EP 2916091 B1 20191023 - DOUBLE-TUBE HEAT EXCHANGER AND REFRIGERATING CYCLE DEVICE
Title (en)
DOUBLE-TUBE HEAT EXCHANGER AND REFRIGERATING CYCLE DEVICE
Title (de)
DOPPELROHR-WÄRMETAUSCHER UND KÄLTEKREISLAUFVORRICHTUNG
Title (fr)
ÉCHANGEUR DE CHALEUR À DEUX TUBES ET DISPOSITIF À CYCLE DE RÉFRIGÉRATION
Publication
Application
Priority
- JP 2012075530 W 20121002
- JP 2013073688 W 20130903
Abstract (en)
[origin: EP2916091A1] A double pipe heat exchanger includes an inner pipe 2 inside which a first fluid passes, an outer pipe 1 that has a diameter larger than the diameter of the inner pipe 2 and that covers the inner pipe 2, and second fluid passes through a space between the outer pipe 1 and the inner pipe 2, and a heat transfer area enlargement pipe 3 that is provided in the space and that has a projection-depression shape in which a length in the pipe-circumferential direction of inner contact portions 6 to be contact areas with the outer wall of the inner pipe 2 is made to be larger than a length in the pipe-circumferential direction of outer contact portions 7 to be contact areas with the inner wall of the outer pipe 1, and in addition, fin portions between the outer contact portion 7 and the inner contact portion 6 that traverse the space in a pipe cross section come into contact with the outer wall of the inner pipe 2 and the inner wall of the outer pipe 1 in oblique directions.
IPC 8 full level
F28D 7/10 (2006.01); F28F 1/40 (2006.01); F28F 13/12 (2006.01)
CPC (source: EP US)
F25B 40/00 (2013.01 - EP US); F28D 7/106 (2013.01 - EP US); F28F 1/40 (2013.01 - EP US); F25B 2400/13 (2013.01 - EP US); F28D 2021/0068 (2013.01 - EP US); F28F 1/105 (2013.01 - EP US)
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)
EP 2916091 A1 20150909; EP 2916091 A4 20160810; EP 2916091 B1 20191023; CN 104704311 A 20150610; CN 104704311 B 20170301; CN 203605763 U 20140521; JP 5944009 B2 20160705; JP WO2014054370 A1 20160825; US 2015241132 A1 20150827; WO 2014054117 A1 20140410; WO 2014054370 A1 20140410
DOCDB simple family (application)
EP 13843545 A 20130903; CN 201320613402 U 20130930; CN 201380051921 A 20130903; JP 2012075530 W 20121002; JP 2013073688 W 20130903; JP 2014539645 A 20130903; US 201314432630 A 20130903