HEAT-EXCHANGE PIPE, HEAT-EXCHANGER UNIT USING SAME, AND CONDENSING BOILER USING SAME

WIPO Patent Application WO/2019/235779

A1

A heat-exchanger unit according to the present invention comprises: a sensible-heat heat-exchange portion arranged in a sensible-heat heat-exchange area for receiving sensible heat generated by a combustion reaction and thereby heating water, the sensible-heat heat-exchange portion having a sensible-heat heat-exchange pipe for receiving the water and causing same to flow through the interior thereof, thereby forming a sensible-heat channel along which the water flows; and a latent-heat heat-exchange portion positioned downstream of the sensible-heat heat-exchange area with reference to a first reference direction along which combustion gas generated during the combustion reaction flows, the latent-heat heat-exchange portion being arranged in a latent-heat heat-exchange area for receiving latent heat generated during a phase change of the combustion gas and thereby heating the water, the latent-heat heat-exchange portion having a latent-heat heat-exchange pipe for receiving the water and causing same to flow through the interior thereof. The latent-heat heat-exchange pipe comprises multiple latent-heat straight portions extending in a second reference direction perpendicular to the first reference direction, the multiple latent-heat straight portions being arranged to be spaced apart from each other along a third reference direction perpendicular to the first reference direction and to the second reference direction so as to form a latent-heat channel along which the water flows, and which communicates with the sensible-heat channel. The latent-heat straight portions have inner spaces formed in flat shapes such that the width thereof along the third reference direction is smaller than the length thereof along the first reference direction.

JP3797717	END PART DRAWING METHOD OF FLAT PERFORATED PIPE
WO/2005/078372	HEAT EXCHANGER AND METHOD FOR MANUFACTURING THE SAME
WO/2004/025208	HEAT EXCHANGER, METHOD FOR MANUFACTURING HEAT EXCHANGER, TUBE CONNECTING STRUCTURE FOR HEAT EXCHANGER HEADER TANK, GAS COOLER USING SUPERCRITICAL REFRIGERANT, AND REFRIGERANT SYSTEM

PARK JUN KYU (KR)
PARK JUN GIL (KR)

PCT/KR2019/006542

December 12, 2019

May 30, 2019

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KYUNGDONG NAVIEN CO LTD (KR)

F28D1/053; F24H8/00; F24H9/00; F28D21/00; F28F1/02; F28F1/32; F28F13/06

KR20140083626A	2014-07-04
KR20110077308A	2011-07-07
KR100896407B1	2009-05-08
KR20170031338A	2017-03-21
KR20180007933A	2018-01-24

See also references of EP 3816554A4

BAE, KIM & LEE IP GROUP (KR)

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