| 摘要 |
A heat exchanger, in which a connector (7) for connection of a receiver tank (4) is brazed to a header pipe (3), male thread parts are used to joint the receiver tank (4) and the connector (7) to each other, and a brazing surface (7a) of the connector (7), at which the connector (7) is brazed to the header pipe (3), is formed to be smaller than a joint surface (7) of the connector (7), at which the connector (7) is jointed to the receiver tank (4). The connector (7) has a plurality of holes (73), (73), into which a plurality of the male thread parts extend or are threaded, and these holes (73), (73) are provided on the joint surface (7a) , at which the connector (7) is jointed to the receiver tank (4), to be symmetrical or substantially symmetrical with respect to a straight line connecting centers of an outflowing channel (71) and of an inflowing channel (72). Also, a groove (74) for division of the brazing surface (7a) is provided between the outflowing channel (71) and the inflowing channel (72) at the brazing surface (7a), at which the connector (7) is brazed to the header pipe (3).
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