Heat exchanger

Patent metadata

Field	Value
Publication number	US-12540776-B2
Application number	US-202118256511-A
Country	US
Kind code	B2
Filing date	Dec 6, 2021
Priority date	Dec 8, 2020
Publication date	Feb 3, 2026
Grant date	Feb 3, 2026

Abstract

A heat exchanger includes first to fourth tubes, and first and second heat exchange tubes. The second heat exchange tube includes a first bent section and a first straight section. The first bent section has a first end connected with the second tube and a second end connected with the first straight section. In the width direction, the projection of the second channel of the first heat exchange tube is located between the first channel of the first heat exchange tube and the first channel of the first bent section, and the first channel of the first bent section is located between the second channel of the first heat exchange tube and the second channel of the first bent section.

First claim

What is claimed is:

1 . A heat exchanger, comprising:
a first assembly comprising a first tube and a second tube; a second assembly comprising a third tube and a fourth tube; a plurality of heat exchange tubes, a peripheral contour of a cross section of the heat exchange tube being generally flat, the heat exchange tube comprising a plurality of channels extending along a length direction of the heat exchange tube, the plurality of channels being arranged at intervals in a width direction of the heat exchange tube, the plurality of channels comprising a first channel and a second channel, a flow sectional area of the first channel on the cross section of the heat exchange tube being larger than flow sectional areas of other channels on the cross section of the heat exchange tube, and a flow sectional area of the second channel on the cross section of the heat exchange tube being smaller than flow sectional areas of other channels on the cross section of the heat exchange tube; the plurality of heat exchange tubes comprising a first heat exchange tube and a second heat exchange tube, a first end of the first heat exchange tube in the length direction being communicated with the first tube, and a second end of the first heat exchange tube in the length direction being communicated with the third tube, to communicate the first tube and the third tube; the second heat exchange tube being communicated with the second tube and the fourth tube, the second heat exchange tube comprising a first bent section and a first straight section, a first end of the first bent section being communicated with the second tube, and a second end of the first bent section being communicated with a first end of the first straight section, and the first heat exchange tube and the second heat exchange tube are arranged at intervals in a length direction of the first tube; and a fin comprising a first fin, at least part of the first fin being connected with the first heat exchange tube and at least part of the first fin being connected with the second heat exchange tube in the length direction of the first tube, and the first heat exchange tube, the first fin and the second heat exchange tube being sequentially arranged in the length direction of the first tube, and two or more first fins are provided; wherein a plane perpendicular to the length direction of the first tube and parallel to the width direction and the length direction of the first heat exchange tube is defined as a first plane, in the first plane, a length direction of a projection of a partial tube section of the first bent section of the second heat exchange tube is at an angle with a length direction of a projection of the first straight section of the second heat exchange tube, and in the width direction of the first heat exchange tube, a projection of the second channel of the first heat exchange tube is located between a projection of the first channel of the first heat exchange tube and a projection of the first channel of a part of the first bent section, and a projection of the first channel of the first bent section is located between the projection of the second channel of the first heat exchange tube and a projection of the second channel of the part of the first bent section, wherein the second tube is internally provided with a first plate, the first plate divides a flow channel of the second tube into a first flow channel and a second flow channel, the partial tube section of the first bent section is located in the first flow channel and communicated with the first flow channel, and the first plate comprises a partial inclined face, and the inclined face guides more refrigerant to flow to the first channel of the first bent section when the heat exchanger is in operation.

2 . The heat exchanger according to claim 1 , wherein the first bent section of the second heat exchange tube is at least partially arranged in the second tube, a maximum length of the partial tube section of the first bent section arranged in the second tube is H, an equivalent diameter of the second tube is D, and a ratio of the maximum length H to the equivalent diameter D is greater than or equal to ⅓ and less than or equal to ⅔.

3 . The heat exchanger according to claim 1 , wherein a plurality of first channels are provided, and the plurality of first channels are arranged at intervals along the width direction of the heat exchange tube, and/or, a plurality of second channels are provided, and the plurality of second channels are arranged at intervals along the width direction of the heat exchange tube.

4 . The heat exchanger according to claim 1 , wherein a projection of the second channel of at least one first heat exchange tube on the first plane partially intersects with a projection of the first channel of at least one first bent section on the first plane, and an included angle b of an intersecting part is greater than 20 degrees and less than 65 degrees.

5 . The heat exchanger according to claim 1 , wherein,
the first tube is internally provided with a first sub-tube, the first sub-tube comprises a flow channel and a tube wall surrounding the flow channel, a length direction of the flow channel is parallel to the length direction of the first tube, and the tube wall is provided with a first through hole penetrating through the tube wall along a thickness direction of the tube wall, and the first through hole is communicated with the first tube and the first sub-tube; the second tube is internally provided with a second sub-tube, the second sub-tube comprises a flow channel and a tube wall surrounding the flow channel, a length direction of the flow channel is parallel to the length direction of the second tube, and the tube wall is provided with a second through hole penetrating through the tube wall along a thickness direction of the tube wall, and the second through hole is communicated with the second tube and the flow channel of the second sub-tube; a plurality of first through holes and a plurality of second through holes are provided, the plurality of first through holes are arranged at intervals along the length direction of the first tube, and the plurality of second through holes are arranged at intervals along the length direction of the second tube, on the first plane, a number of projections of the first through holes towards the first channel of the first heat exchange tube is more than a number of projections of the first through holes towards the second channel of the first heat exchange tube, and/or, a number of projections of the second through holes towards the first channel of the first bent section is more than a number of projections of the second through holes towards the second channel of the first bent section.

6 . The heat exchanger according to claim 1 , wherein the first plate comprises a first face facing the first bent section and a second face facing away from the first bent section, at least part of the first face is the inclined face, and a projection line of the first plate is inclined relative to the width direction of the first heat exchange tube on the first plane, and a minimum distance from a projection of an end face of the first channel of the first bent section located in the second tube to the first face is L 1 and a minimum distance from a projection of an end face of the second channel of the first bent section located in the second tube to the first face is L 2 , and the distance L 1 is smaller than the distance L 2 .

7 . The heat exchanger according to claim 1 , wherein the first plate comprises a first face facing the first bent section and a second face facing away from the first bent section, the first face comprises two intersecting inclined faces, and in the first plane, projection lines of

Assignees

• Sanhua Hangzhou Micro Channel Heat Exchanger Co Ltd

Inventors

• Jiang Jianlong
• Xiao Ruixue
• Zhong Xiaoming
• Wei Zheng

Classifications

• F28D2021/0068

  for refrigerant cycles · CPC title

• F28F1/22

  the means having portions engaging further tubular elements · CPC title

• F28D1/047

  the conduits being bent, e.g. in a serpentine or zig-zag · CPC title

• F28D1/0426 Primary

  with units having particular arrangement relative to the large body of fluid, e.g. with interleaved units or with adjacent heat exchange units in common air flow or with units extending at an angle to each other or with units arranged around a central element · CPC title

• F28D1/05366 Primary

  Assemblies of conduits connected to common headers, e.g. core type radiators · CPC title