Patent ID: 7841393

Claim:
A heat exchanger comprising: a plurality of tubes stacked in a tube stacking direction; an inlet tank coupled to the tubes and having an inlet port on an end thereof; an outlet tank coupled to the tubes and having an outlet port on an end thereof, the end being on a same side as the inlet port with respect to the tube stacking direction; and a cover member disposed in at least one of the inlet tank and the outlet tank, wherein the cover member partly covers openings of ends of predetermined tubes of the plurality of the tubes, the predetermined tubes being located adjacent to at least one of the inlet port and the outlet port with respect to the tube stacking direction; the cover member includes a main wall extending in a direction parallel to the tube stacking direction with a predetermined width, the main wall has a wall surface that is perpendicular to a longitudinal direction of the tubes, and the openings of the ends of the predetermined tubes are partly covered by the wall surface; the main wall includes a first wall portion and a second wall portion, the second wall portion being disposed farther away than the first wall portion with respect to at least one of the inlet port and the outlet port in the tube stacking direction, and the second wall portion having a width greater than a width of the first wall portion, the widths of the first and second wall portions being defined by dimensions in a direction perpendicular to the tube stacking direction.