| 摘要 |
PURPOSE: A piping structure is provided to simplify a structure, save a cost by reducing a material cost and the number of process and to gain the indirect heat hyperventilation effect between a processing and a returning coolant. CONSTITUTION: The section which is continued from a compressor(1) to a condenser(2), the condenser to a drier(3), and the drier to an expansion valve is connected with one pipe by using a double pipe(6) for forming two semicircle type passage(6a, 6b) by dividing a middle part into two with a partition(61) and a dividing device(7) for helping the division of processing and the returning coolant by connecting both side ends of the double pipe.
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