| 摘要 |
An oil cooler is disclosed. First and second plates are overlappedly joined together to form a plurality of tubes so as form a plurality of oil passages between the two plates. A plurality of the tubes are stacked to form cooling water passages. Embossing strips are repeatedly formed in skew along the length of first and second plates, and the embossing strips are crossed and joined. The embossing strips which are formed outside the tubes are also crossed and joined. Oil inlet/outlet holes are formed on both ends of the first and second plates respectively. Manifold parts of a certain area are formed around the oil inlet/outlet holes, and the embossing strips are preserved intact around the manifold parts. Accordingly, flow disturbances are sufficiently realized in the oil passages and in the cooling water passages owing to the embossing strips. Therefore, the heat exchanges are sufficiently improved between the oil and the cooling water, which flow through the radiator. Further, in the manifold parts, the area loaded with the oil pressure is reduced, thereby improving the oil pressure withstanding strength.
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