HEAT EXCHANGER - DAIKIN IND LTD

Title:

HEAT EXCHANGER

Document Type and Number:

WIPO Patent Application WO/2013/161311

Kind Code:

A1

Abstract:

In a heat exchanger (23), a plurality of main heat exchange parts (51a-51c) and a plurality of auxiliary heat exchange parts (52a-52c) are formed. In a first header collecting tube (60), an upper space (61) that communicates with flat tubes (33) of all of the main heat exchange parts (51a-51c) is formed. The respective auxiliary heat exchange parts (52a-52c) are connected in series with the main heat exchange parts (51a-51c) corresponding thereto. Among the number ratios between the flat tubes (33) of the main heat exchange parts (51a-51c) and the auxiliary heat exchange parts (52a-52c) which correspond to each other, the number ratio regarding the first main heat exchange part (51a) located undermost is minimum. Therefore, the discharge of a liquid refrigerant from the bottom of the first main heat exchange part (51a) is accelerated during a defrosting operation, and the time required for defrosting is shortened.

Inventors:

JINDOU MASANORI
ORITANI YOSHIO
KAZUSA TAKUYA
KIKUCHI YOSHIMASA
YOSHIOKA SHUN

Application Number:

PCT/JP2013/002819

Publication Date:

October 31, 2013

Filing Date:

April 25, 2013

Export Citation:

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Assignee:

DAIKIN IND LTD (JP)

International Classes:

F28F9/02; F25B39/02; F28D1/053; F28F9/22

Foreign References:

JPH05312492A	1993-11-22
JPH02225999A	1990-09-07
JPH08193771A	1996-07-30
JP2011145029A	2011-07-28
JPH04174297A	1992-06-22
JP2001050683A	2001-02-23
US4121656A	1978-10-24
JP2005003223A	2005-01-06
JP2006105545A	2006-04-20

Other References: