Mahle Filter Systems Japan Corporation

Tadashi Nishikoba

Masahiro Ariyama

Kenji Wada

Shozo Wakamatsu

Kakuei Kunii

What is disclosed is a heat exchanger including: a core including a plurality of core plates, first and second passages, and a vertical passage; a base plate including a passage port; and a distance plate; wherein the first vertical passage and the passage port are arranged apart from each other in a direction orthogonal to a stacking direction of the core plates, and wherein the distance plate includes a bottom wall part and a swelling part, the bottom wall part being a thin plate-shaped and being joined to an upper surface of the base plate, the swelling part swelling up in the stacking direction from the bottom wall part so as to surround a circumference of a communication passage which communicates the first vertical passage with the passage port and being joined to a lowermost surface of the core in a flange part of a tip of the swelling part.

Heat exchanger

A core unitof a heat exchanger includes a plurality of core plates that are stacked on one another to alternately constitute oil passagesand cooling water passagesin which oil that is heat-exchanged in the core unitis guided to an outlet portafter passing through a top connecting passageand an oil outlet passage Land in which part of the oil is led from a lower end of an upper/lower oil passage Lis guided to the outlet portthrough an auxiliary passageso that the amount of oil flowing in the oil outlet passage Lis reduced thereby reducing a passage resistance.

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Fujimino, Japan

Tadashi Nishikoba