Tube heat exchanger - with ducts formed by plates inserted between helical tubes from outside

摘要

A tube heat exchanger, comprising a cylindrical housing, cylindrical core and helical tubes between these, with a helical path formed around the tubes by segmental plates inserted radially from outside between the turns of the helix, as in the partn patent is improved by the segmental portions being strip or trapezoidal shaped arranged with and without overlapping and supported in position, especially by radial clamping and/or webs or strips. Typically a series of plates project perpendicularly from a flexible strip, so that this strip can be wound around the tubes with the plates projection inwards between the turns.