EJECTOR TYPE DECOMPRESSION DEVICE

摘要

PROBLEM TO BE SOLVED: To suppress the deterioration of an ejector efficiency ηe in an ejector for adjusting a throttle opening of a nozzle by a needle valve.

SOLUTION: The tip side of the needle valve 440 is formed into a bell shape and the side of the nozzle 410 is formed into a conical and tapered shape so as not to repeat increase/decrease of the cross-sectional area of a refrigerant passage. This constitution effectively exhibits the function of the tapered nozzle 410 boiling and accelerating the refrigerant so as to prevent the deterioration of the ejector efficiency ηe.

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