Heat exchanger for heating or cooling of liquid, has helical fluid flow path that is arranged between outer cover and inner cover in fluid chamber

摘要

The heat exchanger (10) has fluid chamber (12) that includes cylindrical inner cover (20) which is arranged concentrically inside the outer cover (14). A helical fluid flow path (22) is arranged between the outer cover and inner cover in fluid chamber. The inner cover and outer cover are welded together. The guide plates (24) are connected inside the fluid path. An independent claim is included for method for cooling or heating fluid.