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    • 44. 发明授权
    • Refrigerating device
    • 制冷装置
    • US06880361B2
    • 2005-04-19
    • US10740462
    • 2003-12-22
    • Shigeharu Taira
    • Shigeharu Taira
    • F25B1/00C09K5/04F25B9/00F25B13/00F25B41/00
    • C09K5/045C09K2205/122C09K2205/24F25B9/002F25B13/00F25B41/003F25B2400/12F25B2500/01Y02P20/123Y02P20/124
    • An energy-saving refrigerating device is capable of preventing global warming, allowing a communication pipe diameter to be reduced and the number of types of the communication pipe diameters to be reduced while a COP of over the COP obtained when R22 is used is provided by using R32 with small global warming potential (GWP). The refrigerating device includes a compressor, a first heat exchanger, an expansion device, and a second heat exchanger. The diameters of first and second communication pipes are set to {fraction (2/8)} in. and ⅜ in., respectively, in the refrigerating capacity range of 2.2 to 5.6 kW. The diameters of the first and second communication pipes are set to {fraction (2/8)} in. and {fraction (4/8)} in., respectively, in the refrigerating capacity range of 4.5 to 7.1 kW. The diameters of the first and second communication pipes are set to {fraction (2/8)} in. and ⅝ in., respectively, in the refrigerating capacity range of 7.1 to 14.0 kW.
    • 节能制冷装置能够防止全球变暖,通过使用通过使用R22时能够减少连通管直径并减少连通管直径的类型,而使用R22时的COP超过COP R32具有小的全球变暖潜能值(GWP)。 制冷装置包括压缩机,第一热交换器,膨胀装置和第二热交换器。 第一和第二连通管的直径分别设定为{分段(2/8英寸和3/8英寸),制冷量范围为2.2至5.6千瓦,第一和第二连通管的直径设定 到{分数(2/8英寸和{分数(4/8英寸),分别在4.5至7.1kW的制冷能力范围内,第一和第二连通管的直径设定为{分数(2/8 in和5/8 in。在制冷量范围内分别为7.1〜14.0 kW。
    • 47. 发明授权
    • Refrigerating device
    • 制冷装置
    • US06591631B1
    • 2003-07-15
    • US10110935
    • 2002-04-18
    • Shigeharu Taira
    • Shigeharu Taira
    • F25B100
    • C09K5/045C09K2205/24F25B9/002F25B9/006F25B13/00F25B2400/12F25B2500/01Y02P20/123Y02P20/124
    • A refrigeration unit for performing a refrigerating cycle by circulating R32 as a refrigerant through a refrigerant circuit composed of a compressor (23), a condenser (22), expansion means (26), and an evaporator (2). An amount of R32 for filling the refrigerant circuit is set to be in a range of 120 g to 450 g per kW of refrigerating capacity, or an amount of R32 for filling the refrigerant circuit is set to be in a range of 400 g to 750 g per liter of unobstructed capacity of the condenser (22). By using R32 as a refrigerant that is small in Global Warming Potential (GWP), an energy-saving refrigeration against global warming with high coefficient of performance (COP) is obtained.
    • 一种制冷机构,其特征在于,通过由压缩机(23),冷凝器(22),膨胀机构(26)和蒸发器(2)构成的制冷剂回路使作为制冷剂的R32循环而进行制冷循环。 用于填充制冷剂回路的R32的量被设定在每千瓦制冷量的120g至450g的范围内,或用于填充制冷剂回路的R32的量设定在400g至750的范围内 g每升冷凝器(22)的无障碍能力。 通过使用R32作为全球变暖潜能值(GWP)较小的制冷剂,可获得具有高性能系数(COP)的全球变暖的节能制冷。
    • 48. 发明授权
    • Refrigerating device
    • 制冷装置
    • US06581397B1
    • 2003-06-24
    • US10110930
    • 2002-04-18
    • Shigeharu TairaJunichirou TanakaKoji Shibaike
    • Shigeharu TairaJunichirou TanakaKoji Shibaike
    • F25B500
    • F25B9/002F25B9/006F25B13/00F25B2341/0653F25B2400/12F25B2400/13F25B2600/2509F25B2700/21152F25B2700/21163F25B2700/21175Y02B30/72
    • A refrigerating device has a refrigerant circuit having a compressor (1), an indoor heat exchanger (3), a main motor operated valve (EV1), and an indoor heat exchanger (5) connected in a loop, and uses, as a working medium, an R32 refrigerant or a mixed refrigerant containing R32 at at least 70 wt %. A supercooling heat exchanger (11) is disposed between the indoor heat exchanger (3) and the main motor operated valve (EV1), and the liquid side of the refrigerant circuit are connected to the gas side by by-pass pipes (33, 34) through the supercooling heat exchanger (11). A supercooling motor operated valve (EV2) is disposed at the by-pass pipe (33) upstream of the supercooling heat exchanger (11). A discharge temperature detected by a discharge temperature sensor (21) is determined by a discharge temperature determination part (10 b), and based on the determination result, the opening of the supercooling motor operated valve (EV2) is controlled so as to control an amount of the refrigerant flowing through the by-pass pipes (33, 34), whereby, using the working medium containing R32, the discharge temperature of the compressor is optimized without reducing the efficiency, and the COP and reliability are improved.
