ROTARY COMPRESSOR AND REFRIGERATION CYCLE DEVICE

WIPO Patent Application WO/2023/181364

A1

Provided are: a multi-stage rotary compressor in which a fluid compressed by a low-stage compression mechanism is further compressed by a high-stage compression mechanism, wherein pressure pulsation and vibration in an intermediate pipe connecting a discharge side of the low-stage compression mechanism and a suction side of the high-stage compression mechanism can be reliably reduced, and the entire device including a muffler can be reduced in size; and a refrigeration cycle device. A rotary compressor (2) comprises a first cylinder (55) having a first compression chamber (61) for compressing and discharging introduced low-pressure refrigerant gas, a second cylinder (57) having a second compression chamber (62) for compressing introduced medium-pressure refrigerant gas, an upstream intermediate pipe (13u) that guides medium-pressure refrigerant gas discharged from the first compression chamber (61) to the outside of a sealed container (16), and an external muffler (39) connected to the upstream intermediate pipe (13u), the relationship between an outlet area S1 of the upstream intermediate pipe (13u) and a flow path cross-sectional area S2 of the external muffler (39) being 0.01≤(S1÷S2)≤0.04.

WO/2010/143522	REFRIGERANT COMPRESSOR AND HEAT PUMP DEVICE
JP3003823	ROTARY COMPRESSOR

HATAYAMA MASAHIRO (JP)
JAFET FERDHY MONASRY (JP)

PCT/JP2022/014449

September 28, 2023

March 25, 2022

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TOSHIBA CARRIER CORP (JP)

F04C29/06; F04C18/356; F04C23/00

JP2001082369A	2001-03-27
JP2006017024A	2006-01-19
JP2010065562A	2010-03-25
JP2003166472A	2003-06-13

TOKYO INTERNATIONAL PATENT FIRM (JP)

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