Heat exchanger

Abstract

A heat exchanger, comprising a plurality of heat exchange plates which are stacked and fins located between adjacent heat exchange plates. Each fin comprises a connecting portion and a heat transfer portion; the connecting portion extends in the length direction of the fin; the heat transfer portion comprises a first heat transfer portion; the first heat transfer portion comprises a first offset portion and a second offset portion; the connecting portion comprises a first edge portion; in the height direction of the fin, the first offset portion comprises a first end portion, and the second offset portion comprises a second end portion; the first edge portion is fixedly connected to the first end portion, and is fixedly connected to the second end portion; in the width direction of the fin, the first offset portion and the second offset portion are offset in opposite directions relative to the first edge portion; in the length direction of fins, at least some of the first offset portions and the second offset portions are alternately arranged; and for the first offset portions and the second offset portions which are alternately arranged, a first opening facing the length direction of the fins is formed between each first offset portion and the corresponding second offset portion. The cross-sectional flow area of a medium is increased, and the heat exchange efficiency is improved.

Description

A heat exchanger

[0001] This application claims priority to the Chinese patent application with application number 202410219095.X filed with the Patent Office of China on February 27, 2024, and with the invention name “A Heat Exchanger”, the entire contents of which are incorporated by reference into this application. Technical Field

[0002] The present application relates to the field of thermal management technology, and in particular to a heat exchanger. Background Art

[0003] Fins increase the turbulence effect on the medium by opening windows on the side walls, thereby enhancing the heat exchange effect. However, due to the thickness limitation of the fin material, the size of the window is also limited. Therefore, the channel flow cross-sectional area formed by the window is small and the flow resistance to the medium is large, which is not conducive to the heat exchange of the medium. Summary of the Invention

[0004] The purpose of this application is to provide a heat exchanger with enhanced heat exchange performance.

[0005] An embodiment of the present application provides a heat exchanger, comprising a plurality of stacked heat exchange plates and fins located between adjacent heat exchange plates, the fins comprising a connecting portion and a heat transfer portion, the connecting portion extending in the length direction of the fin, the heat transfer portion comprising a first heat transfer portion, the first heat transfer portion comprising a first offset portion and a second offset portion, the connecting portion comprising a first edge portion, along the height direction of the fin, the first offset portion comprising a first end portion, the second offset portion comprising a second end portion, the first edge portion being fixedly connected to the first end portion, and the first edge portion being fixedly connected to the second end portion, along the width direction of the fin, the first offset portion and the second offset portion are offset in opposite directions relative to the first edge portion, along the length direction of the fin, at least some of the first offset portion and the second offset portion are alternately arranged, and for the alternating first offset portion and the second offset portion, a first opening is provided between the first offset portion and the second offset portion, and the first opening faces the length direction of the fin.

[0006] In the above technical solution, the fin includes a heat transfer portion, the heat transfer portion includes a first heat transfer portion, the first heat transfer portion includes a first bias portion and a second bias portion, and the bias directions of the first bias portion and the second bias portion are opposite. Compared with the setting of biasing in the same direction, when the thickness of the fin does not increase, the first bias portion and the second bias portion with opposite bias directions increase the flow cross-sectional area extending along the length direction of the fin between the first bias portion and the second bias portion, thereby facilitating the flow of the medium between the first bias portion and the second bias portion, thereby increasing the heat exchange efficiency between the medium and the fin. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] FIG1 is a schematic cross-sectional view of a first embodiment of a heat exchanger of the present application;

[0008] FIG2 is a schematic diagram of the cross-sectional structure along the AA direction in FIG1 ;

[0009] FIG3 is a schematic cross-sectional view of a second embodiment of the heat exchanger of the present application;

[0010] FIG4 is a schematic structural diagram of a first embodiment of the fin of the present application;

[0011] FIG5 is an enlarged schematic diagram of the structure of the first biasing portion and the third biasing portion in FIG4 ;

[0012] FIG6 is a schematic diagram of the top view of the fin in FIG4 ;

[0013] FIG7 is a schematic structural diagram of a first embodiment of the connecting portion in FIG6 ;

[0014] FIG8 is a schematic structural diagram of a second embodiment of the connecting portion in FIG6 ;

[0015] FIG9 is a schematic diagram of the three-dimensional structure of the fin in FIG4 in one direction;

[0016] FIG10 is a schematic diagram of the three-dimensional structure of the fin in FIG4 in another direction;

[0017] FIG11 is a schematic cross-sectional view of the structure along the BB direction in FIG4 ;

[0018] FIG12 is a schematic structural diagram of a third embodiment of the connecting portion in FIG6 ;

[0019] FIG13 is an enlarged schematic diagram of the structure at point C in FIG11;

[0020] FIG14 is an enlarged schematic diagram of the structure of the second biasing portion and the fourth biasing portion in FIG4 ;

[0021] FIG15 is a schematic structural diagram of the first base in this application;

[0022] FIG16 is a schematic structural diagram of the second base in this application;

[0023] FIG17 is a schematic structural diagram of a first embodiment of the fin of the present application;

[0024] FIG18 is a schematic diagram of the three-dimensional structure of the fin in FIG17 in one direction;

[0025] FIG19 is a schematic diagram of the three-dimensional structure of the fin in FIG17 in another direction;

[0026] FIG20 is a schematic structural diagram of a first embodiment of the heat transfer portion in FIG17 ;

[0027] FIG21 is a schematic diagram of the three-dimensional structure of the fin in FIG20 in one direction;

[0028] FIG22 is a schematic diagram of the three-dimensional structure of the fin in FIG20 in another direction;

[0029] FIG23 is a schematic structural diagram of a second embodiment of the heat transfer portion in FIG17 ;

[0030] FIG24 is a schematic structural diagram of a third embodiment of the heat transfer portion in FIG17 .

