Patent ID: 6929060
Filing Date: 2005-08-16
Classification: B29C,F28F,Y10T

Abstract:
1. A heat exchanger, comprising: a tube bottom made of pressure-resistant and temperature-resistant plastic selected from the group consisting of PU (polyurethane), synthetic resin, epoxy resin, and cross-linked PU, said tube bottom having a trough-shaped configuration and provided with a circumferential flange; a plurality of tubes disposed in side-by-side relationship in the tube bottom and forming at least indirectly part of a distribution and/or collecting chamber, said tubes being made of metal selected from the group consisting of steel, vanadium, copper, and brass, wherein the tubes have tube ends which are each provided with a circumferential securing member to inhibit extraction of the tubes from the tube bottom by anchoring the tube ends with the securing member in the tube bottom through a casting process or injection process; and a plurality of metallic threaded sleeves formed in the flange of the tube bottom through a casting process or injection process.