COMPRESSOR SUCTION AND OIL-RETURN PIPE, SCROLL COMPRESSOR, AND REFRIGERATION CYCLE DEVICE

WIPO Patent Application WO/2023/135731

A1

This compressor suction and oil-return pipe is a pipe which is connected to a vertical scroll compressor comprising: a shell; a compression mechanism part which compresses a refrigerant suctioned into the shell; a driving mechanism part which is disposed below the compression mechanism part with a suction space therebetween, and which is linked to the compression mechanism part via a rotary shaft; and a suction port which is formed in the shell and suctions the refrigerant into the suction space. The compressor suction and oil-return pipe comprises: an oil separation part which is a pipe portion extending upward after extending downward, and separates a lubricant from the refrigerant containing the lubricant; a connection part which is a pipe portion extending from the end of the oil separation part toward the suction port and connected to the suction port or to a suction pipe connected to the suction port, and supplies the refrigerant from which the lubricant has been separated to the suction pipe; and an oil-return part which is a pipe portion, the upstream end of which communicates with the lower dip part of the oil separation part and the downstream end of which is connected to a lower part of the shell, and returns the lubricant separated in the oil separation part to the lower part of the shell.

TAKAI AKIHITO (JP)
TATSUWAKI KOHEI (JP)

PCT/JP2022/001076

July 20, 2023

January 14, 2022

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MITSUBISHI ELECTRIC CORP (JP)

F04B39/04; F04C29/02

JPH02147762U	1990-12-14
JPS52149412U	1977-11-12
JP2013238142A	2013-11-28
JPH07318176A	1995-12-08
JPH029979A	1990-01-12

KISA PATENT & TRADEMARK FIRM (JP)

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