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    • 6. 发明申请
    • REFRIGERATION APPARATUS
    • 制冷装置
    • US20100024454A1
    • 2010-02-04
    • US12525208
    • 2008-01-16
    • Satoshi KawanoShinya Matsuoka
    • Satoshi KawanoShinya Matsuoka
    • F25B41/04F25B27/00
    • F25B41/062F25B13/00F25B49/027F25B2313/005F25B2313/0233F25B2313/02741F25B2341/0662F25B2500/01F25B2500/19F25B2600/19F25B2600/21F25B2600/2513F25B2700/04
    • For cooling operation, a refrigeration apparatus (20) includes a heat-source-side valve opening control means (53) for controlling a degree of opening of a heat-source-side expansion valve (36) so that pressure of a refrigerant flowing into the utilization-side expansion valve (51) in the cooling operation becomes equal to or lower than a predetermined reference pressure value. For heating operation, the refrigeration apparatus (20) includes a utilization-side valve opening control means (38, 54) for performing, when a low-quantity utilization unit (61) in which a quantity of the refrigerant falls below a quantity of the refrigerant required for delivering capacity of the utilization unit (61) is found among a plurality of the utilization units (61) in the heating operation, valve opening reducing operation of reducing a degree of opening of the utilization-side expansion valve (51) of the utilization unit (61) except for the low-quantity utilization unit (61).
    • 为了制冷运转,制冷装置20包括:热源侧开阀控制机构53,用于控制热源侧膨胀阀36的开度,使制冷剂的压力流入 冷却运转中的利用侧膨胀阀51成为规定的基准压力值以下。 为了进行制热运转,制冷装置(20)具备利用侧开阀控制机构(38,54),当低成本制冷剂量低于所述制冷剂量时, 在加热运转中的多个利用单元(61)中发现利用单元(61)的输送能力所需的制冷剂,利用侧膨胀阀(51)的开度降低的开阀降低动作 除了低量利用单元(61)以外的利用单元(61)。