数量和持续时间以及以前的除霜操作的持续时间自适应地变化的加权函数递减。 当存储的计数减少到零时，除霜抑制可以启动除霜操作。 如果总累积的压缩机运行时间小于预定量，则除霜操作被禁止。 如果发生断电，控制将重新设置为刚刚解除除霜操作的一点。
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公开(公告)号：US4286438A
公开(公告)日：1981-09-01
申请号：US146357
申请日：1980-05-02
申请人： Clarence C. Clarke
发明人： Clarence C. Clarke
CPC分类号： F25B41/04 , F25B49/02 , F25D2400/04 , Y10S62/17
摘要： An energy efficient refrigeration system having a valve in series with a fixed flow restrictor between the condenser and evaporator of the system. The valve is controlled to permit fluid flow whenever the compressor is running, and when the compressor is not running, only in the event the pressure at the outlet of the compressor is above a preselected pressure. The preselected pressure is a high pressure, such as would prevent starting of the compressor, which, in the illustrated embodiment, is a rotary compressor. The pressure sensing structure, in the illustrated embodiment, utilizes an analog of the pressure of the liquid refrigerant within the condenser and, more specifically, utilizes a temperature condition which corresponds to the liquid pressure therein. Alternatively, the temperature sensing may be of the condenser or of the ambient space in which the condenser is housed. The control valve and associated control circuit are arranged to provide a fail-safe function and assure that the valve is open whenever the compressor is operating.
摘要翻译： 一种节能制冷系统，其具有与系统的冷凝器和蒸发器之间的固定限流器串联的阀。 控制阀门，以便每当压缩机运行时允许流体流动，并且当压缩机不运行时，仅在压缩机出口处的压力高于预选压力的情况下。 预选压力是高压，例如可以防止压缩机的启动，在所示的实施例中压缩机是旋转压缩机。 在所示实施例中，压力感测结构利用冷凝器内的液体制冷剂的压力的模拟，更具体地，利用对应于其中的液体压力的温度条件。 或者，温度感测可以是冷凝器或容纳冷凝器的环境空间。 控制阀和相关的控制电路设置成提供故障安全功能，并确保每当压缩机运行时阀都打开。
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