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1. (WO2018154972) HEAT EXCHANGING UNIT

Pub. No.:    WO/2018/154972    International Application No.:    PCT/JP2017/047238
Publication Date: Fri Aug 31 01:59:59 CEST 2018 International Filing Date: Fri Dec 29 00:59:59 CET 2017
IPC: F28D 1/047
F24F 1/14
F25B 39/00
Applicants: DAIKIN INDUSTRIES, LTD.
ダイキン工業株式会社
Inventors: SATOU, Ken
佐藤 健
JINDOU, Masanori
神藤 正憲
ORITANI, Yoshio
織谷 好男
YAMADA, Kouju
山田 甲樹
INOUE, Satoshi
井上 智嗣
Title: HEAT EXCHANGING UNIT
Abstract:
A plurality of flat tubes (63) constituting a heat exchanger (11) are divided into a plurality of heat exchanging sections (60A – 60K) arranged vertically. Each heat exchanging section (60A – 60K) has a main heat exchanging section (61A – 61K), and a sub heat exchanging section (62A – 62K) that is under the main heat exchanging section and that is connected in series with the main heat exchanging section through a return communication space (92A – 92K) of a header collector pipe (90). Here, in accordance with air speed distribution, the number of flat tubes (63) constituting the heat exchanging sections (60A – 60D) in the upper portion of the heat exchanger (11) is set to be less than the number of flat tubes (63) constituting the heat exchanging sections (60I – 60K) in the lower portion.