Metal heat exchanger tube

US12298088B2 · kind B2 · utility

Assignee

• WIELAND-WERKE AG · DE

Inventors

• Achim Gotterbarm · Blaustein, DE
• Manfred Knab · Blaustein, DE
• Ronald Lutz · Round Rock, US
• Zhong Luo · Shanghai, CN
• Jianying Cao · San Jose, US

Key dates

• Filing date: Oct 7, 2021
• Grant date: May 13, 2025
• Expiry date: Mar 7, 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. The fins have a fin foot, fin flanks and a fin tip, and the fin foot protrudes radially from the tube wall. The tube includes a channel with a channel base and spaced-apart additional structures dividing the channel between the fins into segments and limiting fluid flow in the channel during operation. First additional structures are radially outwardly directed projections each with an end surface located between the channel base and the fin tip. Cavities in the form of second additional structures are disposed at the location of the projections between an end surface and the fin tip such that the cavities lie laterally on the fin flank and are open in the axial direction.