US 11,668,530 B2
Oil cooler
Hirotaka Kobayashi, Fujimi (JP); Yasuaki Suzuki, Asaka (JP); and Masahiro Ariyama, Yokohama (JP)
Assigned to MAHLE INTERNATIONAL GMBH, Stuttgart (DE); and MAHLE JAPAN LTD., Tokyo (JP)
Filed by MAHLE Japan Ltd., Tokyo (JP); and MAHLE INTERNATIONAL GmbH, Stuttgart (DE)
Filed on Mar. 11, 2020, as Appl. No. 16/815,229.
Application 16/815,229 is a division of application No. 14/972,496, filed on Dec. 17, 2015, granted, now 10,619,935.
Claims priority of application No. 2014-264673 (JP), filed on Dec. 26, 2014.
Prior Publication US 2020/0208917 A1, Jul. 2, 2020
Int. Cl. F28D 9/00 (2006.01)
CPC F28D 9/0093 (2013.01) [F28D 9/005 (2013.01); F28D 9/0056 (2013.01)] 2 Claims
OG exemplary drawing
 
1. An oil cooler comprising:
a plurality of core plates each of which has three oil pass holes where oil flows and three cooling water pass holes where cooling water flows;
a heat-exchanging section where the core plates are laminated to define an interpolate oil flow passage and an inter-plate cooling water flow passage alternately between an adjacent pair of the core plates, so as to permit oil and cooling water to mutually independently flow in a direction perpendicular to a core plate lamination direction while changing a flow direction by a U-turn, thereby proceeding in the core plate lamination direction; and
one end part located at one side of the core plate lamination direction, and provided with both an oil inlet for introducing oil into the heat-exchanging section and an oil outlet for draining oil out of the heat-exchanging section and with both a cooling water inlet for introducing cooling water into the heat-exchanging section and a cooling water outlet for draining cooling water out of the heat-exchanging section,
wherein the inter-plate oil flow passage and the inter-plate cooling water flow passage are formed between the core plates having both of the three oil pass holes and the three cooling water pass holes,
wherein the three cooling water pass holes include a pair of advancing cooling water pass holes and a retreating cooling water pass hole,
wherein a first bottom plate and a second bottom plate are attached to a bottom surface of the heat-exchanging section, and the second bottom plate includes a communication hole through which (i) one of the pair of advancing cooling water pass holes and (ii) the retreating cooling water pass hole communicate with each other, and includes a communication hole through which (i) one of the pair of advancing oil pass holes and (ii) the retreating oil pass hole communicate with each other, at a lowermost portion of the heat-exchanging section, and
wherein the oil cooler further comprises:
a first intermediate plate comprising a cooling water-blockage portion structured to block one of the pair of advancing cooling water pass holes in the core plate lamination direction; and
a second intermediate plate comprising an oil blockage portion structured to block one of a pair of advancing oil pass holes in the core plate lamination direction.