REFRIGERATION DEVICE AND COMPRESSION DEVICE

A refrigerant circuit (15) includes a first compressor (21) connected to a first suction pipe (21s) and a first discharge pipe (21d) and configured to compress a refrigerant, a second compressor (22) connected to a second suction pipe (22s) and a second discharge pipe (22d) and configured to compres...

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Bibliographic Details
Main Authors ITOU, Takamasa, KONDOU, Azuma, TOMITA, Chiharu
Format Patent
LanguageEnglish
French
German
Published 06.03.2024
Subjects
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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Summary:A refrigerant circuit (15) includes a first compressor (21) connected to a first suction pipe (21s) and a first discharge pipe (21d) and configured to compress a refrigerant, a second compressor (22) connected to a second suction pipe (22s) and a second discharge pipe (22d) and configured to compress the refrigerant discharged from the first compressor (21), a radiator (23), and a high-pressure passage (P21) connecting the second discharge pipe (22d) and the radiator (23). A first oil drain passage (P31) guides an oil in the second compressor (22) to one of the first suction pipe (21s) and an intermediate port (21i) of the first compressor (21), without via the high-pressure passage (P21).
Bibliography:Application Number: EP20210874816