Flow heater, has embossments that are formed together with surface of casing tube of inner tubular heating element, where embossments are formed as semi-circular embossments along cross section planes of tubular heating element

摘要

The heater (1) has an outer cladding tube (3) whose ends are tightly connected to an inner tubular heating element (2). The cladding tube has connections for a liquid inlet and a liquid outlet, and embossments (3.2) that form a labyrinth for liquid between the inlet and the outlet of the liquid. The embossments are formed together with a surface of a casing tube (2.1) of the tubular heating element. The embossments are formed as semi-circular embossments along cross section planes of the tubular heating element. The casing tube and the cladding tube exhibit a material connection.