| 摘要 |
PROBLEM TO BE SOLVED: To properly set a refrigerant circulation passage in a heat exchanger in which each row is divided into two heat exchange regions.SOLUTION: Two rows (30, 40) of a heat exchanger (23) are respectively divided into main heat exchange regions (35, 45) and auxiliary heat exchange regions (37, 47). In the heat exchanger (23) functioning as an evaporator, a refrigerant passes through the two auxiliary heat exchange regions (37, 47) connected in parallel, and then successively passes through the leeward main heat exchange region (45) and the windward main heat exchange region (35). In the heat exchanger (23) functioning as a condenser, the refrigerant successively passes through the windward main heat exchange region (35) and the leeward main heat exchange region (45), and then passes through the two auxiliary heat exchange regions (37, 47) connected in parallel.SELECTED DRAWING: Figure 4 |
