| 摘要 |
A heat exchange device comprises a heat exchanger. Pipelines of the heat exchanger are fixed to heat exchange pipes through brazing, an operator can easily adjust the quantity of brazing filler metal within a proper range when brazing is manually performed, and unnecessary use of the brazing filler metal is suppressed when brazing is mechanically performed. An air conditioner indoor unit comprises an indoor heat exchanger and a plurality of pipelines (a liquid refrigerant pipeline, a gas refrigerant pipeline, a U-shaped connecting pipeline and a branch connecting pipeline), the indoor heat exchanger is provided with a plurality of heat exchange pipes, and the pipelines are fixed to the heat exchange pipes. The pipelines are inserted into insertion portions formed at ends of the heat exchange pipes and fixed to the heat exchange pipes through brazing. The heat exchange pipes include a first heat exchange pipe and a second heat exchange pipe, the first heat exchange pipe is manually brazed with the liquid refrigerant pipeline, the gas refrigerant pipeline and the branch connecting pipeline, and the second heat exchange pipe is mechanically brazed with the U-shaped connecting pipeline. The first insertion portion of the first heat exchange pipe is longer than the second insertion portion formed on the second heat exchange pipe. |
