REFRIGERATION DEVICE

PROBLEM TO BE SOLVED: To suppress excessive compression loss and reverse flow loss in a first compressing mechanism composed of an intrinsic compression ratio-type fluid machine, in a refrigeration device provided with a compressor having the first compressing mechanism and a second compressing mech...

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Bibliographische Detailangaben
Hauptverfasser:	TOSHIMA RYUZO, SHIBAMOTO YOSHITAKA
Format:	Patent
Sprache:	eng
Schlagworte:	BLASTING HEATING LIGHTING MECHANICAL ENGINEERING POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC FLUIDS ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENTMACHINES FOR LIQUIDS ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENTPUMPS WEAPONS
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To suppress excessive compression loss and reverse flow loss in a first compressing mechanism composed of an intrinsic compression ratio-type fluid machine, in a refrigeration device provided with a compressor having the first compressing mechanism and a second compressing mechanism composed of displacement-type fluid machines.SOLUTION: In a refrigerant circuit (11), an intrinsic compression ratio-type first compressing mechanism (41) is used as a low stage-side compressing mechanism. In the refrigerant circuit (11), an injection passage (26) is disposed to inject a refrigerant between the first compressing mechanism (41) and a second compressing mechanism (42). A discharge volume of the first compressing mechanism (41) and a suction volume of the second compressing mechanism (42) are determined so that a volume of the refrigerant discharged from the first compressing mechanism (41) in one rotation of a driving shaft (50) is smaller than a volume of the refrigerant sucked into the second compressing mechanism (42) in one rotation of the driving shaft (50).