HEAT EXCHANGER AND METHOD FOR MANUFACTURING SAME

Title:

HEAT EXCHANGER AND METHOD FOR MANUFACTURING SAME

Document Type and Number:

WIPO Patent Application WO/2018/221437

Kind Code:

A1

Abstract:

According to the present invention, a heat transfer body 3 having an inner space 7 in which a high temperature-side fluid is generated or flows is prepared. The heat transfer body 3 is a component of a heat exchanger, and is a wall formed of a copper material and surrounding an inner space 7 in which one among a high-temperature side fluid and a low-temperature side fluid is present. Inside the wall, a flow passage 9 is formed in which the other one among the high-temperature side fluid and the low-temperature side fluid flows. An LMD layer is directly formed, through an LMD process, on the outer peripheral surface 3a of the heat transfer body 3. In the LMD process, a metal material is supplied to a supply position on the peripheral surface 3a of the heat transfer body 3, the supply position is irradiated with a laser beam to melt both the outer peripheral surface 3a and the metal material, whereby an LMD layer 5 composed of a metal material and bonded to the peripheral surface 3a is formed. The energy density of the laser beam is set to a level high enough to melt both the metal material and the outer peripheral surface 3a.

Inventors:

MASUDA IDEO (JP)
KATO TOSHIKI (JP)
INOUE TAKUMA (JP)
SASAKI MASAHIRO (JP)

Application Number:

PCT/JP2018/020293

Publication Date:

December 06, 2018

Filing Date:

May 28, 2018

Export Citation:

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Assignee:

IHI AEROSPACE CO LTD (JP)
JAPAN AEROSPACE EXPLORATION (JP)

International Classes:

F28D7/10; B23K26/00; B23K26/342; F02K9/64; F28F21/08

Foreign References:

JP2016135905A	2016-07-28
JPH04319084A	1992-11-10
JP2011147947A	2011-08-04
JPS5823069B2	1983-05-12

Other References: