CN216159702U

CN216159702U - Fin plate and heat exchanger with same

Info

Publication number: CN216159702U
Application number: CN202122007341.XU
Authority: CN
Inventors: 不公告发明人
Original assignee: Zhejiang Sanhua Automotive Components Co Ltd
Current assignee: Zhejiang Sanhua Automotive Components Co Ltd
Priority date: 2021-08-24
Filing date: 2021-08-24
Publication date: 2022-04-01
Anticipated expiration: 2031-08-24

Abstract

The application discloses a fin plate and a heat exchanger with the fin plate, wherein the fin plate comprises a first cutter withdrawing structure, the first cutter withdrawing structure comprises two first fins and a second fin, the second fin is positioned between the two first fins, the first fin comprises a first base part, a first top part, a first side part and a second side part, the second fin comprises a second base part, a second top part, a third side part and a fourth side part, the third side part is staggered with the first side part and forms a first window, the fourth side part is staggered with the second side part and forms a second window, the width of the first window is smaller than 1.8mm, the width of the second window is smaller than 1.8mm, the first cutter withdrawing structure is provided with a first window and a second window for improving the fluid staggered area of the fin plate, the heat exchange effect of the heat exchanger is improved, the width of the first window and the second window is controlled, and the cutter withdrawing effect of the first cutter withdrawing structure is ensured, is convenient for processing.

Description

Fin plate and heat exchanger with same

Technical Field

The application relates to the technical field of heat exchange, in particular to a fin plate and a heat exchanger with the fin plate.

Background

The heat exchanger sets up the mode promotion heat exchanger's of fin plate heat transfer effect usually in heat transfer passageway, in order to promote the crisscross area of fluid of fin plate, roll forming fin plate is adopted usually, gear hobbing fin plate promptly, gear hobbing fin plate is equipped with the crisscross area of a plurality of fins in order to promote fluid, for the ease of processing, gear hobbing fin plate is equipped with the gear hobbing of a certain amount and moves back the sword structure, gear hobbing moves back the sword structure and is the fin of width broad usually, the crisscross area of fluid that the too wide gear hobbing moved back the sword structure and has reduced the fin plate, influence the heat transfer performance of heat exchanger.

SUMMERY OF THE UTILITY MODEL

The application provides a pair of fin plate and have heat exchanger of this fin plate, not only the processing of being convenient for promotes the crisscross area of fluid of fin plate moreover.

An aspect of an embodiment of the present application provides a fin plate including a first relief structure including two first fins and a second fin located between the two first fins, the first fins including a first base portion, a first top portion, a first side portion and a second side portion defining a first direction and a second direction, the first direction being disposed at an angle to the second direction along the first direction, the first side portion and the second side portion being located on opposite sides of the first top portion, the first side portion or the second side portion connecting the first top portion and the first base portion, and the second fins including a second base portion, a second top portion, a third side portion and a fourth side portion located on opposite sides of the second top portion along the first direction, the third side portion or the fourth side portion connecting the second top portion and the second base portion,

the first fin and the second fin are arranged along a second direction, a first side portion of the first fin and a third side portion of the second fin are staggered along the first direction, a first window is formed between the third side portion and the first side portion, a second side portion of the first fin and a fourth side portion of the second fin are staggered along the first direction, a second window is formed between the fourth side portion and the second side portion, the width of the first window is smaller than 1.8mm along the first direction, and the width of the second window is smaller than 1.8 mm.

Another aspect of the embodiment of the application still provides a heat exchanger, including piling up a plurality of heat transfer slab pieces that set up and being located the fin plate between at least partial adjacent heat transfer slab piece, the fin plate is above-mentioned fin plate, forms heat transfer passageway between the adjacent heat transfer slab piece, heat transfer passageway is including first heat transfer passageway and the second heat transfer passageway that does not communicate each other, first heat transfer passageway and second heat transfer passageway set up along heat transfer slab's stacking direction in turn, the fin plate is located first heat transfer passageway.

