US 12,011,972 B2
Flat-tube intermediate heat exchanger and thermal management system
Yongxiang Tan, Zhejiang (CN); Yunpeng Wang, Zhejiang (CN); and Fengyan Xu, Zhejiang (CN)
Assigned to Sanhua Holding Group, Co., Ltd., Hangzhou (CN)
Filed by Sanhua Holding Group, Co., Ltd., Hangzhou (CN)
Filed on Nov. 20, 2020, as Appl. No. 17/100,703.
Application 17/100,703 is a continuation of application No. PCT/CN2019/087370, filed on May 17, 2019.
Claims priority of application No. 201810498122.6 (CN), filed on May 23, 2018; application No. 201810498123.0 (CN), filed on May 23, 2018; and application No. 201810520391.8 (CN), filed on May 28, 2018.
Prior Publication US 2021/0078383 A1, Mar. 18, 2021
Int. Cl. B60H 1/00 (2006.01); B60H 1/32 (2006.01); F25B 13/00 (2006.01)
CPC B60H 1/00814 (2013.01) [B60H 1/32 (2013.01); F25B 13/00 (2013.01)] 20 Claims
OG exemplary drawing
 
1. An intermediate heat exchanger comprising:
a second heat exchange portion comprising a plurality of first flat tubes, a first collecting pipe and a second collecting pipe, the second collecting pipe defining a chamber with a first sub-chamber and a second sub-chamber, the first sub-chamber being not in communication with the second sub-chamber, the first flat tubes comprising a first sub-portion formed by a part thereof and a second sub-portion formed by the other part thereof, the first sub-chamber communicating with a chamber of the first collecting pipe through passageways of the first sub-portion, and the second sub-chamber communicating with the chambers of the first collecting pipe through passageways of the second sub-portion; and
a first heat exchange portion comprising a plurality of second flat tubes, a third collecting pipe and a fourth collecting pipe, each of the second flat tubes defining a passageway communicating a chamber of the third collecting pipe to a chamber of the fourth collecting pipe;
wherein a first end port of the second heat exchange portion is in communication with the first sub-chamber, a second end port of the second heat exchange portion is in communication with the chamber of the first collecting pipe, a third end port of the second heat exchange portion is in communication with the second sub-chamber, a first end port of the first heat exchange portion is in communication with the chamber of the third collecting pipe, and a second end port of the first heat exchange portion is in communication with the chamber of the fourth collecting pipe; and
the first flat tube comprises a first bonding portion, and the second flat tube comprises a second bonding portion connecting to the first bonding portion.