| 摘要 |
<p>A heat exchanger for exchange of heat between two liquid media, particularly an oil-water-heat exchanger for cooling engine or transmission oil in an automotive vehicle with the aid of the cooling water flow of the engine, comprises two heat-exchange chambers (1, 2) mutually separated by a common liquid-impervious partition wall (3) and intended to be through-passed by a respective one of the media. The partition wall (3) is tubular with a circular cross-section and open axial ends forming an inlet and an outlet for the water. The heat-exchange chamber (1) for the water is annular and located radially inwards of the partition wall and encloses a direct flow path for the water from the inlet (4) to the outlet (5), and communicates with the direct flow path in a manner such that only part of the total water flow through the inlet (4) will pass through the said heat-exchange chamber (1), whereas the remainder of the water will flow along the direct flow path to the outlet (5). The other heat-exchange chamber (2) intended for the oil is annular and encircles the outer surface of the tubular partition wall (3).</p> |
