US 12,298,086 B2
Heat exchanger and air conditioning unit with multiple refrigeration systems
Xiaoming Zhong, Zhejiang (CN); Jianlong Jiang, Zhejiang (CN); and Qiang Gao, Zhejiang (CN)
Assigned to SANHUA (HANGZHOU) MICRO CHANNEL HEAT EXCHANGER CO., LTD., Zhejiang (CN)
Appl. No. 17/622,961
Filed by SANHUA (HANGZHOU) MICRO CHANNEL HEAT EXCHANGER CO., LTD., Zhejiang (CN)
PCT Filed Jun. 28, 2020, PCT No. PCT/CN2020/098418
§ 371(c)(1), (2) Date Dec. 27, 2021,
PCT Pub. No. WO2020/259671, PCT Pub. Date Dec. 30, 2020.
Claims priority of application No. 201910577276.9 (CN), filed on Jun. 28, 2019; and application No. 201921002572.8 (CN), filed on Jun. 28, 2019.
Prior Publication US 2022/0243989 A1, Aug. 4, 2022
Int. Cl. F28D 1/047 (2006.01); F28D 7/16 (2006.01); F28F 1/12 (2006.01); F28F 9/02 (2006.01)
CPC F28D 7/1684 (2013.01) [F28F 1/126 (2013.01); F28F 9/02 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A heat exchanger, comprising:
a first header and a second header, wherein the first header and the second header are arranged in parallel;
a third header and a fourth header, wherein the third header and the fourth header are arranged in parallel, the third header and the first header are arranged in parallel, and the fourth header and the second header are arranged in parallel;
a heat exchange tube, wherein the heat exchange tube comprises a plurality of first heat exchange tubes arranged in parallel and a plurality of second heat exchange tubes arranged in parallel, the first heat exchange tube and the second heat exchange tube are arranged in parallel, the first heat exchange tubes and the second heat exchange tubes are alternately arranged in a length direction of the first header, one end of the first heat exchange tube is connected to the first header, the other end of the first heat exchange tube is connected to the second header to connect the first header and the second header, one end of the second heat exchange tube is connected to the third header, and the other end of the second heat exchange tube is connected to the fourth header to connect the third header and the fourth header; and
fins, wherein the fins are arranged between adjacent heat exchange tubes, and at least two of the fins are arranged between the first heat exchange tube and the second heat exchange tube that are adjacent in the length direction of the first header, wherein
at least one of the first heat exchange tube and the second heat exchange tube has a bent section and comprises a first section, a middle section, and a second section, the bent section comprises a first bent section and a second bent section, the first section and the middle section are connected through the first bent section, and the second section and the middle section are connected through the second bent section;
the first section comprises a first longitudinal side face and a second longitudinal side face which are arranged opposite to each other in a thickness direction of the first section, the middle section comprises a first longitudinal side face and a second longitudinal side face which are arranged opposite to each other in a thickness direction of the middle section, the first longitudinal side face of the first section and the first longitudinal side face of the middle section are arranged in parallel, the second longitudinal side face of the first section in a thickness direction of the middle section is between the first longitudinal side face of the first section and the first longitudinal side face of the middle section; and
the heat exchanger comprises a first part, a middle part, and a second part, the middle part of the heat exchanger comprises the middle section and the fins, the first part of the heat exchanger comprises the first section, between the middle section and at least a part of the first section form an acute angle, and air flowing through the heat exchanger passes through the middle part of the heat exchanger and then the first part of the heat exchanger, or passes through the first part of the heat exchanger and then the middle part of the heat exchanger.