FLUSH TANK, REFRIGERATING DEVICE HAVING THE FLUSH TANK, AND OPERATION METHOD THEREOF

摘要

PROBLEM TO BE SOLVED: To provide a refrigerating device having a two-stage compressor that can simplify structures of a middle cooler and an economizing circuit and reduce cost.

SOLUTION: An NH3/CO2refrigerating device 10 includes a two-stage compressor, a flush tank 26 comprising an integrally structured housing 34 having the functions of a middle cooler and an economizing cooler; and a CO2condenser 28 having a full-liquid evaporator. The flush tank 26 has a first closed space s1 having a middle cooling function horizontally disposed adjacent to a second closed space s2 having an economizing function. The NH3refrigerant liquid r of a liquid reservoir 24 is sent to the first closed space s1 via the refrigerant liquid pipe 12b and the NH3refrigerant liquid of the first closed space s1 is sent to the second closed space s2 via the refrigerant liquid pipe 12c.

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