[0031] Description of reference numerals: 11, heat exchanger; 12, heat exchange plate; 121, first plate; 122, second plate; 13, Fluid channel; 131, first heat exchange channel; 132, second heat exchange channel; 14, fin; 15, connecting portion; 151, gap section; 152, plane portion; 153, curved portion; 154, first side portion; 155, second side portion; 16, heat transfer portion; 161, first heat transfer portion; 1611, first offset portion; 16111, first end portion; 16112, fifth end portion; 16113, first convex portion; 16114, first face portion; 16115, third sub-convex portion; 16116, fourth sub-convex portion; 1612, second offset portion; 16121, second end portion; 16122, seventh end portion; 16123, second convex portion; 16124, second face portion; 16125, first sub-convex portion; 16126, second sub-convex portion; 1 613. First opening; 1614. First base; 162. Second heat transfer portion; 1621. Third offset portion; 16211. Third end portion; 16212. Eighth end portion; 16213. Third protrusion; 16214. Third face portion; 16215. Fifth sub-protrusion; 16216. Sixth sub-protrusion; 1622. Fourth offset portion; 16221. Fourth end portion; 16222. Sixth end portion; 16223. Fourth protrusion; 16224. Fourth face portion; 16225. Seventh sub-protrusion; 16226. Eighth sub-protrusion; 1623. Second opening; 1624. Second base; 17. First channel; 171. First flow channel; 172. Second flow channel; 18. Side wall portion; 181. First section portion; 182. Second section portion. DETAILED DESCRIPTION

[0032] Specific embodiments will now be described in detail with reference to the accompanying drawings. In order to fully understand the present invention, numerous specific details are mentioned in the following detailed description, but those skilled in the art should understand that the specific components, devices and features illustrated in the drawings and described herein are only exemplary and should not be considered as limiting.

[0033] As shown in Figures 1 to 24, an embodiment of the present application provides a heat exchanger 11, which includes a plurality of stacked heat exchange plates 12, and a fluid channel 13 is provided between adjacent heat exchange plates 12. The heat exchange plate 12 includes a first plate 121 and a second plate 122. In this embodiment, the first plate 121 and the second plate 122 are alternately arranged, and a first heat exchange channel 131 is provided between the first plate 121 and the second plate 122 adjacent on one side, and a second heat exchange channel 132 is provided between the first plate 121 and the second plate 122 adjacent on the other side. The first heat exchange channel 131 and the second heat exchange channel 132 are alternately arranged, and the first heat exchange channel 131 is not connected to the second channel. Different media flow in the first heat exchange channel 131 and the second heat exchange channel 132, and different media exchange heat through the heat exchange plate 12. In other embodiments, two first heat exchange channels 131 can be arranged continuously and then the second heat exchange channel 132 is arranged.

[0034] As shown in FIG2 , in order to enhance the heat exchange effect of the heat exchanger 11 , fins 14 are provided between adjacent heat exchange plates 12 . The fins 14 contact the medium to increase the contact area between the medium and the heat exchanger 11 , thereby increasing the heat exchange effect. The fins 14 can be provided in each fluid channel 13 , as shown in FIG3 , or can be provided at intervals. As shown in FIG5 , the fins 14 include a connecting portion 15 and a heat transfer portion 16 . Along the width direction of the fin 14 , one side of the connecting portion 15 is fixedly connected to one heat transfer portion 16 , and the other side of the connecting portion 15 is fixedly connected to another heat transfer portion 16 . The connecting portion 15 includes a flat portion 152 , which facilitates contact with the heat exchange plate 12 , thereby improving the sealing between the connecting portion 15 and the heat exchange plate 12 and helping to improve the welding effect. In other embodiments, as shown in FIG12 , the connecting portion 15 may also include a bent portion 153 .

[0035] The embodiment of the present application focuses on improving the structure of the fins 14 of the heat exchanger 11, which will be described in detail below with reference to the accompanying drawings.

[0036] As shown in Figures 4 to 24, the fin 14 includes a connecting portion 15 and a heat transfer portion 16. The connecting portion 15 is fixedly connected to the heat transfer portion 16. The connecting portion 15 extends in the length direction of the fin 14, wherein the connecting portion 15 is used to fixedly connect adjacent heat transfer portions 16. In this embodiment, after the connecting portion 15 is fixedly connected to the adjacent heat transfer portion 16, the fin 14 is wavy, and at least part of the connecting portion 15 is fixedly connected to the heat exchange plate 12. The heat transfer portion 16 is at a certain angle to the heat exchange plate 12. The heat transfer portion 16 has a turbulent effect on the medium and is used to increase the contact area with the medium and thereby increase the heat exchange efficiency. It should be noted that, as shown in Figures 4 to 6, the connecting portion 15 extends in the length direction of the fin 14, which refers to the connecting portion. The direction from one side of the connecting portion 15 to the other side is parallel to the length direction of the fin 14. At the same time, for any part of the connecting portion 15, the direction from one end of any part of the connecting portion 15 to the other end is also parallel to the length direction of the fin 14, that is, the connecting portion 15 has two boundaries in the width direction of the fin 14, and both boundaries are straight lines extending along the length direction of the fin 14, wherein the two boundaries can be a continuous section or a discontinuous multiple sections. The heat transfer portion 16 includes a first heat transfer portion 161, and the first heat transfer portion 161 includes a first offset portion 1611 and a second offset portion 1612. The connecting portion 15 includes a first side portion 154. Along the height direction of the fin 14, the first offset portion 1611 includes a first end portion 16 111, the second biasing portion 1612 includes a second end portion 16121, the first side portion 154 is fixedly connected to the first end portion 16111, the first side portion 154 is fixedly connected to the second end portion 16121, along the width direction of the fin 14, the first biasing portion 1611 and the second biasing portion 1612 are offset in opposite directions relative to the first side portion 154, the first biasing portion 1611 and the second biasing portion 1612 are offset to cut the boundary layer of the flow of the medium, thereby enhancing the disturbance effect on the medium, thereby further enhancing the heat exchange effect, along the length direction of the fin 14, at least part of the first biasing portion 1611 and the second biasing portion 1612 are alternately arranged, for the alternating first biasing portion 1611 and the second biasing portion The first biasing portion 1611 and the second biasing portion 1612 have a first opening 1613 between them. The first opening 1613 faces the length direction of the fin 14. The medium flows along the length direction of the fin 14 through the first opening 1613. The first biasing portion 1611 is biased to one side relative to the first side 154 to form a part of the first opening 1613. The second biasing portion 1612 is biased to the other side opposite to the first side 154 to form another part of the first opening 1613. That is, the first biasing portion 1611 and the second biasing portion 1612 are biased in opposite directions relative to the first side 154. Compared with the setting of biasing in the same direction, the thickness of the fin 14 does not increase.The first offset portion 1611 and the second offset portion 1612, which are offset in opposite directions, increase the flow cross-sectional area of ​​the first opening 1613 located between the first offset portion 1611 and the second offset portion 1612. This reduces the resistance to the flow of the medium through the first opening 1613, facilitates the passage of the medium through the first opening 1613, and thereby improves the heat exchange performance between the medium and the fin 14. In this embodiment, the connecting portion 15 is continuous along the length of the fin 14, as shown in Figure 8. In other embodiments, the connecting portion 15 may also have a gap section 151.

