REFRIGERATING CYCLE AND AIR CONDITIONER EQUIPPED THEREWITH

摘要

PROBLEM TO BE SOLVED: To obtain a refrigerating cycle of high reliability which can reduce the problem of sticking of foreign substances to outlet and inlet parts of a thin tube by a simple and inexpensive structure, irrespective of the presence or absence of switchover of cooling and heating operations. SOLUTION: In the refrigerating cycle using a non-chlorine refrigerant, an expansion unit 3 is constituted by connecting in parallel a plurality of thin tubes 3e-3g different at least in either the bore diameter or the length.