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    • 5. 发明授权
    • Air conditioner
    • 冷气机
    • US5533351A
    • 1996-07-09
    • US256611
    • 1994-09-23
    • Kenji MiyataHideki TsujiiShinichi OkaMasaaki TakegamiTakeo UenoTetsuya Suda
    • Kenji MiyataHideki TsujiiShinichi OkaMasaaki TakegamiTakeo UenoTetsuya Suda
    • F25B1/00F25B13/00F25B43/00F25B41/00
    • F25B43/006F25B13/00F25B2400/16
    • A reversibly operatable refrigerant circulating circuit (1) is formed in such a manner that a compressor (21), an outdoor heat exchanger (23), a motor-operated expansion valve (25) through which refrigerant flows in both directions and an indoor heat exchanger (31) are connected in this order. Between the motor-operated expansion valve (25) and the indoor heat exchanger (31), there is provided a refrigerant regulator (4) for regulating a circulation amount of refrigerant in a cooling operation cycle and storing liquefied refrigerant in a heating operation cycle. The refrigerant regulator (4) has a first flow pipe (42) to which the outdoor heat exchanger (23) is connected and a second flow pipe (43) which has plural refrigerant holes (45, 45 . . . ) and to which the indoor heat exchanger (31) is connected. Further, there is provided a widening control part (73) for controlling to widen an opening of the motor-operated expansion valve (25) when a pressure HP of high-pressure refrigerant in the refrigerant circulating circuit (1) reaches to a set value. Thus, an accumulator is dispensed with, an allowance range of a charge amount of refrigerant is widened and a rising of the pressure of high-pressure refrigerant is prevented.
    • PCT No.PCT / JP93 / 01693 Sec。 371日期1994年9月23日 102(e)1994年9月23日PCT 1993年11月17日PCT公布。 第WO94 / 12834号公报 日期:1994年6月9日。可逆操作的制冷剂循环回路(1)形成为:制冷剂流过的压缩机(21),室外热交换器(23),电动膨胀阀(25) 并且室内热交换器31以这种顺序连接。 在电动膨胀阀(25)和室内热交换器(31)之间,设有制冷剂调节器(4),用于调节制冷运转循环中的制冷剂循环量,并在制热运转循环中储存液化制冷剂。 制冷剂调节器(4)具有与室外热交换器(23)连接的第一流量管(42)和具有多个制冷剂孔(45,45 ...)的第二流量管(43) 室内热交换器31连接。 此外,在制冷剂循环回路(1)中的高压制冷剂的压力HP达到设定值时,设置有用于控制电动膨胀阀(25)的开度变宽的加宽控制部(73) 。 因此,省略了蓄能器,制冷剂的充电量的允许范围变宽,并且防止了高压制冷剂的压力上升。