Patent ID: 11904421
Assignee: MODINE MANUFACTURING COMPANY
Field: Machine tools (Mechanical engineering)
Classification: CPC B  F | IPC B

Claim 6:
7. A method of making a heat exchanger, the method comprising:
arranging each of a plurality of tubes in respective header slots of a header;
coupling a cover to the header to cover a liquid-side surface of the header and to cover ends of each of the plurality of tubes;
applying flux to an air-side surface of the header and to the plurality of tubes, and
brazing each of the plurality of tubes to their respective header slots,
wherein coupling the cover to the header is performed before applying flux to the air-side surface of the header and to the plurality of tubes,
wherein applying flux is performed before brazing each of the plurality of tubes to their respective header slots, and
wherein the cover is removed after the step of brazing each of the tubes of the plurality of tubes to said header slot of the plurality of header slots.