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US 5,924,485 AGranted
Heat exchanger constructed by a plurality of tubes
AssigneeDenso Corporation
InventorsOsamu Kobayashi, Ken Yamamoto
Life of this patent
Estimating the term…
Abstract
An inside wall surface of a cap covering the end portion of a header tank is formed into a spherical shape, and a connecting portion between the inside wall surface of the cap and a inside wall surface of a tank portion is separated away from a connecting portion between the inside wall surface of the tank portion and an outside wall surface of a tube. Thus, the brazing material is suctioned into both connecting portions (both gaps) sufficiently, and both connecting portions are brazed firmly.
Claims8
A heat exchanger comprising:
- a plurality of tubes through which fluid flows;
- a tank portion provided at an end of said tubes, and extending in a direction perpendicular to a longitudinal direction of said tubes, said tank portion forming a columnar inside space communicating with said tubes, and including a plurality of insertion holes into which said tubes are inserted;
- and
- a cap covering an end portion of said tank portion, and having a concave inside wall surface that, together with an inside wall surface of said tank portion defines a convex tank end portion including a smooth transition surface at a first connecting portion between said concave inside wall surface and said inside wall surface of said tank portion, wherein
- said inside wall surface of said tank portion and an outside wall surface of said tube are connected to each other at a second connecting portion, and
- said first connecting portion is separated away from said second connecting portion by a predetermined distance.
3 more elements
A heat exchanger comprising:
- a plurality of tubes through which fluid flows;
- a tank portion provided at an end of said tubes, and extending in a direction perpendicular to a longitudinal direction of said tubes, said tank portion having an inside wall surface forming a columnar inside space communicating with said tubes, and including a plurality of insertion holes into which said tubes are inserted;
- and
- a cap covering an end portion of said tank portion, and having a concave inside wall surface which faces said inside space, said inside wall surface of said tank portion tangentially engaging said concave inside wall surface of said cap to form a first connection portion, wherein
- said inside wall surface of said tank portion and an outside wall surface of said tube are connected to each other at a second connecting portion, and
- said first connection portion is separated away from said second connecting portion by a predetermined distance.
3 more elements
A heat exchanger comprising:
- a plurality of tubes through which fluid flows;
- a tank portion provided at an end of said tubes, and extending in a direction perpendicular to a longitudinal direction of said tubes, said tank portion having an inside wall surface forming a columnar inside space communicating with said tubes, and including a plurality of insertion holes into which said tubes are inserted;
- and
- a cap covering an end portion of said tank portion, and having a concave inside wall surface which faces said inside space, said inside wall surface of said tank portion being generally parallel to said concave inside wall surface of said cap at a first connecting portion, wherein
- said inside wall surface of said tank portion and an outside wall surface of said tube are connected to each other at a second connecting portion, and
- said first connection portion is separated away from said second connecting portion by a predetermined distance.
3 more elements
Dependencies are inferred from the claim text.