Because the first tool retracting structure is provided with the fluid staggered area of the first window and the second window for lifting the fin plate, the heat exchange effect of the heat exchanger is improved, the width of the first window and the width of the second window are controlled to be smaller than 1.8mm, the cutting depth of the hobbing is prevented from being too deep during processing, the tool retracting effect of the first tool retracting structure is ensured, the processing of the fin plate is facilitated, and the stability of the rolling process is ensured.

Drawings

FIG. 1 is a schematic perspective view of a heat exchanger according to the present application;

FIG. 2 is a schematic illustration of an exploded view of the heat exchanger of the present application;

FIG. 3 is a schematic view of a partial cross-sectional structure of a heat exchanger according to the present application;

FIG. 4 is an enlarged schematic view of the structure at A in FIG. 3;

FIG. 5 is a schematic view of another embodiment of a heat exchanger according to the present application in partial cross-section;

FIG. 6 is an enlarged view of the structure at B in FIG. 5;

FIG. 7 is a perspective view of the first fin plate;

FIG. 8 is an enlarged view of the structure of FIG. 7 at C;

FIG. 9 is an enlarged view of the structure of FIG. 7 at D;

FIG. 10 is a perspective view of the third fin plate;

FIG. 11 is an enlarged view of the structure of FIG. 10 at E;

FIG. 12 is a perspective view of the second fin plate;

fig. 13 is an enlarged schematic view of the structure at F in fig. 12.

Detailed Description

Referring to fig. 1 to 13, the present application provides a heat exchanger 10, including a plurality of heat exchange plates 2 arranged in a stacked manner, heat exchange channels are provided between adjacent heat exchange plates 2, the heat exchange channel 3 includes a first heat exchange channel 31 and a second heat exchange channel 32 which are not communicated with each other, the first heat exchange channel 31 and the second heat exchange channel 32 are alternately arranged along the stacking direction of the heat exchange plates 2, the first heat exchange channel 31 is used for circulating one medium, such as a refrigerant, and the second heat exchange channel 32 is used for circulating another medium, such as a cooling liquid, of course, when the heat exchanger 10 is used as an intermediate heat exchanger 10, the first heat exchange channel 31 and the second heat exchange channel 32 can be used for circulating the same medium with different temperatures.

As shown in fig. 2-6, fin plates 1 are disposed in the first heat exchange channel 31 and the second heat exchange channel 32, the heat exchange plate 2 is provided with an angular hole 21 communicated with the first heat exchange channel 31 or the second heat exchange channel 32, and the fin plate 1 is provided with a hole 18 or a notch 19 avoiding the angular hole 21. Certainly, the fin plate 1 may also be only disposed in the first heat exchanging channel 31, and the second heat exchanging channel 32 may have a turbulence effect that is improved by the arrangement of the protrusions and the like in the second heat exchanging channel 32.

As shown in fig. 2 to 9, a first fin plate 11 is disposed in the first heat exchange channel 31, and the first fin plate 11 includes a plurality of first fin groups, and the plurality of first fin groups are arranged along a first direction, where the first direction is a direction N shown in fig. 7 and 5, that is, a length direction of the heat exchanger 10. The first fin group includes a first relief structure 141, the first relief structure 141 includes two first fins 111 and one second fin 113, the second fin 113 is located between the two first fins 111, as shown in fig. 6, the first fin 111 includes a first base 1114, a first top 1111, a first side 1112 and a second side 1113, the first side 1112 and the second side 1113 are located on opposite sides of the first top 1111 in the first direction, the first side 1112 connects the first top 1111 and the first base 1114, the second side 1113 connects the first top 1111 and the first base 1114 of another first fin 111 adjacent thereto in the first direction, the second fin 113 includes a second base 1134, a second top 1131, a third side 1132 and a fourth side 1133, the third side 1132 and the fourth side 1133 are located on opposite sides of the second top 1131 in the first direction, the third side 1132 connects the second top 1131 and the second base 1134, the fourth side 1133 connects the second top 1131 and the second base 1134 of another second fin 113 adjacent to the second top in the first direction, and the first fin 111 and the second fin 113 are arranged in the second direction, where the second direction is a direction M shown in fig. 3 and fig. 7, that is, a width direction of the heat exchanger 10, and the first direction is disposed at an angle to the second direction, in this embodiment, the first direction and the second direction are disposed perpendicularly, but of course, the first direction and the second direction may be disposed at other angles, for example, 45 °, 65 °, and the like.

