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Title:
FLAT TUBE FOR HEADER-PLATE-LESS HEAT EXCHANGER
Document Type and Number:
WIPO Patent Application WO/2016/017788
Kind Code:
A1
Abstract:
Provided is a flat tube for a header-plate-less heat exchanger having favorable yield. The flat tube for a header-plate-less heat exchanger has an inner plate 2 and an outer plate 3 that are each press-molded from a metal plate and are curved/folded into a groove shape comprising a groove bottom section 7 and two side wall sections 8. Both plates 2, 3 are such that the outer plate 3 is fitted to the outside of the inner plate 2 in a manner such that the groove bottom sections 7 oppose each other, and an expanded opening 9 in the thickness direction is formed at both ends of the plates 2, 3. The inner peripheral length (2×L1+L2) of the lateral cross section of the expanded opening 9 of the inner plate 2 is formed to be the same length as the inner peripheral length of the lateral cross sections other than of the expanded opening 9.

Inventors:
MAEGAWA KAZUO (JP)
SUGIMOTO HIROHITO (JP)
SEKIYA MASAHITO (JP)
Application Number:
PCT/JP2015/071731
Publication Date:
February 04, 2016
Filing Date:
July 24, 2015
Export Citation:
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Assignee:
T RAD CO LTD (JP)
International Classes:
F28F3/10; B21D53/04; F28D1/053; F28F3/08
Foreign References:
JP2013096632A2013-05-20
JP2011163642A2011-08-25
JP2012247093A2012-12-13
JP2004028469A2004-01-29
EP0874210A21998-10-28
GB2384299A2003-07-23
Other References:
See also references of EP 3176531A4
Attorney, Agent or Firm:
KUBOTA TAKUBI (JP)
Takumi Kubota (JP)
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