REFRIGERATION CYCLE DEVICE AND EXPANSION VALVE

PROBLEM TO BE SOLVED: To provide a refrigeration cycle device preventing failure, such as fault of a compressor, from occurring even when used in a refrigerant R410A.SOLUTION: A refrigerant used in a refrigeration cycle is R32. An outdoor expansion valve 13 makes a ratio of a flow rate of a refriger...

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Hauptverfasser:	ISOGAWA TAKANORI, TSUDA MIZUKI, TSUKADA FUKUJI
Format:	Patent
Sprache:	eng ; jpn
Schlagworte:	BLASTING COMBINED HEATING AND REFRIGERATION SYSTEMS HEAT PUMP SYSTEMS HEATING LIGHTING LIQUEFACTION SOLIDIFICATION OF GASES MANUFACTURE OR STORAGE OF ICE MECHANICAL ENGINEERING REFRIGERATION MACHINES, PLANTS OR SYSTEMS REFRIGERATION OR COOLING WEAPONS
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Zusammenfassung:	PROBLEM TO BE SOLVED: To provide a refrigeration cycle device preventing failure, such as fault of a compressor, from occurring even when used in a refrigerant R410A.SOLUTION: A refrigerant used in a refrigeration cycle is R32. An outdoor expansion valve 13 makes a ratio of a flow rate of a refrigerant to opening change of the outdoor expansion valve 13 relatively small in a low-opening region part 42b whose opening is relatively low, and makes the ratio of the flow rate of the refrigerant to the opening change of the outdoor expansion valve 13 larger in a high-opening region part 42a, whose opening is larger than that of the low-opening region part 42b, than that of the low-opening region part 42b.SELECTED DRAWING: Figure 4 【課題】冷媒Ｒ４１０Ａに使用しても圧縮機の故障等の不具合が生じない冷凍サイクル装置を提供する。【解決手段】冷凍サイクルに用いる冷媒はＲ３２である。室外膨張弁１３は、比較的開度が低い低開度領域部４２ｂでは室外膨張弁１３の開度変化に対する冷媒の流量の割合を比較的小さくし、開度が低開度領域部４２ｂより高い高開度領域部４２ａでは室外膨張弁１３の開度変化に対する冷媒の流量の割合を低開度領域部４２ｂより大きくする形状である。【選択図】図４