Area heater element, method for producing same and tool

摘要

The element (10) has a support plate (11) at which a piping system (13) is defined with the help of transfer of heat metal sheets (14a-14f), and an input terminal (15) and an output terminal (16). The input terminal and the output terminal are provided with a connection pipe portion (17) with a cross-section connection (18). A set of parallel switched spacer branches (19a-19c) is arranged with rectilinearly trained line sections (20a-20f). Each line section is arranged along a common flow direction (22) and has a pipe cross-section (24) that is smaller than connection cross-section. Independent claims are also included for the following: (1) a method for manufacturing a surface heat exchange element (2) a tool for manufacturing a surface heat exchange element.