Patent · US Active

Metal heat exchanger tube

US11073343B2 · kind B2 · utility

2Cited by

49References

17Claims

0Family size

Assignee

WIELAND-WERKE AG · DE

Inventors

Achim Gotterbarm · Blaustein, DE
Ronald Lutz · Round Rock, US
Jean El Hajal · Ulm, DE
Manfred Knab · Blaustein, DE

Key dates

Filing date	Feb 10, 2015
Grant date	Jul 27, 2021
Priority date	—
Expiry date	Nov 16, 2035

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF28D2021/0064
WIPO fieldThermal processes and apparatus
WIPO sectorMechanical engineering

Abstract

A metal heat exchanger tube has integral ribs formed on the outside of the tube. The ribs have a rib base, rib flanks, and a rib tip. The rib base protrudes substantially radially from the tube wall. A channel is formed between the ribs, in which channel additional structures spaced apart from each other are arranged. The additional structures divide the channel between the ribs into segments. The additional structures reduce the cross-sectional area in the channel between two ribs through which flow is possible by at least 60% locally and, at least thereby, limit a fluid flow in the channel during operation.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.