| 摘要 |
A method for fabricating a heat exchanger assembly (20) includes pressing a pair of headers (30, 38) into refrigerant tubes (76). A notch (50) is cut axially into header ends (32, 40). An inner radial abutment (24) is formed in each of the refrigerant conduits (22, 56), which are then each inserted through an open end cap (26). An outer radial abutment (28) is formed in each of the refrigerant conduits (22, 56) so that the open end caps (26) are retained in position between the radial abutments (24, 28). The radial abutments (24, 28) can comprise a bead, a radially inwardly extending shoulder, an outwardly extending shoulder, or an expansion beneath the open end caps (26). A tool presses each subassembly into the corresponding headers (30, 38) until the tool reaches the corresponding notch bottom (52).
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