As shown in fig. 6, 8 and 9, the third side 1132 of the second fin 113 in the first retracting structure 141 is offset from the first side 1112 of the first fin 111 along the first direction, and a first window 1134 is formed between the third side 1132 and the first side 1112, the fourth side 1133 of the second fin 113 is offset from the second side 1113 of the first fin 111 along the first direction, and a second window 1135 is formed between the fourth side 1133 and the second side 1113, along the first direction, the width of the first window is smaller than 1.8mm, and the width of the second window is smaller than 1.8mm, in the application, because the first retracting structure 141 is provided with the first window 1134 and the second window 1135, the fluid interleaving area of the fin plate 1 is increased, the heat exchange effect of the heat exchanger 10 is increased, and the widths of the first window 1134 and the second window 1135 are both smaller than 1.8mm, the cutting depth of the hobbing is prevented from being too deep during machining, and the retracting effect of the first retracting structure 141 is ensured, the fin plate 1 can be conveniently processed, and the stability of the rolling process is ensured.

In some embodiments, the fin plate 1 further includes a plurality of third fins 112, the third fins 112 include a third base 1124, a third top 1121, a fifth side 1122 and a sixth side 1123, the fifth side 1122 and the sixth side 1123 are located on opposite sides of the third top 1121 in the first direction, the fifth side 1122 connects the third top 1121 and the third base 1124, and the sixth side 1123 connects the third top 1121 and the third base 1124 of another third fin 112 adjacent to the third top 1121 in the first direction, wherein the first fins 111 may be plural, at least some of the first fins 111 and the third fins 112 in the first fin group are alternately arranged in the second direction, it is noted that the first side 1112 or the second side 1113 of the first fin 111 may also be connected to the fifth side 1122 or the sixth side 1123 of the third fin 112, or connected to the fourth side 1132 or the fourth side 1133 of the second fin 113, and the same applies, the second side 1122 or the fifth side 1123 of the third fin 112 may also be connected to the first side 1112 or the second side 1113 of the first fin 111 or to the third side 1132 or the fourth side 1133 of the second fin 113, i.e., at least some of the first fins 111, the third fins 112, or the second fins 113 in adjacent first fin groups are not aligned in the first direction.

In some embodiments, as shown in fig. 6, 8 and 9, the first side 1112 is offset from the fifth side 1122 and the third window 1114 is formed between the first side 1112 and the fifth side 1122, the second side 1113 is offset from the sixth side 1123 and the fourth window 1115 is formed between the second side 1113 and the sixth side 1123 in the first direction, as shown in fig. 6, the width W1 of the third window 1114 is greater than the width W3 of the first window 1134, the width W2 of the fourth window 1115 is greater than the width W4 of the second window 1135 in the first direction, since the first retracting structure 141 includes the second fin 113 and two first fins 111 located on both sides of the second fin 113, the first window 1134 and the second window 1135 are formed between the first fin 111 and the second fin 113, the first window 1134 and the second window 1135 increase the fluid interleaving area of the fin plate 1, increase the heat exchanger performance of the heat exchanger 10, the first retracting structure 141 comprises the second fin 113 and two first fins 111 located on two sides of the second fin 113, so that the first retracting structure 141 has a sufficient width, the width of a third window 1114 located between the first fin 111 and the third fin 112 in the first direction is greater than the width of a first window 1134 located between the second fin 113 and the first fin 111, the width of a fourth window 1115 located between the first fin 111 and the third fin 112 in the first direction is greater than the width of a second window 1135 located between the second fin 113 and the first fin 111, and the width of the first retracting structure 141 and the widths of the first window 1134 and the second window 1135 in the first retracting structure 141 are controlled to achieve a retracting effect, so that the machining of the fin plate 1 is facilitated, and the stability of the rolling process is ensured. The width of the third window 1114 may be the same as or different from the width of the fourth window 1115, and the width of the first window 1134 may be the same as or different from the width of the second window 1135.

