Heat exchanger for vehicle

A heat exchanger for a vehicle, comprising:

• a heat exchange unit in which a plurality of first and second plates are alternately layered to alternately form a first flow path and a second flow path inside, wherein operation fluids pass through each of the first and second flow paths exchange heat and a first surface of the heat exchange unit is connected to an expansion valve;
• a first inflow aperture formed at a first side corner portion on a second surface of the heat exchange unit and connected to the first flow path;
• a first exhaust aperture formed to correspond to the first inflow aperture on the first surface of the heat exchange unit and connected to the first flow path;
• a connection aperture respectively formed in the first and second plate at positions facing the first inflow aperture and the first exhaust aperture, connected to the first flow path inside the heat exchange unit, and closing a connection to the second flow path;
• a second inflow aperture formed to correspond to the first inflow aperture at a second side corner portion of the heat exchange unit and connected to the second flow path;
• and
• a second exhaust aperture formed at a center of the heat exchange unit and connected to the second inflow aperture through the second flow path,
• wherein at least one noise reduction unit configured to reduce noise and vibration generated from the operation fluid moving through the second inflow aperture and the second exhaust aperture is mounted to the first surface or the second surface of the heat exchange unit.