LAMINATED HEADER, HEAT EXCHANGER, AND HEAT PUMP DEVICE

摘要

A laminated header (10) wherein, when a flat tube (20) is inserted into the aperture part (12A) of a bare material (12) and the tip end part (20A) of the flat tube (20) makes contact with a stopper (12B), a space (30) is formed between the flat tube (20), a cladding material (11), and the bare material (12). The space (30) is formed of a first space (30a), which is formed near the contact boundary surface of the flat tube (20) and the cladding material (11), a second space (30b), which at least is narrower than the first space (30a) and is formed near the contact boundary surface of the bare material (12) and the cladding material (11), and a third space (30c), which at least is narrower than the first space (30a) and is formed near the contact boundary surface of the bare material (12) and the flat tube (20).