[0037] As shown in Figures 4 to 24, in this embodiment, along the length direction of the fin 14, the first bias portion 1611 and the second bias portion 1612 are alternately arranged. Since the first bias portion 1611 and the second bias portion 1612 are alternately arranged, a first opening 1613 is formed between the first bias portion 1611 and the second bias portion 1612. When the medium flows along the length direction of the fin 14, it is disturbed by the first bias portion 1611 and the second bias portion 1612. The medium is disturbed by the first bias portion 1611, and part of the medium is located on one side of the first bias portion 1611 and continues to flow along the length direction of the fin 14, and part of the medium is located on the other side of the first bias portion 1611 and flows along the length direction of the fin 14. The medium contacts both sides of the first bias portion 1611 for heat exchange, and the medium is disturbed by the second bias portion 1612, and part of the medium is located on one side of the second bias portion 1612 and continues to flow along the length direction of the fin 14. The first biasing portion 1611 and the second biasing portion 1612 are provided with a first opening 1613 facing the length direction of the fin 14, and the medium flows from the first biasing portion 1611 to the second biasing portion 1612 through the first opening 1613, or flows from the second biasing portion 1612 to the first biasing portion 1611 through the first opening 1613. Therefore, the first biasing portion 1611 and the second biasing portion 1612 separate the medium into multiple streams, and the multiple streams of medium flow along the length direction of the fin 14, thereby enhancing the disturbance effect on the medium and the turbulence degree of the medium, thereby increasing the heat exchange performance of the heat exchanger 11. In other embodiments, part of the first biasing portion 1611 and the second biasing portion 1612 may be alternately arranged.

[0038] As shown in Figures 4 to 24, the heat transfer portion 16 includes a second heat transfer portion 162, the second heat transfer portion 162 includes a third biasing portion 1621 and a fourth biasing portion 1622, the connecting portion 15 includes a second side portion 155, along the height direction of the fin 14, the third biasing portion 1621 includes a third end portion 16211, the fourth biasing portion 1622 includes a fourth end portion 16221, the second side portion 155 is fixedly connected to the third end portion 16211, the second side portion 155 is fixedly connected to the fourth end portion 16221, along the height direction of the fin 14. 4, the third bias portion 1621 and the fourth bias portion 1622 are offset in opposite directions relative to the second side portion 155. The third bias portion 1621 and the fourth bias portion 1622 are offset to cut the boundary layer of the medium flow, enhance the disturbance effect on the medium, and further enhance the heat exchange effect. Along the length direction of the fin 14, at least part of the third bias portion 1621 and the fourth bias portion 1622 are alternately arranged. For the alternately arranged third bias portion 1621 and the fourth bias portion 1622, the third bias portion 1621 and the fourth bias portion 1622 are alternately arranged. A second opening 1623 is provided between the third biasing portion 1621 and the fourth biasing portion 1622. The second opening 1623 faces the length direction of the fin 14. The medium flows along the length direction of the fin 14 through the second opening 1623. Since the third biasing portion 1621 is biased to one side relative to the second side 155 to form a part of the second opening 1623, the fourth biasing portion 1622 is biased to the other side relative to the second side 155 to form another part of the second opening 1623, i.e., the third biasing portion 1621 is biased to the other side relative to the second side 155 to form the other part of the second opening 1623. The third and fourth offset portions 1621 and 1622 are offset in opposite directions relative to the second side portion 155. Compared with a configuration in which the offset is in the same direction, without increasing the thickness, the third and fourth offset portions 1621 and 1622, which are offset in opposite directions, increase the flow cross-sectional area of ​​the second opening 1623 located between the third and fourth offset portions 1621 and 1622. This reduces the resistance to the flow of the medium through the second opening 1623, facilitates the passage of the medium through the second opening 1623, and thereby improves the heat exchange performance between the medium and the fin 14.

[0039] As shown in Figures 6 to 24, in this embodiment, along the length direction of the fin 14, the third biasing portion 1621 and the fourth biasing portion 1622 are alternately arranged. Since the third biasing portion 1621 and the fourth biasing portion 1622 are alternately arranged, a second opening 1623 is formed between the third biasing portion 1621 and the fourth biasing portion 1622. When the medium flows along the length direction of the fin 14, it is disturbed by the third biasing portion 1621 and the fourth biasing portion 1622. The medium is disturbed by the third biasing portion 1621, and part of the medium is located on one side of the third biasing portion 1621 and continues to flow along the length direction of the fin 14, and part of the medium is located on the other side of the fourth biasing portion 1622 and flows along the length direction of the fin 14. The medium contacts both sides of the third biasing portion 1621 for heat exchange, and the medium is disturbed by the fourth biasing portion 1622, and part of the medium is located on one side of the fourth biasing portion 1622 and continues to flow along the length direction of the fin 14. The medium flows in the direction of the degree, and part of the medium is located on the other side of the fourth offset portion 1622 and flows along the length direction of the fin 14. The medium contacts both sides of the fourth offset portion 1622 for heat exchange, and a second opening 1623 facing the length direction of the fin 14 is provided between the third offset portion 1621 and the fourth offset portion 1622. The medium flows from the third offset portion to the fourth offset portion 1622 through the second opening 1623, or flows from the fourth offset portion 1622 to the third offset portion 1621 through the second opening 1623. Therefore, the third offset portion 1621 and the fourth offset portion 1622 separate the medium into multiple streams, and the multiple streams of medium flow along the length direction of the fin 14, thereby enhancing the disturbance effect on the medium and the turbulence degree of the medium, thereby enhancing the heat exchange performance of the heat exchanger 11. In other embodiments, part of the third offset portion 1621 and the fourth offset portion 1622 may be alternately arranged.

