| 摘要 |
PROBLEM TO BE SOLVED: To provide a heat exchanger for securing a required refrigerant flowing quantity, improving heat transfer performance, and reducing noise by using a sufficiently thick outer diameter of heat exchange pipes. SOLUTION: This heat exchanger has a plurality of heat radiating fins 1 juxtaposed at a prescribed interval, and allowing heat exchange air to flow to mutual clearance, and the heat exchange pipes 12 arranged by penetrating through these heat radiating fins, and conducting a heat exchange medium inside. When the outer diameter of the heat exchange pipes is set to D, a pipe stage pitch of a row in the direction orthogonal to the heat exchange air flowing direction of the heat exchange pipes is set to L1, and a pipe row pitch in the heat exchange air flowing direction of the heat exchange pipes is set to L2, these are set to 7.0 mm≤D≤10.5 mm, 3.7×D≤L1≤5.0×D, and 1.6×D≤L2≤2.6×D. COPYRIGHT: (C)2004,JPO
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