Precursor for inner housing of heat transfer device e.g. heat exchanger, has flange shaped extensions which are extended over the cross-sections between axial ends, and housing portions that are fastened with cross-sections

摘要

The precursor (2) has a main portion having flow through channel (8) and axial ends (10,12). The flange shaped extensions (18,20) are extended over the cross-sections (22,24) between the axial ends. The housing portions are fastened with the cross-sections. The precursor main portion is provided with upper portion (6) and base portion (4) which are connected together. Independent claims are included for the following: (1) inner housing; (2) heat transfer device; (3) method for manufacturing inner housing; and (4) method for manufacturing heat transfer device.