Title:
METHOD OF PRODUCING HEAT EXCHANGER AND METHOD OF USING SAME
Document Type and Number:
WIPO Patent Application WO/2013/080573
Kind Code:
A1
Abstract:
The present invention makes it possible to readily and reliably weld plates together in the production of a heat exchanger in which plates are placed atop each other and welded together, and thereafter a fluid is injected into a predetermined region, which is swelled and deformed to form a flow path. The present invention also makes it possible to readily vacuum from between plates and to inject fluid into a swelled part. In a peripheral welding step, a plurality of plates (2), (3) are superposed and the full periphery is welded (17) at a peripheral end face. In a subsequent pressure reduction step, air remaining in a gap between the plates is suctioned and discharged from openings (11), (12) previously provided to surfaces of the plates. In a subsequent interior welding step, the plates are welded together (6) at the surfaces of the plates in a state where the gap between the plates is kept under reduced pressure, and the plates are divided into a swelled part (4) and a non-swelled part (5). In a subsequent swelling step, fluid is injected into the swelled part (4), which is then swelled and deformed. In the interior welding step, keeping the gap between plates under reduced pressure allows for reliable welding between the plates. Because the openings are provided to the surfaces of the plates, the pressure reduction step and the swelling step are readily carried out.
Inventors:
MATSUNAGA KATSUTOSHI (JP)
MATSUYA HISAYOSHI (JP)
MATSUYA HISAYOSHI (JP)
Application Number:
PCT/JP2012/050076
Publication Date:
June 06, 2013
Filing Date:
January 05, 2012
Export Citation:
Assignee:
MIURA KOGYO KK (JP)
MATSUNAGA KATSUTOSHI (JP)
MATSUYA HISAYOSHI (JP)
MATSUNAGA KATSUTOSHI (JP)
MATSUYA HISAYOSHI (JP)
International Classes:
F28F3/14; B21D53/04; B23K26/00; B23K26/21; F28D1/03
Foreign References:
| JPS56105874A | 1981-08-22 | |||
| JP3065777U | 2000-02-08 | |||
| JP2008001987A | 2008-01-10 | |||
| JP2008155226A | 2008-07-10 | |||
| JP2010281543A | 2010-12-16 | |||
| JP2002350084A | 2002-12-04 | |||
| JP2001021274A | 2001-01-26 |
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