Title:
HEAT EXCHANGER AND MANUFACTURING METHOD THEREOF
Document Type and Number:
Japanese Patent JP2017101866
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To enable a stable heat transfer pipe to expand, in a fin-and-tube type heat exchanger using an aluminum-based heat transfer pipe with an inner surface groove.SOLUTION: A heat exchanger includes a fin 11 and a heat transfer pipe 10 with an inner surface groove connected to the fin 11 so as to expand the pipe. The heat transfer pipe 10 with an inner surface groove comprises aluminum or an aluminum alloy, and on the inner surface of the heat transfer pipe 10 with an inner surface groove, a hard layer with higher hardness than the aluminum or aluminum alloy is formed. The hard layer is formed of boehmite or alumite.SELECTED DRAWING: Figure 4
Inventors:
HOSONO TAKASHI
YANAGIDA AKIRA
HASHIZUME YOSUKE
KUME YOSHIO
YANAGIDA AKIRA
HASHIZUME YOSUKE
KUME YOSHIO
Application Number:
JP2015234658A
Publication Date:
June 08, 2017
Filing Date:
December 01, 2015
Export Citation:
Assignee:
DENSO CORP
DENSO AIRCOOL CORP
MITSUBISHI ALUMINIUM
DENSO AIRCOOL CORP
MITSUBISHI ALUMINIUM
International Classes:
F28F1/40; B21D53/08; F28F1/00; F28F9/16; F28F13/18; F28F19/06; F28F21/08
Domestic Patent References:
| JP2000205782A | 2000-07-28 | |||
| JP2008266738A | 2008-11-06 | |||
| JPH0874067A | 1996-03-19 | |||
| JPH04253531A | 1992-09-09 | |||
| JPH10160374A | 1998-06-19 | |||
| JP2012180961A | 2012-09-20 | |||
| JP2000218332A | 2000-08-08 |
Foreign References:
| WO2014077382A1 | 2014-05-22 |
Attorney, Agent or Firm:
Patent Business Corporation Kaisei Patent Office
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