WELDED HEAT EXCHANGER WITH GROMMET CONSTRUCTION

摘要

A heat exchange comprising a core assembly (20) having a plurality of tubes (22) connected by an array of fins (24), with ends of the tubes extending fr om the fin array on at least one side of the core assembly (20) and resilient, polymeric grommets (40) disposed around the tube ends. The exchanger include s a tank portion for receiving fluid entering or leaving the core assembly and a header portion (38) having openings to receive the tube ends and grommets (4 0) to create a sealed, fluid-tight tube-to-header joint. There is provided a reinforcing member across the opening of the tube ends extending from the tu be end opening to the portion of the tube end around which the grommet (40) is disposed without substantially extending into the fin array portion of the core assembly (20). The header portion (38) comprises a substantially planar base having openings therein with side (32) and end walls (34) extending out of the plane of the base and connected by one or more fluid-tight welds to t he tank portion (60).