Heat exchanger and method of manufacturing the same

摘要

An exhaust gas recirculation cooler that includes an inlet tank, an outlet tank, and an exhaust gas flow conduit in fluid communication with the inlet tank and the outlet tank. The exhaust gas flow conduit includes a first end, a second end, a first narrow side, a second narrow side, a first channel adjacent the first narrow side and extending between the first end and the second end, a second channel adjacent the second narrow side and extending between the first end and the second end, and a plurality of third channels located between the first channel and the second channel and extending between the first end and the second end. At least one of the inlet tank and the outlet tank includes a wall that inhibits exhaust gas from flowing through the first channel while allowing exhaust gas flow through the plurality of third channels.

主权项

1. An exhaust gas recirculation cooler configured to cool exhaust gas from an engine, the exhaust gas recirculation cooler comprising:
a plurality of coolant ports; an inlet tank configured to receive the exhaust gas from the engine; an outlet tank configured to direct the exhaust gas back toward the engine; a plurality of exhaust gas flow conduits in fluid communication with the inlet tank and the outlet tank and arranged in spaced relation to allow coolant to pass over outer surfaces of the exhaust gas flow conduits, at least one of the plurality of exhaust gas flow conduits including
a first end adjacent the inlet tank,a second end adjacent the outlet tank,a first narrow side,a second narrow side opposite the first narrow side,substantially flat broad sides extending between the first narrow side and the second narrow side,a first channel adjacent the first narrow side and extending between the first end and the second end,a second channel adjacent the second narrow side and extending between the first end and the second end, anda plurality of third channels located between the first channel and the second channel and extending between the first end and the second end; and wherein the inlet tank includes a wall that inhibits the exhaust gas from flowing through the first channel while allowing exhaust gas flow through the plurality of third channels, and wherein at least a portion of the first narrow side and at least a portion of the second narrow side each include at least a portion of the outer surfaces over which coolant is allowed to pass.