HEAT EXCHANGER, METHOD OF PRODUCING SAME, AND AIR CONDITIONING DEVICE

WIPO Patent Application WO/2021/014522

A1

This heat exchanger is provided with: a first column and second column of a plurality of flat tubes that are arranged spaced apart from one another; a first header creating communication between first-direction ends of each of the flat tubes of the first column; a second header likewise creating communication between ends of the second column; and a third header that is arranged straddling across the first column and the second column at the other first-direction end side of each of the flat tubes, creates communication between the other ends, and creates communication of flow of a refrigerant across the columns in the first header and the second header. The flat tubes are provided, except in a space between the divided third header, and the first header and the second header are bent-molded. A stress-absorbing structure for absorbing stress is provided to a bent-molded site where, of the first header or the second header, there is greater stress caused at least by the bent molding. This configuration makes it possible to prevent damage to the headers and corrugated fins from the bent molding and possible to avoid a decrease in heat exchange efficiency, without leading to more complex work or an increase in the number of production steps.

NAKAMURA MASASHI (JP)
OKADA MASAKI (JP)
KAWABATA RYOHEI (JP)

PCT/JP2019/028600

January 28, 2021

July 22, 2019

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MITSUBISHI ELECTRIC CORP (JP)

F28F9/02; F24F1/18; F25B39/00; F28D1/053

WO2018185824A1

2018-10-11

US20190011192A1	2019-01-10
JP2018194294A	2018-12-06
JPH10160382A	1998-06-19
JP2006322634A	2006-11-30

KISA PATENT & TRADEMARK FIRM (JP)

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