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    • 9. 发明申请
    • REFRIGERATION APPARATUS
    • 制冷装置
    • US20100005819A1
    • 2010-01-14
    • US12519402
    • 2008-11-12
    • Noriyasu KawakatsuHisaaki TakaokaHideaki KuriyamaShigeto Tanaka
    • Noriyasu KawakatsuHisaaki TakaokaHideaki KuriyamaShigeto Tanaka
    • F25B41/04
    • F25B41/062F25B2341/0652F25B2600/01F25B2600/21F25B2700/1931F25B2700/21172F25B2700/21174F25B2700/21175Y02B30/72
    • A refrigeration apparatus (10) includes: a refrigerant circuit (20) provided with a variable-opening expansion valve (13); and a valve control means (33) for controlling the opening of the expansion valve (13) by outputting to the expansion valve (13) an opening command value equal to or larger than a lower limit command value. During operation of a refrigeration cycle and in a lower-limit-controlled state in which the opening command value is equal to the lower limit command value, the valve control means (33) performs a first determination operation of determining whether the refrigerant flow through the expansion valve (13) is in an excessively large amount state or not based on a condition of refrigerant between the expansion valve (13) and the suction side of a compressor (11), and corrects the lower limit command value to a smaller value if the determination result in the first determination operation is that the refrigerant flow through the expansion valve (13) is in an excessively large amount state.
    • 制冷装置(10)包括:制冷剂回路(20),设置有可变开式膨胀阀(13); 以及用于通过向膨胀阀(13)输出等于或大于下限指令值的打开指令值来控制膨胀阀(13)的打开的阀控制装置(33)。 在制冷循环的运转中,在开启指令值等于下限指令值的下限控制状态下,阀控制单元(33)进行第一判定动作,判断制冷剂流过 膨胀阀(13)根据膨胀阀(13)和压缩机(11)的吸入侧之间的制冷剂的状态而处于过大的状态,并且将下限指令值修正为较小的值,如果 第一确定操作中的确定结果是通过膨胀阀(13)的制冷剂流量处于过大的状态。