Method of manufacturing heat exchanger and heat exchanger
AssigneeDenso Corporation
InventorsHaruhiko Watanabe, Sumio Susa, Masaki Harada
Life of this patent
Estimating the term…
Abstract
A heat exchanger has a core including tubes and a core plate coupled to the core. The core plate has a coupling wall on which tube insertion holes are formed for receiving ends of the tubes. The coupling wall has an end portion and a clearance portion both coupled to the tubes. The clearance portion is integrally connected to the end portion and spaced from an imaginary plane, on which the end portion is located. A paste brazing material is applied to a joining portion between the core plate and each tube by a brazing material applying device through a space provided between the clearance portion and the imaginary plane.
Claims15
A method of manufacturing a heat exchanger, comprising:
- forming a core plate having a coupling wall for coupling to tubes, wherein the coupling wall includes an end portion and a clearance portion, the clearance portion is spaced from an imaginary plane on which the end portion is located, and tube insertion holes are formed across the end portion and the clearance portion;
- preliminarily fixing the core plate and the tubes by inserting ends of the tubes into the tube insertion holes of the core plate;
- applying a paste brazing material to joining portions between the core plate and the tubes by a brazing material applying device;
- and
- heating the preliminarily fixed core plate and tubes for brazing the joining portions.
A heat exchanger comprising:
- a core having tubes and fins;
- and
- a header tank having a core plate, the core plate having a coupling wall formed with tube insertion holes, wherein ends of the tubes are received in and brazed with the tube insertion holes, wherein the coupling wall includes an end portion and a clearance portion, the end portion is located on an imaginary plane, and the clearance portion is spaced from the imaginary plane.
Dependencies are inferred from the claim text.