| 摘要 |
A branching unit has a refrigerant pipe that is branched into a plurality of branching refrigerant pipes, and includes an insulation material resin casing and an expanded insulation material casing. The insulation material resin casing encloses branching portion while assuring an insulation space between the insulation material resin casing and the branching portion. The expanded insulation material casing is disposed on the external periphery of the insulation material resin casing. |
