公开(公告)号：US10921034B2

公开(公告)日：2021-02-16

申请号：US16082297

申请日：2016-10-21

Applicant: DENSO CORPORATION

Inventor： Shinya Kasamatsu ,  Satoshi Ito ,  Hideaki Sato ,  Takuya Fuse

IPC: F25B47/02 ,  F28D20/02 ,  F28D20/00 ,  B60H1/00 ,  F28F3/10

Abstract: During a normal operation, a refrigeration cycle device is switched to a refrigerant circuit in which heat contained in a high-pressure refrigerant flowing out of an interior radiator is stored in a heat storage member. When frost is formed on an evaporator, the refrigeration cycle device is switched to another refrigerant circuit in which the exterior heat exchanger is heated and defrosted using heat stored in the heat storage member as a heat source. The heat storage member uses a material formed by adding W (tungsten) as an additive to VO2 (vanadium dioxide) which is a transition metal oxide having a property of a phase transition between a metal and an insulator. The heat storage member effectively stores or dissipates heat depending on a temperature zone of the refrigerant, thereby suppressing an increase in energy consumption of a compressor.

公开(公告)号：US20180093355A1

公开(公告)日：2018-04-05

申请号：US15566402

申请日：2016-04-18

Applicant: DENSO CORPORATION ,  UACJ CORPORATION

Inventor： Hideaki Sato ,  Eizo Takahashi ,  Yasunaga Itoh ,  Yutaka Yanagawa ,  Tomoki Yamayoshi

IPC: B23K35/28 ,  F28F21/08

CPC classification number: B23K35/286 ,  B23K35/22 ,  B23K35/28 ,  B32B15/016 ,  B60H1/00321 ,  C22C21/00 ,  C22C21/08 ,  F28F3/08 ,  F28F21/08 ,  F28F21/084 ,  F28F21/089

Abstract: An aluminum heat exchanger is made by disposing an inner fin in a closed space formed by overlapping edge portions of a formed single tube plate or a plurality of formed tube plates, and brazing a first joint obtained by overlapping the edge portions of the tube plate and a second joint obtained by causing the inner fin to abut against the tube plate, wherein an Al—Si-based brazing filler material is interposed at the first and second joints, and brazing is carried out in an inert gas atmosphere without using flux, wherein the inner fin is constituted of a brazing sheet obtained by cladding a core material of an aluminum alloy, on both surfaces thereof, with the Al—Si-based brazing filler material having a solidus temperature of 570° C. or lower, the solidus temperature being lower than a solidus temperature of the Al—Si-based brazing filler material interposed at the first joint.