Patent · US Active

Heat exchanger tube

US10976115B2 · kind B2 · utility

0Cited by

21References

16Claims

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	May 17, 2017
Grant date	Apr 13, 2021
Priority date	—
Expiry date	Nov 17, 2037

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF28F1/422
WIPO fieldThermal processes and apparatus
WIPO sectorMechanical engineering

Abstract

The invention relates to heat exchanger tube having a longitudinal tube axis; axially parallel or helically circumferential continuous fins are formed from the tube wall on the outer tube face and/or inner tube face, and continuous primary grooves are formed between adjacent fins; the fins have at least one structured zone on the outer tube face and/or inner tube face, said structured zone being provided with a plurality of projections which project from the surface an have a height such that the projections are separated by notches. According to the invention, the projections are arranged in groups which are periodically repeated along the extension of the fin. Furthermore, at least two notches between the projections within the group have a varying notch depth in a fin.

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