    • 制冷装置具有制冷剂回路,该制冷剂回路具有压缩机(1),室内热交换器(3),主电动操作阀(EV1)和连接在回路中的室内热交换器(5),作为工作 介质,R32制冷剂或含有至少70重量%的R32的混合制冷剂。 在室内热交换器(3)和主电动阀(EV1)之间设置过冷却热交换器(11),制冷剂回路的液侧通过旁通管(33,34 )通过过冷却热交换器(11)。 过冷却电动阀(EV2)设置在过冷却热交换器(11)上游的旁通管(33)。 由排出温度传感器(21)检测的排出温度由排出温度判定部(10b)决定,根据判定结果,控制过冷却电动阀(EV2)的开度,以控制 流过旁通管(33,34)的制冷剂的量,由此,使用含有R32的工作介质,优化压缩机的排出温度而不降低效率,并且提高COP和可靠性。
    • 50. 发明授权
    • Air conditioner and washing operation thereof
    • 空调及其洗涤操作
    • US5806329A
    • 1998-09-15
    • US817774
    • 1997-04-24
    • Shigeharu TairaYouichi Oonuma
    • Shigeharu TairaYouichi Oonuma
    • F25B43/02F25B45/00
    • F25B45/00F25B43/02F25B2345/001F25B2345/002F25B2400/18
    • An air conditioner which includes ports (22, 23, 24) provided on portions in a refrigerant circuit where oil are liable to gather, such as bottoms of a compressor (1), accumulator (5), a receiver (12) and the like, through which ports a refrigerant is extracted and charged. The air conditioner is further provided with a control unit (50) for controlling washing operation for the refrigerant circuit, such that at the time of washing of the refrigerant circuit, washing operation is continued under the control of the control unit (50) for a predetermined period of time while increasing a frequency of the compressor (1) so as to, for example, make a temperature in a discharge pipe (2) higher than a predetermined value, and then is stopped, and the washing operation is resumed after a fixed period of time. In the air conditioner, washing of the refrigerant circuit is efficiently and effectively performed by repeatedly staring and stopping the operation of the compressor (1) predetermined times within a predetermined period of time. After washing, the refrigerant and an oil are replaced through ports (22, 23, 24).
    • PCT No.PCT / JP95 / 02181 Sec。 371日期1997年04月24日 102(e)日期1997年4月24日PCT 1995年10月24日PCT PCT。 公开号WO96 / 12921 日期1996年2月5日一种空调装置,其包括设置在油容易收集的制冷剂回路中的部分上的端口(22,23,24),例如压缩机(1)的底部,蓄电池(5),接收器 12)等,通过这些端口提取并充电制冷剂。 空气调节器还设置有用于控制制冷剂回路的洗涤操作的控制单元(50),使得在洗涤制冷剂回路时,在控制单元(50)的控制下持续洗涤操作 同时增加压缩机(1)的频率,以便例如使排放管(2)中的温度高于预定值,然后停止,并且在a 固定时间段 在空调机中,通过在预定时间内反复凝视停止压缩机(1)的操作预定次数,有效地和有效地进行制冷剂回路的清洗。 洗涤后,通过端口(22,23,24)更换制冷剂和油。