[0040] As shown in Figures 4 to 24, along the width direction of the fin 14, the first heat transfer portion 161 and the second heat transfer portion 162 are alternately arranged, defining a first surface perpendicular to the width direction of the fin 14, the orthographic projection of the first bias portion 1611 on the first surface coincides with the orthographic projection of the third bias portion 1621 on the first surface, and the medium flows in the area between the first bias portion 1611 and the third bias portion 1621, the orthographic projection of the second bias portion 1612 on the first surface coincides with the orthographic projection of the fourth bias portion 1622 on the first surface, and the medium flows in the area between the second bias portion 1612 and the fourth bias portion 1622. Along the width direction of the fin 14, the first bias portion 1611 and the third bias portion 1621 coincide with each other. The bias direction of the first bias portion 1611 relative to the first side portion 154 is the same as the bias direction of the third bias portion 1621 relative to the second side portion 155. When the medium flows in the area between the first bias portion 1611 and the third bias portion 1621, since the bias directions of the first bias portion 1611 and the third bias portion 1621 are the same, the flow cross-sectional area of ​​the flow area between the first bias portion 1611 and the third bias portion 1621 will not be too small. The bias direction of the second bias portion 1612 relative to the first side portion 154 is the same as the bias direction of the fourth bias portion 1622 relative to the second side portion 155. The medium flows in the area between the second bias portion 1611 and the third bias portion 1621. When the medium flows in the area between the second biasing portion 1612 and the fourth biasing portion 1622, since the biasing directions of the second biasing portion 1612 and the fourth biasing portion 1622 are the same, the flow cross-sectional area of ​​the flow area between the second biasing portion 1612 and the fourth biasing portion 1622 will not be too small, thereby reducing the resistance encountered by the medium during flow. In this embodiment, the orthographic projection of the first biasing portion 1611 on the first surface coincides with the orthographic projection of the third biasing portion 1621 on the first surface, and the orthographic projection of the second biasing portion 1612 on the first surface coincides with the orthographic projection of the fourth biasing portion 1622 on the first surface, that is, they are located in the same plane perpendicular to the length direction of the fin 14. The first biasing portion 1611 and the third biasing portion 1621 protrude in the same direction, and the second biasing portion 1612 and the fourth biasing portion 1622 protrude in the same direction, thereby reducing the change in flow resistance of the medium flowing between the adjacent first heat transfer portion 161 and the second heat transfer portion 162, and improving the flow resistance stability between the first heat transfer portion 161 and the second heat transfer portion 162. In other embodiments, the orthographic projection of the first biasing portion 1611 on the first surface may partially overlap with the orthographic projection of the third biasing portion 1621 on the first surface, and the orthographic projection of the second biasing portion 1612 on the first surface may partially overlap with the orthographic projection of the fourth biasing portion 1622 on the first surface.

[0041] As shown in Figures 6, 11 and 13, further, along the length direction of the fin 14, the first offset portion 1611 and the second offset portion 1612 have the same length, and the third offset portion 1621 and the fourth offset portion 1622 have the same length, thereby improving the consistency of the fin 14, increasing the stability of the fluid pressure drop, and controlling the ratio of the flow areas on both sides of the first heat transfer portion 161 and the second heat transfer portion 162.

[0042] As shown in Figures 4 to 16, in this embodiment, the first heat transfer portion 161 includes a first base portion 1614, which is continuous along the length direction of the fin 14, a first biasing portion 1611 fixedly connected to the first base portion 1614, and a second biasing portion 1612 fixedly connected to the first base portion 1614. Since the first biasing portion 1611 and the second biasing portion 1612 are both fixedly connected to the first base portion 1614, the strength of the first heat transfer portion 161 is enhanced. The second heat transfer portion 162 includes a second base portion 1624, which is continuous along the length direction of the fin 14, a third biasing portion 1621 fixedly connected to the second base portion 1624, and a fourth biasing portion 1622 fixedly connected to the second base portion 1624. Since the third biasing portion 1621 and the fourth biasing portion 1622 are both fixedly connected to the first biasing portion 1624, the first biasing portion 1621 and the fourth biasing portion 1622 are fixedly connected to the first biasing portion 1624. The two bases 1624 are fixedly connected to strengthen the strength of the second heat transfer portion 162. In other embodiments, only the first heat transfer portion 161 may include the first base 1614, the first base 1614 is continuous along the length direction of the fin 14, the first biasing portion 1611 is fixedly connected to the first base 1614, and the second biasing portion 1612 is fixedly connected to the first base 1614. Alternatively, only the second heat transfer portion 162 includes the second base 1624, the second base 1624 is continuous along the length direction of the fin 14, the third biasing portion 1621 is fixedly connected to the second base 1624, and the fourth biasing portion 1622 is fixedly connected to the second base 1624. Since both the third biasing portion 1621 and the fourth biasing portion 1622 are fixedly connected to the second base 1624, the strength of the second heat transfer portion 162 is strengthened.

