EJECTOR

WIPO Patent Application WO/2014/156075

A1

According to the present invention, inside a nozzle (31) of an ejector (13) are formed a swirl space (31c) for allowing refrigerant to swirl, and a refrigerant passage for depressurizing refrigerant that has flowed out from the swirl space (31c). The refrigerant passage is provided with a minimum passage surface area part (31d) where the refrigerant passage surface area decreases to a minimum, and a flared part (31f) where the refrigerant passage surface area is gradually enlarged from the minimum passage surface area part (31d) toward a refrigerant injection port (31b); and disposed within the refrigerant passage is a plate-shaped member (33) for reducing a velocity component of the swirl direction of refrigerant flowing into the minimum passage surface area part (31d). The state of refrigerant flowing into the minimum passage surface area part (31d) can thereby be brought near to a gas-liquid mixed state in which gas-phase refrigerant and liquid-phase refrigerant are uniformly mixed, improving the nozzle efficiency of the ejector (13). It is thereby possible to suppress a decrease in the nozzle efficiency of the ejector in which fluid in a gas-liquid mixed state is depressurized in the nozzle.

KAYANO KENTA (JP)
YAMADA ETSUHISA (JP)
NISHIJIMA HARUYUKI (JP)
TAKANO YOSHIAKI (JP)

PCT/JP2014/001590

October 02, 2014

March 19, 2014

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DENSO CORP (JP)

F04F5/46; F04F5/10

JP2002130200A	2002-05-09
JPS5165407A	1976-06-07
JP2011208523A	2011-10-20
JP2009221883A	2009-10-01
JP2011058422A	2011-03-24

KIN, Junhi (JP)
Gold Junki (JP)

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