HEAT EXCHANGER, AIR CONDITIONER OUTDOOR UNIT EQUIPPED WITH HEAT EXCHANGER, AND AIR CONDITIONER EQUIPPED WITH AIR CONDITIONER OUTDOOR UNIT

WIPO Patent Application WO/2022/249425

A1

This heat exchanger installed in an air conditioner outdoor unit is equipped with one heat exchanger core with a plurality of flattened tubes extending in the vertical direction, or two or more such heat exchanger cores along the air flow direction, and has a bottom portion wherein a hot gas refrigerant inlet for a refrigerant to flow in when the heat exchanger functions as a condenser is formed. This heat exchanger satisfies ΔPHEX/ΔPHEAD = (5.94635×10−4×A−1.75030)/(8.4303H+0.8779)>1, where a[m2] is defined as the flow path cross-sectional area per flattened tube, A[m2] = a×N[m2] is defined as the total flow path cross-sectional area of the heat exchanger core when the number of flattened tubes is N, H[m] is defined as the height of the heat exchanger core, ΔPHEX is defined as the differential pressure in the refrigerant flow path, and ΔPHEAD is defined as the liquid head.

ONAKA YOJI (JP)
SAIKUSA TETSUJI (JP)
ADACHI RIHITO (JP)
KISHIDA NANAMI (JP)
GOMYO TAISAKU (JP)
NAKAO YUKI (JP)
KASAKI SHINGO (JP)
KIBE ATSUSHI (JP)
MORIMOTO HIROYUKI (JP)

PCT/JP2021/020313

December 01, 2022

May 28, 2021

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MITSUBISHI ELECTRIC CORP (JP)

F25B39/00; F25B39/04; F25B47/02; F28D1/053; F28F1/02; F28F17/00

WO2016092943A1	2016-06-16
WO2021079422A1	2021-04-29

JP2013174398A	2013-09-05
JPH10220919A	1998-08-21
JP2006183962A	2006-07-13
JPS5837465A	1983-03-04
JP2008267686A	2008-11-06
JP2018096638A	2018-06-21

KISA PATENT & TRADEMARK FIRM (JP)

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