Patent ID: 7921671

Claim:
A refrigerant flow divider, comprising: an inlet pipe through which a refrigerant flows in, a main body of which the inside is a cavity, and a plurality of branching pipes through which a refrigerant flows out, wherein the main body is provided with a connection portion through which the inlet pipe is connected, an increasing diameter portion where the diameter gradually increases from the connection portion, a cylindrical portion having the same diameter as the maximum diameter of the increasing diameter portion, and a branching pipe connecting portion provided in a top portion of the cylindrical portion to which the branching pipes are connected at intervals of equal angles, where the length of the main body of the flow divider, defined as the distance between a border portion between the connection portion and the increasing diameter portion and a highest portion on the inner surface of the branch pipe connecting portion, is L mm and the inner diameter of the cylindrical portion of the main body is D 2 mm, the ratio of the length L to the inner diameter D 2 satisfies 2≦L/D 2 ≦8, and where the amount of the refrigerant flowing in through the inlet pipe is G kg/h, a relationship 2≦D 2 2 /G≦13 holds between the flow rate G and the inner diameter D 2 of the main body.