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US 7,255,158 B2Granted
Heat exchanger
AssigneeDenso Corporation
InventorTatsuo Ozaki
Life of this patent
Estimating the term…
Abstract
A protruding portion protruding toward the outside a tank is formed on a core plate in a range corresponding to a straight portion of a flat tube inserted and joined to the core plate. Due to this structure, a joining portion of the tube to the core plate is three-dimensionally formed and a joining portion length is extended. Therefore, thermal stress generated in the tube can be diffused from the joining portion of the tube to the core plate.
Claims4
A heat exchanger comprising:
- a plurality of tubes, the shapes of which are flat, laminated on each other;
- a core plate portion extended in a laminating direction of the plurality of tubes, into the insertion holes of which end portions of the tubes in the longitudinal direction are inserted and joined;
- and
- tanks communicated with the plurality of tubes, wherein
- a cross-section perpendicular to the longitudinal direction of the tube includes a pair of straight portions opposed to each other and a wall face portion for connecting end portions of the pair of straight portions to each other, a protruding portion extending in the laminating direction is formed toward the outside of the tank in a region of the core plate portion, in which the insertion hole is formed, corresponding the straight portion, and
- a straight portion joining portion of the insertion hole is located on the outside of the tank with respect to a wall face portion joining portion of the insertion hole.
3 more elements
Dependencies are inferred from the claim text.