PERFORATED TUBE, HEAT EXCHANGER, AND REFRIGERATING DEVICE

To provide a perforated tube that can reduce resistance when the perforated tube is inserted into a fin.SOLUTION: In a perforated tube, a plurality of refrigerant flow passages 30 are formed side by side. When a direction in which the plurality of refrigerant flow passages 30 are arranged side by side is defined as a first direction X, a direction in which the refrigerant flow passages 30 extend is defined as a second direction Y, and a direction orthogonal to the first direction X and the second direction Y is defined as a third direction Z, recessed parts 33 recessed inside the perforated tube 26 in the third direction Z so as to correspond to the positions of the refrigerant flow passages 30 are formed in end surfaces 41a and 42a of the perforated tube 26 in the third direction Z.SELECTED DRAWING: Figure 5 【課題】フィンに多穴管を挿入する際の抵抗を低減することができる多穴管を提供する。【解決手段】複数の冷媒流路３０が並べて形成された多穴管であって、複数の冷媒流路３０が並ぶ方向を第１方向Ｘ、冷媒流路３０が延びる方向を第２方向Ｙ、第１方向Ｘ及び第２方向Ｙに直交する方向を第３方向Ｚとしたとき、第３方向Ｚにおける多穴管２６の端面４１ａ、４２ａには、冷媒流路３０の位置に対応して第３方向Ｚにおける多穴管２６の内側に凹む凹部３３が形成されている。【選択図】図５