| 摘要 |
<P>PROBLEM TO BE SOLVED: To efficiently exchange heat in keeping constant the height of a heat exchanger and adjusting a tier pitch and a column pitch corresponding to the outer diameter of a heat transfer tube. <P>SOLUTION: An indoor heat exchanger 31 having a predetermined constant height includes a plurality of fins 312 which are provided in parallel at predetermined intervals and allow air to pass therethrough, and a heat transfer tube 311 which is disposed by crossing the fins 312 and allows a refrigerant to flow inside. The relation among the outer diameter (D) of the heat transfer tube 311, the tier pitch (DP), and the column pitch (RP) is 4 mm≤D≤6.35 mm, 1.89 Dmm≤DP≤2.75 Dmm, and 1.25 Dmm≤RP≤1.92 Dmm. <P>COPYRIGHT: (C)2012,JPO&INPIT |
