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    • 4. 发明授权
    • AIR CONDITIONER
    • 冷气机
    • EP1965150B1
    • 2017-07-26
    • EP06834561.0
    • 2006-12-13
    • DAIKIN INDUSTRIES, LTD.
    • NISHIMURA, TadafumiKASAHARA, Shinichi
    • F25B1/00F25B49/00F25B13/00F25B45/00
    • F25B49/005F25B13/00F25B45/00F25B2313/0233F25B2313/0253F25B2313/02743F25B2313/0315F25B2400/01F25B2400/075F25B2500/19F25B2500/222F25B2500/28F25B2700/04
    • An object of the present invention is to eliminate stagnation of refrigerant in refrigerating machine oil in a compression mechanism, and to use the difference in the solubility of the refrigerant in the oil to minimize error in predicting the quantity of refrigerant. An air conditioner (1) is provided with a refrigerant circuit (7), refrigerant stagnation judgment means (8a to 8c), and an operation controller (6a to 6c). The refrigerant circuit is a circuit that includes a heat source unit (2a to 2c), a refrigerant communication pipe (4, 5), an expansion mechanism (31a, 31 b, ... ), and a utilization unit (29a to 29c, 3a, 3b, ... ). A heat source unit and a utilization unit are connected to the refrigerant fluid communication pipes. The heat source unit has a compression mechanism (21a to 21c) and a heat source side heat exchanger (24a to 24c). The refrigerant stagnation judging means can judge whether the refrigerant has stagnated inside the compression mechanism. The operation controller performs a refrigerant de-stagnation operation for eliminating stagnation of the refrigerant in the case that the refrigerant stagnation judging means has judged in advance that the refrigerant inside the compression mechanism has stagnated when a refrigerant quantity judging operation is carried out for judging the refrigerant quantity inside the refrigerant circuit.
    • 本发明的目的在于消除压缩机构内的冷冻机油中的制冷剂停滞,并利用制冷剂在油中的溶解度的差异来使预测制冷剂量的误差最小化。 空调装置1具有制冷剂回路7,制冷剂停滞判断装置8a〜8c和运转控制装置6a〜6c。 制冷剂回路是包括热源单元(2a〜2c),制冷剂连通配管(4,5),膨胀机构(31a,31b,...)和利用单元(29a〜29c)的回路 ,3a,3b,...)。 热源单元和利用单元连接到制冷剂流体连通管。 热源单元具有压缩机构21a〜21c和热源侧热交换器24a〜24c。 制冷剂停滞判断装置可以判断制冷剂是否滞留在压缩机构内。 当制冷剂停滞判断装置已经预先判断压缩机构内部的制冷剂已经停滞时,当执行制冷剂量判断操作以判断制冷剂停止时,运行控制器执行制冷剂停滞运行以消除制冷剂停滞 制冷剂回路内的制冷剂量。