Title:
FLAT HEAT-EXCHANGING TUBE, HEAT MEDIUM HEATING DEVICE USING SAME, AND VEHICULAR AIR-CONDITIONING DEVICE
Document Type and Number:
WIPO Patent Application WO/2015/041065
Kind Code:
A1
Abstract:
Provided are a flat heat-exchanging tube that can improve heat transmissibility by reducing thermal contact resistance, a heat medium heating device, and a vehicular air-conditioning device. This flat heat-exchanging tube comprises: a flat tube (22) constituted by a pair of molded plates (22A, 22B); and a wavy inner fin (23A, 23B) inserted between the molded plates (22A, 22B), the wavy inner fin having a top part (23C) protruding toward one side and a top part (23D) protruding toward the other side that are brazed to respective inner surfaces of the pair of molded plates (22A, 22B). The wavy inner fin (23A, 23B) includes a tube-expansion permitting part (23E) that permits a wall surface between both top parts (23C, 23D) to deform in a direction in which the distance between the top parts (23C, 23D) expands. The flat heat-exchanging tube (14) is allowed to expand by means of the tube-expansion permitting part (23E) in a state where the top parts (23C, 23D) are brazed between the pair of molded plates (22A, 22B).
Inventors:
KOMINAMI SATOSHI (JP)
NAKADO KOJI (JP)
NAKADO KOJI (JP)
Application Number:
PCT/JP2014/073401
Publication Date:
March 26, 2015
Filing Date:
September 04, 2014
Export Citation:
Assignee:
MITSUBISHI HEAVY IND AUTOMOTIVE THERMAL SYS CO LTD (JP)
International Classes:
F28F1/40; B21D53/04; B60H1/00; B60H1/22; F28D1/03; F28F3/06
Domestic Patent References:
WO2006025465A1 | 2006-03-09 |
Foreign References:
JPH0719781A | 1995-01-20 | |||
JP2003154449A | 2003-05-27 | |||
JPH0732377U | 1995-06-16 | |||
US20100139897A1 | 2010-06-10 | |||
JP2005055092A | 2005-03-03 | |||
JPS58164995A | 1983-09-29 | |||
US20110005725A1 | 2011-01-13 | |||
JPH06347184A | 1994-12-20 | |||
JP2012218557A | 2012-11-12 | |||
JPH0410288U | 1992-01-29 | |||
US20130045411A1 | 2013-02-21 |
Attorney, Agent or Firm:
FUJITA, Takaharu et al. (JP)
Takaharu Fujita (JP)
Takaharu Fujita (JP)
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