STEAM COMPRESSION TYPE REFRIGERATOR

To disclose one example of steam compression type refrigerators of an injection cycle capable of preventing a refrigeration capacity (heat absorption capacity) occurring in an evaporator from deteriorating.SOLUTION: A throttle opening of a first expansion valve 30 is controlled so that refrigerant f...

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Bibliographische Detailangaben
Hauptverfasser:	KOBATA YUSHI, FUTAWATARI NAOKI, UDAGAWA YOSUKE
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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Beschreibung
Zusammenfassung:	To disclose one example of steam compression type refrigerators of an injection cycle capable of preventing a refrigeration capacity (heat absorption capacity) occurring in an evaporator from deteriorating.SOLUTION: A throttle opening of a first expansion valve 30 is controlled so that refrigerant flowing into a second expansion valve 60 becomes liquid-phase refrigerant having a degree of overcooling of 0°C or higher. Consequently, since refrigerant of a gas-liquid two-phase state can be prevented from flowing into the second expansion valve 60, refrigerant can be decompressed sufficiently in the second expansion valve 60, and thus sufficient refrigeration capacity (heat absorption capacity) can be exhibited in the evaporator 70.SELECTED DRAWING: Figure 1 【課題】蒸発器で発生する冷凍能力（吸熱能力）が低下することを抑制可能なインジェクションサイクル方式の蒸気圧縮式冷凍機の一例を開示する。【解決手段】第２膨張弁６０に流入する冷媒の過冷却度が０℃以上の液相冷媒となるように第１膨張弁３０の絞り開度が制御される。これにより、第２膨張弁６０に気液二相状態の冷媒が流入することを抑止でき得るので、第２膨張弁６０にて冷媒を十分に減圧することができ、蒸発器７０で十分な冷凍能力（吸熱能力）を発生させることが可能となり得る。【選択図】図１