Metal heat exchanger tube

US12298089B2 · kind B2 · utility

Assignee

• WIELAND-WERKE AG · DE

Inventors

• Achim Gotterbarm · Blaustein, DE
• Manfred Knab · Blaustein, DE
• Ronald Lutz · Round Rock, US

Key dates

• Filing date: Oct 7, 2021
• Grant date: May 13, 2025
• Expiry date: Apr 23, 2042

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F28F2215/10
• WIPO field: Thermal processes and apparatus
• WIPO sector: Mechanical engineering

Abstract

A metal heat exchanger tube having integral fins formed on the tube outside and having a fin foot, fin flanks and a fin tip. The fin foot protrudes radially from the tube wall, and a channel is formed between the fins. Spaced-apart additional structures are arranged in a channel base and divide the channel between the fins into segments. The additional structures reduce the throughflow area in the channel and limit fluid flow during operation. First additional structures are radial projections emerging from the channel base and are delimited radially by an end surface located between the channel base and the fin tip. Material protrusions in the form of second additional structures lie at the location of the projections. The material protrusions are arranged between the end surface and the fin tip and lie laterally on the fin flank, and extend further axially and radially than circumferentially.