| 摘要 |
A heat exchanger 1 includes a heat exchanger core section 4; a refrigerant inlet header section 5 and a refrigerant outlet header section 6, which are disposed on the upper-end side of heat exchange tubes 12; and a refrigerant inflow intermediate header section 9 and a refrigerant outflow intermediate header section 11, which are disposed on the lower-end side of the heat exchange tubes 12. A flow-dividing control wall 67a having a plurality of refrigerant passage holes 71 and vertically dividing the interior of the second intermediate header section 11 into two spaces 11A and 11B is provided within the second intermediate header section 11. A communication is established between the first intermediate header section 9 and the lower space 11B of the second intermediate header section 11 at one end. A guide portion 80 is provided at a refrigerant inflow end portion of the second intermediate header section 11 so as to guide the refrigerant flowing into the lower space 11B of the second intermediate header section 11 such that the refrigerant flows toward the flow-dividing control wall 67c; i.e., toward the upper side. This heat exchanger exhibits excellent heat exchange performance when used as an evaporator.
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