Heat exchanger with curved core area and intended for use with an agricultural pumper truck

A hydraulic reservoir cooler adapted for use with a hydraulic fluid tank, the hydraulic reservoir cooler comprising:

• a vented front cover;
• a backward curve centrifugal fan located rearward of the vented front cover, the backward curve centrifugal fan having a center point “c” and a radius “r” and arranged to provide substantially horizontal air flow through the vented front cover;
• and
• a core area including fins and a manifold adapted for fluid communication with the hydraulic fluid tank, the core area being located between the vented front cover and the backward curve centrifugal fan;
• the core area further including:
• a straight vertical portion extending in height less than an uppermost upper end of the backward curve centrifugal fan;
• a straight horizontal portion located above the uppermost end of the backward curve centrifugal fan;
• and
• a curved portion connecting the straight vertical and horizontal portions, the curved portion having a center point “C” and a radius “R”;
• wherein C is located above c;
• and
• wherein R is greater than r.