[0043] As shown in Figures 5, 13, and 14, the fin 14 has a first channel 17 that is continuous in the length direction of the fin 14. The medium flows in the first channel 17. A first channel 17 is provided between the first heat transfer portion 161 and the second heat transfer portion 162 that are fixedly connected to the same connecting portion 15. The first biasing portion 1611 and the fourth biasing portion 1622 are located in the same first channel 17. The first biasing portion 1611, the second biasing portion 1612, the third biasing portion 1621, and the fourth biasing portion 1622 all include a first section 181 and a second section 182. The first biasing portion 1611 includes a fifth end portion 16112, and the fourth biasing portion 1622 includes a sixth end portion 16222. Along the height direction of the fin 14, the first end portion 1611 is located at a position 1611a and a position 1611b. 111 and the fourth end 16221 are located on one side of the first channel 17, and the fifth end 16112 and the sixth end 16222 are located on the other side of the first channel 17. The distance between the first end 16111 and the fourth end 16221 is smaller than the distance between the fifth end 16112 and the sixth end 16222. Therefore, the width of the first channel 17 between the first end 16111 and the fourth end 16221 is smaller than the width of the first channel 17 between the fifth end 16112 and the sixth end 16222. Therefore, the width of the first channel 17 in the height direction of the fin 14 is uneven, and more medium flows through the first channel 17 between the fifth end 16112 and the sixth end 16222, which has a larger width. The uniformity of the medium flow, thereby affecting the heat exchange performance of the heat exchanger 11, the first section 181 of the first offset portion 1611 is closer to the first end 16111 than the second section 182 of the first offset portion 1611. Along the width direction of the fin 14, the second section 182 of the first offset portion 1611 is farther from the offset distance of the first section 181 of the first offset portion 1611 relative to the first side 154. The first section 181 of the fourth offset portion 1622 is closer to the fourth end 16221 than the second section 182 of the fourth offset portion 1622. Along the width direction of the fin 14, the second section 182 of the fourth offset portion 1622 is farther from the offset distance of the first section 181 of the fourth offset portion 1622 relative to the second side 155. Since the width of the first channel 17 is different in the height direction of the fin 14, the second section 182 is offset farther than the first section 181, thereby compensating for the width of the first channel 17 and making the width of the first channel 17 tend to be consistent along the height direction of the fin 14, thereby making the flow of the medium more uniform in the first channel 17. In this embodiment, the second sections 182 of the first offset portion 1611 and the fourth offset portion 1622 are both offset farther than the first section 181. In other embodiments, only the second section 182 of the first offset portion 1611 may be offset farther than the first section 181, or only the second section 182 of the fourth offset portion 1622 may be offset farther than the first section 181.

[0044] As shown in Figures 5, 13, and 14, the second biasing portion 1612 and the third biasing portion 1621 are located in the same first channel 17. The second biasing portion 1612 includes a seventh end portion 16122, and the third biasing portion 1621 includes an eighth end portion 16212. Along the height direction of the fin 14, the second end portion 16121 and the third end portion 16211 are located on one side of the first channel 17, and the seventh end portion 16122 and the eighth end portion 16212 are located on the other side of the first channel 17. The distance between the second end portion 16121 and the third end portion 16211 is smaller than the distance between the seventh end portion 16122 and the eighth end portion 16212. Therefore, the width of the first channel 17 between the second end 16121 and the third end 16211 is smaller than the width of the first channel 17 between the seventh end 16122 and the eighth end 16212. Therefore, the width of the first channel 17 in the height direction of the fin 14 is uneven, and more medium flows through the first channel 17 between the seventh end 16122 and the eighth end 16212, which has a larger width. This affects the uniformity of the medium flow and thus affects the heat exchange performance of the heat exchanger 11. The first section 181 of the second offset portion 1612 is closer to the second end 16121 than the second section 182 of the second offset portion 1612. Along the width direction of the fin 14, the second section 182 of the second offset portion 1612 is offset farther from the first side portion 154 than the first section 181 of the second offset portion 1612. The first section 181 of the third offset portion 1621 is closer to the third end portion 16211 than the second section 182 of the third offset portion 1621. Along the width direction of the fin 14, the second section 182 of the third offset portion 1621 is offset farther from the second side portion 155 than the first section 181 of the third offset portion 1621. Since the width of the first channel 17 is different in the height direction of the fin 14, the second end portion 1612 1 is further from the offset distance of the first end portion 16111, thereby compensating for the width of the first channel 17 and making the width of the first channel 17 tend to be consistent along the height direction of the fin 14, thereby making the flow of the medium more uniform in the first channel 17. In this embodiment, the second section 182 of the second offset portion 1612 and the third offset portion 1621 are both further from the offset distance of the first section 181. In other embodiments, only the second section 182 of the second offset portion 1612 may be further from the offset distance of the first section 181, or only the second section 182 of the third offset portion 1621 may be further from the offset distance of the first section 181.

[0045] As shown in Figures 17 to 24, the first biasing portion 1611 includes a first convex portion 16113 and a first face portion 16114. Along the width direction of the fin 14, the first convex portion 16113 protrudes from the first face portion 16114. The second biasing portion 1612 includes a second convex portion 16123 and a second face portion 16124. Along the width direction of the fin 14, the second convex portion 16123 protrudes from the second face portion 16124. The third biasing portion 1621 includes a third convex portion 16213 and a third face portion 16214. Along the width direction of the fin 14, the third convex portion 16213 protrudes from the third face portion 16214. The fourth biasing portion 1622 includes a fourth convex portion 16123. 223 and the fourth surface portion 16224, along the width direction of the fin 14, the fourth protrusion 16223 protrudes from the fourth surface portion 16224. Since along the width direction of the fin 14, the first protrusion 16113 protrudes from the first surface portion 16114, the second protrusion 16123 protrudes from the second surface portion 16124, the third protrusion 16213 protrudes from the third surface portion 16214, and the fourth protrusion 16223 protrudes from the fourth surface portion 16224, the first protrusion 16113, the second protrusion 16123, the third protrusion 16213, and the fourth protrusion 16223 are located in the flow channel, increasing the contact area with the medium, increasing the heat exchange area between the medium and the fin 14, and thereby improving the heat exchange performance of the heat exchanger 11.

