Laminated header, heat exchanger, air-conditioning apparatus, and method of joining a plate-like unit of a laminated header and pipe to each other

摘要

A laminated header (2) of the present invention is provided with a plate-shaped body (11) in which pieces of bare material (12_1-12_6) which form a first flow path and onto which a brazing material is not coated and pieces of cladding material (13_1-13_5) which form a second flow path and onto at least the front and back surfaces of which a brazing material is coated are mutually laminated so that the first flow path and the second flow path communicate, and are connected in a state where an end of a pipe is inserted into at least one flow path from between the first flow path and the second flow path. Two pieces of the bare material (12_1, 12_6) are laminated on the outermost side in the lamination direction of the plate-shaped body (11).