Title:
HEAT EXCHANGER
Document Type and Number:
WIPO Patent Application WO/2021/060103
Kind Code:
A1
Abstract:
A heat exchanger (1) is provided with a first metal tube (20), second metal tubes (30), and metal joint portions (J) which are formed through solidification of a melted joining material and which join the first metal tube (20) and the second metal tubes (30). The heat exchanger (1) causes a fluid flowing through the first metal tube (20) to exchange heat with a fluid flowing through the second metal tubes (30). The joint portions (J) of the heat exchanger (1) contain copper. The melting temperature of the joint portions (J) is higher than the annealing temperature of the first metal tube (20) and the second metal tubes (30). The tensile strength of the first metal tube (20) and the second metal tubes (30) is greater than the classification symbol or the temper designation O.
Inventors:
KIKUNO TOMONORI (JP)
SUETAKE ITSUKI (JP)
SUETAKE ITSUKI (JP)
Application Number:
PCT/JP2020/035060
Publication Date:
April 01, 2021
Filing Date:
September 16, 2020
Export Citation:
Assignee:
DAIKIN IND LTD (JP)
International Classes:
B23K1/00; B23K35/26; B23K35/30; C22C9/02; C22C13/00; F28D7/00
Domestic Patent References:
| WO2017007011A1 | 2017-01-12 | |||
| WO2010114874A2 | 2010-10-07 |
Foreign References:
| JP2011224657A | 2011-11-10 | |||
| JP2007333271A | 2007-12-27 | |||
| JP2005297011A | 2005-10-27 | |||
| JP2019038002A | 2019-03-14 | |||
| JP2011224657A | 2011-11-10 |
Other References:
See also references of EP 4032647A4
Attorney, Agent or Firm:
MAEDA & PARTNERS (JP)
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