Global Patent Index - EP 2388545 A3

EP 2388545 A3 20180321 - Folded tube for an evaporator and evaporator assembly therewith

Title (en)

Folded tube for an evaporator and evaporator assembly therewith

Title (de)

Gefaltetes Rohr für einen Verdampfer und Verdampferanordnung damit

Title (fr)

Tube plié pour évaporateur et assemblage d'évaporateur comportant ce tube

Publication

EP 2388545 A3 20180321 (EN)

Application

EP 11166227 A 20110516

Priority

  • US 34652210 P 20100520
  • US 201113107045 A 20110513

Abstract (en)

[origin: EP2388545A2] An evaporator assembly having a first header, a second header, at least two banks of evaporator tubes extending therebetween and in hydraulic communication with the first and second headers. At least one of the evaporator tube may be folded from a unitary strip clad aluminum folded having a thickness (t). The evaporator tube includes a height (h) which is measured from the bottom exterior surface to the top exterior surface, and a corner radius (r c ) defined by the transition radius from the flange segments to the channel walls. The bottom wall includes a width (2w), the corrugated portion includes alternating flange segments abutting the interior surface and channel walls connecting the alternating flange segments, at least one of the alternating adjacent flange segments includes a length (a) cooperating with adjacent the channel walls to define a channel having a width (b). The evaporator tube also includes a number of ports per millimeter width (PPMW) in a range of 0.40 to 1.0 as defined by the equation PPMW = 2/(a+b+t); a Port Shape (PS) ratio of 0.05 to 0.6 as defined by the equation PS ratio = a/b; a non-dimensional gauge (NDG) ratio of 0.11 to 0.21 as defined by the equation NDG ratio = t/h; and a non-dimensional corner radius (NDCR) ratio of 0.10 to 0.5 as defined by the equation NDCR ratio = r c /2t.

IPC 8 full level

F28D 1/03 (2006.01); F28D 1/053 (2006.01); F28F 1/02 (2006.01)

CPC (source: EP US)

F28D 1/0391 (2013.01 - EP US); F28D 1/05383 (2013.01 - EP US); F28F 1/022 (2013.01 - EP US)

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

Designated extension state (EPC)

BA ME

DOCDB simple family (publication)

EP 2388545 A2 20111123; EP 2388545 A3 20180321; CN 202216603 U 20120509; US 2011284195 A1 20111124

DOCDB simple family (application)

EP 11166227 A 20110516; CN 201120235811 U 20110517; US 201113107045 A 20110513