Global Patent Index - EP 3679312 A4

EP 3679312 A4 20210331 - DOUBLE TUBE FOR HEAT EXCHANGE

Title (en)

DOUBLE TUBE FOR HEAT EXCHANGE

Title (de)

DOPPELROHR FÜR EINEN WÄRMETAUSCHER

Title (fr)

TUBE DOUBLE POUR ÉCHANGE DE CHALEUR

Publication

EP 3679312 A4 20210331 (EN)

Application

EP 18854722 A 20180904

Priority

  • KR 20170114094 A 20170906
  • KR 2018010315 W 20180904

Abstract (en)

[origin: WO2019050258A1] Disclosed herein is a double tube for heat exchange. The double tube for heat exchange includes: a spiral pipe having ridges and valleys alternately formed on a circumferential surface thereof along a spiral track thereof and guiding a first fluid to flow therethrough; and an outer pipe receiving the spiral pipe axially inserted thereinto and guiding a second fluid to flow along the circumferential surface of the spiral pipe such that the second fluid exchanges heat with the first fluid, wherein the ridges contact with an inner surface of the outer pipe such that no gap is formed between the ridges and the inner surface of the outer pipe.

IPC 8 full level

F16L 9/18 (2006.01); F28D 7/10 (2006.01); F28F 1/06 (2006.01)

CPC (source: EP KR)

F16L 9/18 (2013.01 - KR); F16L 53/32 (2017.12 - EP); F28D 7/106 (2013.01 - EP KR); F28F 1/06 (2013.01 - KR); F28F 1/426 (2013.01 - EP); F28F 9/0248 (2013.01 - EP); F28F 2210/06 (2013.01 - EP)

Citation (search report)

Designated contracting state (EPC)

AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

DOCDB simple family (publication)

WO 2019050258 A1 20190314; EP 3679312 A1 20200715; EP 3679312 A4 20210331; JP 2020531790 A 20201105; KR 20200027061 A 20200311

DOCDB simple family (application)

KR 2018010315 W 20180904; EP 18854722 A 20180904; JP 2020531412 A 20180904; KR 20207006575 A 20180904