As shown in fig. 8, the first fins 111 and the third fins 112 are alternately arranged along the second direction, the fifth side portions 1122 of the third fins 112 and the third side portions 1132 of the second fins 113 are located on the same side of the first side portions 1112 of the first fins 111, as shown in the figure, are located on the left side of the first side portions 1112 of the first fins 111, i.e. the third fins 112 and the second fins 113 project in the same direction with respect to the first fins 111, of course, in the first direction, the fifth side portion 1122 of the third fin 112 and the third side portion 1132 of the second fin 113 are located at both sides of the first side portion 1112 of the first fin 111, i.e. the third fins 112 and the second fins 113 project in opposite directions with respect to the first fins 111, that is, the second fins 113 may protrude toward different directions with respect to the first fins 111, as long as it is ensured that the width of the third window 1114 is greater than the width of the first window 1134, and the width of the fourth window 1115 is greater than the width of the second window 1135. As shown in fig. 5 and 6, in the first direction, the width of the third window 1114 is W1, the width of the fourth window 1115 is W2, the width of the first window 1134 is W3, the width of the second window 1135 is W4, wherein 0.3 ≦ W3/W1 ≦ 0.9, and 0.3 ≦ W4/W2 ≦ 0.9, wherein the width of the third window 1114, W1, or the width of the fourth window 1115, W2 may be specifically 0.4-2mm, specifically, as shown in fig. 6, the width of the third window 1114 and the width of the fourth window 1115 are both 0.7mm, and the width of the first window 1134 and the width of the second window 1135 are both 0.4mm, and by controlling the relationship between the widths of the first window 1134 and the second window 1135 and the widths of the third window 1114 and the fourth window 1115, the width of the third window 1134 and the fourth window 1135 is prevented from being too large, the cutting depth of the hobbing is reduced, and the hobbing depth is facilitated.

In some embodiments, the width of the third window 1114 and the width of the fourth window 1115 are both greater than the width of the first window 1134 and the width of the second window 1135, the sum of the number of the third window 1114 and the fourth window 1115 is defined as a1, the sum of the number of the first window 1134 and the number of the second window 1135 is defined as a2, wherein a2/(a1+ a2) ≦ 0.3, the sum of the number of the first window 1134 and the number of the second window 1135 is not greater than the sum of the number of the third window 1114 and the number of the fourth window 1115, and particularly, a2/(a1+ a2) ≦ 0.3, the fin plate is provided with a sufficient number of the third window 1114 and the fourth window 1114 for the fluid to flow around, the cross-over area of the fluid is increased, the flow resistance of the fluid is decreased, and a number of the first window 1134 and the second window 1135 is provided to facilitate the machining of the fin plate 1, ensure the stability of the rolling process, and the partial fluid flow of the fluid through the first window 1134 and the second window 1135, the fluid staggered area of the fin plate is increased, and therefore the heat exchange performance of the heat exchanger is improved.

As shown in fig. 7 to 9, the widths of the first fin 111, the second fin 113 and the third fin 112 are equal in the second direction, that is, in the width direction M of the heat exchanger, wherein the widths of the first fin 111, the second fin 113 and the third fin 112 all satisfy 0.4-2.5mm, the lengths of the first top 1111 of the first fin 111, the third top 1121 of the third fin 112 and the second top 1131 of the second fin 113 are equal in the first direction, the width of the third window 1114 is equal to the width of the fourth window 1115, the width of the first window 1134 is equal to the width of the second window 1135, only the width of the third window 1114 is controlled to be greater than the width of the first window 1134, and the width of the fourth window 1115 is controlled to be greater than the width of the second window 1135. Of course, the width of the second fin 113 may also be greater than the widths of the first fin 111 and the third fin 112, defining the width of the first fin 111 as b1, the width of the second fin 113 as b3, and the width of the third fin 112 as b2, where b1 is not less than b3 is not less than 3b1, and b2 is not less than b3 is not less than 3b2, so as to better ensure the stability of the rolling process.

