Title:
HEAT EXCHANGER AND METHOD FOR MANUFACTURING HOME APPLIANCE INCLUDING HEAT EXCHANGER
Document Type and Number:
WIPO Patent Application WO/2021/029556
Kind Code:
A1
Abstract:
A heat exchanger according to the present invention comprises: a copper pipe forming a circulation path for a refrigerant; and a plurality of fins which are arranged at positions spaced apart from each other along one direction and coupled to the outer circumferential surface of the copper pipe. The copper pipe includes: a plurality of straight tubes extending along the direction in which the plurality of fins are arranged; and a plurality of return bends which are connected through welding to one end of one of the plurality of straight tubes and one end of another of the straight tubes, wherein a burr having a circumference larger than the outer diameter of each straight tube is formed on both ends of each of the plurality of straight tubes, the distance between the edge of the burr and the outer surface of the straight tube is 0.4 mm to 1.8 mm, and coating layers providing corrosion resistance are formed on the surfaces of the return bends, the surfaces of welded portions formed on both ends of each of the return bends, and the surfaces of the burrs.
Inventors:
HAN SANGKWON (KR)
KIM MYEONGDEOK (KR)
CHOI JEONGGEUN (KR)
KIM MYEONGDEOK (KR)
CHOI JEONGGEUN (KR)
Application Number:
PCT/KR2020/009639
Publication Date:
February 18, 2021
Filing Date:
July 22, 2020
Export Citation:
Assignee:
LG ELECTRONICS INC (KR)
International Classes:
F28F19/04; C09D7/61; C09D7/63; C09D175/04; D06F58/20
Domestic Patent References:
| WO2015056416A1 | 2015-04-23 |
Foreign References:
| KR20130138484A | 2013-12-19 | |||
| JP2006125659A | 2006-05-18 | |||
| KR20170117130A | 2017-10-20 | |||
| KR20140059752A | 2014-05-16 | |||
| KR20000068214A | 2000-11-25 |
Attorney, Agent or Firm:
KBK & ASSOCIATES (KR)
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