[0046] As shown in Figures 17 to 24, a plurality of heat transfer portions 16 are arranged along the width direction of the fin 14, and a flow path is formed between the heat transfer portions 16. The first offset portion 1611, the second offset portion 1612, the third offset portion 1621, and the fourth offset portion 1622 are offsetly arranged in the flow path, dividing the flow path into a first flow channel 171 and a second flow channel 172, and the first flow channel 171 and the second flow channel 172 are alternately arranged, wherein the first offset portion 1611 and the second offset portion 1612 form a first flow channel 171 along the length direction of the fin 14, and the third offset portion 1621 and the fourth offset portion 1622 form a first flow channel 171 along the length direction of the fin 14. 21 and the fourth offset portion 1622 also form the first flow channel 171 along the length direction of the fin 14. Along the width direction of the fin 14, the adjacent first offset portion 1611 and the fourth offset portion 1622 form the second flow channel 172 along the length direction of the fin 14. The adjacent second offset portion 1612 and the third offset portion 1621 also form the second flow channel 172 along the length direction of the fin 14. The first offset portion 1611, the second offset portion 1612, the third offset portion 1621, and the offset and alternatingly arranged The fourth offset portion 1622 separates the medium into multiple streams, and the multiple streams of medium flow along the length direction of the fin 14, thereby enhancing the disturbance effect on the medium and the degree of turbulence of the medium, thereby enhancing the heat exchange performance of the heat exchanger 11. Furthermore, along the direction in which the first offset portion 1611 is offset relative to the first side portion 154, the first protrusion 16113 protrudes from the first base 1614, the second protrusion 16123 protrudes from the second base 1624, the fourth protrusion 16223 protrudes from the fourth base, and the third protrusion 16213 protrudes from the third base. That is, in the width direction of the fin 14, the protruding directions of the first protrusion 16113, the second protrusion 16123, the third protrusion 16213 and the fourth protrusion 16223 are the same, as shown in Figures 20 to 24. For any one of the first flow channel 171 and the second flow channel 172, at the same height of any cross section along the length direction of the fin 14, there is only one of the first protrusion 16113, the second protrusion 16123, the third protrusion 16213 and the fourth protrusion 16223, thereby reducing the probability that the flow channel is too narrow due to too many protrusions, thereby reducing the heat exchange performance.

[0047] As shown in Figures 20 to 24, in this embodiment, the second protrusion 16123 includes a first sub-protrusion 16125 and a second sub-protrusion 16126. Along the width direction of the fin 14, the first sub-protrusion 16125 and the second sub-protrusion 16126 have the same protruding direction relative to the second face portion 16124. The first protrusion 16113 includes a third sub-protrusion 16115 and a fourth sub-protrusion 16116. Along the width direction of the fin 14, the third sub-protrusion 16115 and the fourth sub-protrusion 16116 are aligned. The first surface portion 16114 protrudes in the same direction, the third convex portion 16213 includes a fifth sub-convex portion 16215 and a sixth sub-convex portion 16216. Along the width direction of the fin 14, the fifth sub-convex portion 16215 and the sixth sub-convex portion 16216 protrude in the same direction relative to the third surface portion 16214. The fourth convex portion 16223 includes a seventh sub-convex portion 16225 and an eighth sub-convex portion 16226. Along the width direction of the fin 14, the seventh sub-convex portion 16225 and the eighth sub-convex portion 16226 are protruding in the same direction relative to the third surface portion 16214. 226 protrudes in the same direction relative to the fourth face portion 16224. In other embodiments, as shown in FIG. 23 , the first sub-protrusion 16125 and the second sub-protrusion 16126 may protrude in opposite directions relative to the second face portion 16124, the third sub-protrusion 16115 and the fourth sub-protrusion 16116 may protrude in opposite directions relative to the first face portion 16114, the fifth sub-protrusion 16215 and the sixth sub-protrusion 16216 may protrude in opposite directions relative to the third face portion 16214, and the The seventh sub-protrusion 16225 and the eighth sub-protrusion 16226 protrude in opposite directions relative to the fourth surface portion 16224. In this embodiment, the first protrusion 16113, the second protrusion 16123, the third protrusion 16213, and the fourth protrusion 16223 each include two sub-protrusions. In other embodiments, the first protrusion 16113, the second protrusion 16123, the third protrusion 16213, and the fourth protrusion 16223 may also include multiple sub-protrusions to increase the flow disturbance effect on the medium, enhance the turbulence level of the medium, and thereby enhance the heat exchange performance.

[0048] As shown in Figures 17 to 24, a first surface is defined as being perpendicular to the width direction of the fin 14, the second heat transfer portion 162 and the first heat transfer portion 161 are alternately arranged along the width direction of the fin 14, the third offset portion 1621 coincides with the orthographic projection of the first offset portion 1611 on the first surface, the third convex portion 16213 and the orthographic projection of the first convex portion 16113 on the first surface are at least partially offset, and the orthographic projection of the third convex portion 16213 and the first convex portion 16113 on the first surface are partially offset. Compared with the arrangement in which the third convex portion 16213 coincides with the first convex portion 16113, due to the staggered arrangement of the third convex portion 16213 and the first convex portion 16113, the flow cross-sectional area of ​​the flow channel is more uniform, the medium flows more uniformly in the flow channel, and the heat exchange performance is enhanced. As shown in Figures 17 to 24, the fourth offset portion 16213 coincides with the orthographic projection of the first convex portion 16113 on the first surface. The positioning portion 1622 coincides with the orthographic projection of the second biasing portion 1612 on the first surface, the fourth convex portion 16223 and the orthographic projection of the second convex portion 16123 on the first surface are at least partially offset, and the fourth convex portion 16223 and the orthographic projection of the second convex portion 16123 on the first surface are partially offset. Compared with the arrangement in which the fourth convex portion 16223 coincides with the second convex portion 16123, due to the offset arrangement of the fourth convex portion 16223 and the second convex portion 16123, the flow cross-sectional area of ​​the flow channel is more uniform, the medium flows more uniformly in the flow channel, and the heat exchange performance is enhanced. In other embodiments, only the third convex portion 16213 and the orthographic projection of the first convex portion 16113 on the first surface may be at least partially offset, or only the fourth convex portion 16223 and the orthographic projection of the second convex portion 16123 on the first surface may be at least partially offset.

