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Title:
HEAT EXCHANGER
Document Type and Number:
WIPO Patent Application WO/2019/026436
Kind Code:
A1
Abstract:
The purpose is to ensure evaporation capacity by suppressing heat transfer loss when there is deviation in frost formation progressing from a front row and deviation in the distribution of refrigerant from a header to flat tubes. A heat exchanger 1 comprises a plurality of flat tubes 11, fins 12 provided on the flat tubes 11, and a header 13 (or 23) standing in the vertical direction D1 in which the flat tubes 11 are stacked and connected to the flat tubes 11, and the heat exchanger functions as an evaporator that causes heat to be exchanged between air and refrigerant flowing into the flat tubes 11 through the header and causes the refrigerant to evaporate. A front row heat exchanging element 10 comprising flat tubes 11, fins 12, and the header 13, and a rear row heat exchanging element 20 comprising flat tubes 11, fins 12, and the header 23 are arranged. The cross-sectional area of the flow channel of the front row header 13 positioned in the front row F is smaller than the cross-sectional area of the flow channel of the rear row header 23 positioned in the rear row R so that the flow rate of the refrigerant flowing in the front row header 13 is larger than the flow rate of the refrigerant flowing in the rear row header 23.

Inventors:
TATENOI, Hideaki (C/O MITSUBISHI HEAVY INDUSTRIES LTD, 16-5, Konan 2-Chome, Minato-k, Tokyo 15, 〒1088215, JP)
HARA, Yoshihiro (C/O MITSUBISHI HEAVY INDUSTRIES THERMAL SYSTEMS LTD, 16-5, Konan 2-Chome, Minato-k, Tokyo 15, 〒1088215, JP)
AOKI, Yasutaka (C/O MITSUBISHI HEAVY INDUSTRIES LTD, 16-5, Konan 2-Chome, Minato-k, Tokyo 15, 〒1088215, JP)
SAKAI, Masayuki (C/O MITSUBISHI HEAVY INDUSTRIES LTD, 16-5, Konan 2-Chome, Minato-k, Tokyo 15, 〒1088215, JP)
Application Number:
JP2018/022761
Publication Date:
February 07, 2019
Filing Date:
June 14, 2018
Export Citation:
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Assignee:
MITSUBISHI HEAVY INDUSTRIES THERMAL SYSTEMS, LTD. (16-5, Konan 2-Chome Minato-k, Tokyo 15, 〒1088215, JP)
International Classes:
F28F9/02; F25B39/02; F28D1/053
Domestic Patent References:
WO2016121123A12016-08-04
WO2013190830A12013-12-27
Foreign References:
JP2009270781A2009-11-19
JP2017003140A2017-01-05
JP2015055405A2015-03-23
JP2004163036A2004-06-10
Attorney, Agent or Firm:
OBA, Mitsuru et al. (OBA & ASSOCIATES, 8F KM Building, 4-3, Iwamotocho 1-chome, Chiyoda-k, Tokyo 32, 〒1010032, JP)
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