| 摘要 |
PURPOSE:To sufficiently provide a heat exchanging efficiency and pressure resistant performance by providing flat upper and lower walls and a reinforcing wall having a plurality of communicating holes at a predetermined interval in a longitudinal direction over the upper and lower walls, and using a flat aluminum tube having parallel refrigerant passages therein. CONSTITUTION:A refrigerant flow tube T5 for a heat exchanger comprises flat upper and lower walls 1, 2 and a plurality of reinforcing walls 39 provided at a predetermined interval in a longitudinal direction over the walls 1, 2. The wall 39 has a plurality of communicating hole 40 communicating with parallel refrigerant passages 4. A flat aluminum tube 5 having the passages 4 forms a follow part of upper and lower aluminum plates 37, 38, both side edges of the plate 38 are bent circularly, and opposed to both side edges of the flat plate 37 to be connected. Thus, refrigerant flows uniformly to improve its heat exchanging efficiency. |