[0049] As shown in Figures 17 to 24, a first flow channel 171 is formed between the first offset portion 1611 and the second offset portion 1612 along the length direction of the fin 14, and the first flow channel 171 is also formed between the third offset portion 1621 and the fourth offset portion 1622 along the length direction of the fin 14. Along the width direction of the fin 14, a second flow channel 172 is formed between the adjacent first offset portion 1611 and the fourth offset portion 1622 along the length direction of the fin 14, and the adjacent second offset portion 1612 and the third offset portion 1621 and the fourth offset portion 1622 along the width direction of the fin 14. The second flow channel 172 is also formed between the three offset portions 1621 along the length direction of the fin 14. Along the width direction of the fin 14, the first flow channel 171 and the second flow channel 172 are alternately arranged. The ratio of the flow area of ​​the first flow channel 171 to the second flow channel 172 is 0.6-1.5. The flow area ratio of the first flow channel 171 to the second flow channel 172 is controlled to be 0.6-1.5, thereby controlling the medium flow ratio through the first flow channel 171 and the second flow channel 172, reducing the difference in flow between the first flow channel 171 and the second flow channel 172, and thereby improving the heat exchange performance.

[0050] Furthermore, the ratio of the flow area of ​​the first flow channel 171 to the second flow channel 172 is 0.8-1.3, which further controls the medium flow ratio through the first flow channel 171 and the second flow channel 172, reduces the difference in flow between the first flow channel 171 and the second flow channel 172, and thereby improves the heat exchange performance.

[0051] It should be noted that the above provides a detailed introduction to the fins and heat exchanger provided in this application. This article uses specific examples to illustrate the principles and implementation methods of this application. The description of the above examples is only intended to help understand the core ideas of this application. It should be noted that for ordinary technicians in this technical field, without departing from the principles of this application, several improvements and modifications can be made to this application, and these improvements and modifications also fall within the scope of protection of the claims of this application.

Claims

1. A heat exchanger (11), characterized in that: The invention relates to a heat exchange heat exchanger comprising a plurality of stacked heat exchange plates (12) and fins (14) located between adjacent heat exchange plates (12), wherein the fins (14) comprise a connecting portion (15) and a heat transfer portion (16), wherein the connecting portion (15) extends in the length direction of the fins (14), and the heat transfer portion (16) comprises a first heat transfer portion (161), wherein the first heat transfer portion (161) comprises a first offset portion (1611) and a second offset portion (1612), and wherein the connecting portion (15) comprises a first side portion (154), wherein along the height direction of the fins (14), the first offset portion (1611) comprises a first end portion (16111), and the second offset portion (1612) comprises a second end portion (16121), and wherein the first side portion (154) and the first end portion (1612) are aligned with each other. 111), the first side portion (154) is fixedly connected to the second end portion (16121), along the width direction of the fin (14), the first biasing portion (1611) and the second biasing portion (1612) are biased in opposite directions relative to the first side portion (154), along the length direction of the fin (14), at least part of the first biasing portion (1611) and the second biasing portion (1612) are alternately arranged, and for the alternately arranged first biasing portion (1611) and the second biasing portion (1612), there is a first opening (1613) between the first biasing portion (1611) and the second biasing portion (1612), and the opening direction of the first opening (1613) is substantially the same as the length direction of the fin (14).

2. The heat exchanger according to claim 1, characterized in that The heat transfer portion (16) includes a second heat transfer portion (162), the second heat transfer portion (162) includes a third biasing portion (1621) and a fourth biasing portion (1622), the connecting portion (15) includes a second side portion (155), along the height direction of the fin (14), the third biasing portion (1621) includes a third end portion (16211), the fourth biasing portion (1622) includes a fourth end portion (16221), the second side portion (155) is fixedly connected to the third end portion (16211), the second side portion (155) is fixedly connected to the fourth end portion (16221), along the height direction of the fin ( 14), the third biasing portion (1621) and the fourth biasing portion (1622) are offset in opposite directions relative to the second side portion (155), and along the length direction of the fin (14), at least part of the third biasing portion (1621) and the fourth biasing portion (1622) are alternately arranged, and for the alternately arranged third biasing portion (1621) and the fourth biasing portion (1622), there is a second opening (1623) between the third biasing portion (1621) and the fourth biasing portion (1622), and the second opening (1623) is oriented in the length direction of the fin (14).

3. The heat exchanger according to claim 2, characterized in that Along the length direction of the fin (14), the first biasing portion (1611) and the second biasing portion (1612) are alternately arranged, and / or, along the length direction of the fin (14), the third biasing portion (1621) and the fourth biasing portion (1622) are alternately arranged.

4. The heat exchanger according to claim 2 or 3, characterized in that Along the width direction of the fin (14), the first heat transfer portion (161) and the second heat transfer portion (162) are alternately arranged, defining a first surface perpendicular to the width direction of the fin (14), the orthographic projection of the first bias portion (1611) on the first surface coincides with the orthographic projection of the third bias portion (1621) on the first surface, the orthographic projection of the second bias portion (1612) on the first surface coincides with the orthographic projection of the fourth bias portion (1622) on the first surface, and along the width direction of the fin (14), the bias direction of the first bias portion (1611) relative to the first side portion (154) is the same as the bias direction of the third bias portion (1621) relative to the second side portion (155), and the bias direction of the second bias portion (1612) relative to the first side portion (154) is the same as the bias direction of the fourth bias portion (1622) relative to the second side portion (155).

5. The heat exchanger according to any one of claims 2 to 4, characterized in that: Along the length direction of the fin (14), the first biasing portion (1611) and the second biasing portion (1612) have the same length, and the third biasing portion (1621) and the fourth biasing portion (1622) have the same length.

6. The heat exchanger according to any one of claims 2 to 5, characterized in that: The first heat transfer portion (161) comprises a first base portion (1614), the first base portion (1614) is continuous along the length direction of the fin (14), the first biasing portion (1611) is fixedly connected to the first base portion (1614), and the second biasing portion (1612) is fixedly connected to the first base portion (1614); And / or, the second heat transfer portion (162) includes a second base portion (1624), the second base portion (1624) is continuous along the length direction of the fin (14), the third biasing portion (1621) is fixedly connected to the second base portion (1624), and the fourth biasing portion (1622) is fixedly connected to the second base portion (1624).

