Condensation heat exchanger for domestic application, has bundles of tubes mounted inside casing made of heat-resistant plastic material, containment mechanism to ensure mechanical containment of bundle for absorbing thrust loads

摘要

The heat exchanger has a helically bound bundle (2) of tubes fixedly mounted inside a casing fitted with a pipe for evacuating gases generated by a burner (6). The casing (1) is made of a heat-resistant plastic material. A containment mechanism comprising a tie rod (5) and an annular plate (30) ensures mechanical containment of the bundle in an axial direction to absorb thrust loads resulting from fluid internal pressure.