INTERNAL HEAT EXCHANGER AND REFRIGERATING CYCLE DEVICE EQUIPPED WITH INTERNAL HEAT EXCHANGER

WIPO Patent Application WO/2020/116271

A1

In the present invention, an internal flow path (18 b) through which a refrigerant flows is formed on the inside of the inner pipe (182) of a double-walled pipe, and an interior/exterior flowpath (18a) through which high-pressure-side refrigerant flows is formed between the outer pipe (181) and the inner pipe (182). An expansion valve-side connector (186) and connector (31) on the opposite side from the expansion valve are provided, interposed between the tip of the outer pipe (181) and the inner pipe (182) and the members to be connected (14, 35, 37). The outer diameter of the outer pipe does not exceed 30 mm. The ratio of the difference between the inner diameter of the outer pipe and the outer diameter of the inner pipe with respect to the inner diameter of the outer pipe does not exceed 25%. Seal members (191 and 192) which prevent the leakage of refrigerant are provided. The plurality of members are mechanically fixed in place.

NAKAMURA FUMIAKI (JP)
MARUYAMA MINORU (JP)
INAZAWA HIDEAKI (JP)
MUTAI MASAO (JP)
SATOU KOUICHI (JP)
HARADA NOBUMICHI (JP)

PCT/JP2019/046331

June 11, 2020

November 27, 2019

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DENSO AIR SYSTEMS CORP (JP)
DENSO CORP (JP)

F25B41/06; F28D7/10; F28F9/00; F28F9/22

JP2007285693A	2007-11-01
JP2007298273A	2007-11-15
JP2003207083A	2003-07-25
JPH0875074A	1996-03-19
JPH06249378A	1994-09-06
JP2004190875A	2004-07-08
JP2019132509A	2019-08-08
JP2010096225A	2010-04-30
JP2006162238A	2006-06-22
JP2006132653A	2006-05-25
JP2006162241A	2006-06-22
JP2007298196A	2007-11-15

JIN Shunji (JP)

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