7. The heat exchanger according to any one of claims 2 to 6, characterized in that: The fin (14) has a first channel (17) that is continuous in the length direction of the fin (14); the first channel (17) is provided between the first heat transfer portion (161) and the second heat transfer portion (162) that are fixedly connected to the same connecting portion (15); the first biasing portion (1611) and the fourth biasing portion (1622) are located in the same first channel (17); the first biasing portion (1611), the second biasing portion (1612), the third biasing portion (1621), and the fourth biasing portion (1622) are provided in a plurality of directions. 22) include a first section (181) and a second section (182), the first offset portion (1611) includes a fifth end portion (16112), the fourth offset portion (1622) includes a sixth end portion (16222), along the height direction of the fin (14), the first end portion (16111) and the fourth end portion (16221) are located on one side of the first channel (17), the fifth end portion (16112) and the sixth end portion (16222) are located on the other side of the first channel (17), and the first offset portion (16111) and the fourth end portion (16221) are located on the other side of the first channel (17). The distance between the first end portion (16111) and the fourth end portion (16221) is smaller than the distance between the fifth end portion (16112) and the sixth end portion (16222); the first section portion (181) of the first offset portion (1611) is closer to the first end portion (16111) than the second section portion (182) of the first offset portion (1611); and along the width direction of the fin (14), the second section portion (182) of the first offset portion (1611) is closer to the first end portion (16111) than the second section portion (182) of the first offset portion (1611). The first section (181) of the fourth offset portion (1622) is offset farther from the first side portion (154), and / or the first section (181) of the fourth offset portion (1622) is closer to the fourth end portion (16221) than the second section (182) of the fourth offset portion (1622), and along the width direction of the fin (14), the second section (182) of the fourth offset portion (1622) is offset farther from the second side portion than the first section (181) of the fourth offset portion (1622).

8. The heat exchanger according to claim 7, characterized in that The second biasing portion (1612) and the third biasing portion (1621) are located in the same first channel (17), the second biasing portion (1612) includes a seventh end portion (16122), and the third biasing portion (1621) includes an eighth end portion (16212). Along the height direction of the fin (14), the second end portion (16121) and the third end portion (16211) are located on one side of the first channel (17), and the seventh end portion (16122) and the eighth end portion (16212) are located on the other side of the first channel (17). The distance between the second end portion (16121) and the third end portion (16211) is smaller than the distance between the seventh end portion (16122) and the eighth end portion (16212). The first section (17) of the second biasing portion (1612) is 81) is closer to the second end portion (16121) than the second section (182) of the second offset portion (1612), and along the width direction of the fin (14), the second section (182) of the second offset portion (1612) is farther from the offset distance of the first section (181) of the second offset portion (1612) relative to the first side portion (154), and / or the first section (181) of the third offset portion (1621) is closer to the third end portion (16211) than the second section (182) of the third offset portion (1621), and along the width direction of the fin (14), the second section (182) of the third offset portion (1621) is farther from the offset distance of the first section (181) of the third offset portion (1621) relative to the second side portion (155).

9. The heat exchanger according to claim 2, characterized in that The first biasing portion (1611) includes a first convex portion (16113) and a first surface portion (16114), and along the width direction of the fin (14), the first convex portion (16113) protrudes from the first surface portion (16114); the second biasing portion (1612) includes a second convex portion (16123) and a second surface portion (16124), and along the width direction of the fin (14), the second convex portion (16123) protrudes from the second surface portion (16124). The third biasing portion (1621) includes a third protrusion (16213) and a third face portion (16214), and along the width direction of the fin (14), the third protrusion (16213) protrudes from the third face portion (16214), and the fourth biasing portion (1622) includes a fourth protrusion (16223) and a fourth face portion (16224), and along the width direction of the fin (14), the fourth protrusion (16223) protrudes from the fourth face portion (16224).

10. The heat exchanger according to claim 9, characterized in that The second convex portion (16123) includes a first sub-convex portion (16125) and a second sub-convex portion (16126), and / or the first convex portion (16113) includes a third sub-convex portion (16115) and a fourth sub-convex portion (16116), and / or the third convex portion (16213) includes a fifth sub-convex portion (16215) and a sixth sub-convex portion (16216), and / or the fourth convex portion (16223) includes a seventh sub-convex portion (16225) and an eighth sub-convex portion (16226).

11. The heat exchanger according to claim 9 or 10, characterized in that A first surface is defined as being perpendicular to the width direction of the fin (14), the second heat transfer portion (162) and the first heat transfer portion (161) are alternately arranged along the width direction of the fin (14), the orthographic projections of the third offset portion (1621) and the first offset portion (1611) on the first surface coincide with each other, and the orthographic projections of the third convex portion (16213) and the first convex portion (16113) on the first surface are at least partially misaligned; And / or, the orthographic projections of the fourth biasing portion (1622) and the second biasing portion (1612) on the first surface coincide with each other, and the orthographic projections of the fourth convex portion (16223) and the second convex portion (16123) on the first surface are at least partially misaligned.

12. The heat exchanger according to any one of claims 9 to 11, characterized in that: A first flow channel (171) is formed between the first biasing portion (1611) and the second biasing portion (1612) along the length direction of the fin (14), and the first flow channel (171) is also formed between the third biasing portion (1621) and the fourth biasing portion (1622) along the length direction of the fin (14). Along the width direction of the fin (14), a second flow channel (172) is formed between the adjacent first biasing portion (1611) and the fourth biasing portion (1622) along the length direction of the fin (14), and the second flow channel (172) is also formed between the adjacent second biasing portion (1612) and the third biasing portion (1621) along the length direction of the fin (14). The ratio of the flow area of ​​the first flow channel (171) to the second flow channel (172) is 0.6-1.

5.

13. The heat exchanger according to claim 12, characterized in that The ratio of the flow area of ​​the first flow channel (171) to the flow area of ​​the second flow channel (172) is 0.8-1.

3.

14. The heat exchanger according to any one of claims 1 to 13, characterized in that: Along the width direction of the fin (14), one side of the connecting portion (15) is fixedly connected to one of the heat transfer portions (16), and the other side of the connecting portion (15) is fixedly connected to another of the heat transfer portions (16). The connecting portion (15) includes a planar portion (152).

Images