As shown in fig. 7 and 8, the first fin plate 11 includes a plurality of first fin groups arranged in the length direction N of the heat exchanger 10, each first fin group includes a plurality of first fin units, each first fin unit includes a plurality of first fins 111 and third fins 112 alternately arranged in the width direction M of the heat exchanger 10, a first retracting structure is provided between adjacent first fin units, the first retracting structures of adjacent first fin groups are aligned in the first direction, and of course, the second fins 113 of adjacent first fin groups may be staggered in the length direction of the heat exchanger 10.

In some embodiments, the first fin group further includes a second relief structure, as shown in fig. 9, the second relief structure 142 includes a second fin 113 and two third fins 112 on either side of the second fin 113, a third window 1114 is located between a fifth side 1122 of the third fin 112 and a third side 1132 of the second fin 113, and a fourth window 1115 is located between a sixth side 1123 of the third fin 112 and a fourth side 1133 of the second fin 113. The number of the first fins 111 in the first fin unit may be equal, the number of the third fins 112 in the first fin unit may be equal, as shown in fig. 8 and 9, the first fin units each have twelve first fins 111 and twelve third fins 112, of course, the number of the first fins 111 and the third fins 112 in the first fin unit may not be equal, alternatively, the number of the first fins 111 or the third fins 112 may be unequal between at least some of the first fin units, that is, the outermost fins of the first fin unit may be the first fins 111 or the third fins 112, as shown in fig. 8, when the outermost fin of the first fin unit is the third fin 112, a first retracting structure 141 may be disposed between adjacent first fin units, as shown in fig. 9, when the outermost fin of the first fin unit is the first fin 111, the second retracting structure 142 may be disposed between adjacent first fin units. Specifically, the second fins 113 may be entirely disposed between adjacent first fins 111, the first windows 1134 are located between the first side portions 1112 of the first fins 111 and the third side portions 1132 of the second fins 113, the second windows 1135 are located between the second side portions 1113 of the first fins 111 and the fourth side portions 1133 of the second fins 113, of course, a portion of the second fins 113 may be disposed between the adjacent third fins 112, a portion of the second fins 113 may be disposed between the adjacent first fins 111, the first window 1134 may be disposed between the fifth side portion 1122 of the third fin 112 and the third side portion 1132 of the second fin 113, in addition to being disposed between the first side portion 1112 of the first fin 111 and the third side portion 1132 of the second fin 113, and the second window 1135 may be disposed between the sixth side portion 1123 of the third fin 112 and the fourth side portion 1133 of the second fin 113, in addition to being disposed between the second side portion 1113 of the first fin 111 and the fourth side portion 1133 of the second fin 113.

In some embodiments, as shown in fig. 8 and 9, the first fin group further includes a third retracting structure 143, the third retracting structure 143 includes a fourth fin 114, the fourth fin 114 is located between adjacent first fins 111 or third fins 112, the first fins 111, third fins 112 and second fins 113 each have a width smaller than that of the fourth fin 114, the fin plate 1 has a first side portion 151 and a second side portion 152 along the second direction, the third retracting structure 143 includes two, one is close to the first side portion 151 and one is close to the second side portion 152, the first retracting structure 141 is located between the two third retracting structures 143, since the whole fin plate 1 is easier to apply force to the whole fin plate 1 in the area close to the first side portion 151 and the second side portion 152 during the rolling process, the third retracting structure 143 with a wider width is located close to the first side portion 151 or the second side portion 152, the effect of tool retracting is easily achieved, moreover, in the heat exchanger 10, in the areas close to the first edge 151 and the second edge 152, the heat exchange plate 2 generally has a flanging structure with a certain inclination angle, and in order to achieve reasonable assembly of the fin plate 1, a certain installation gap is generally set, so as to ensure the flow area of the heat exchange fluid therein, and the lifting of the third window 1114 and the fourth window 1115 in the first tool retracting structure 141 or the second tool retracting structure 142 on the fluid staggering area is not greatly affected in this area. The fin plate 1 structure is more beneficial to the heat exchanger 10 with a wider first heat exchange channel 31, and especially for an oil cooler, the heat exchanger is limited by product installation space and application scenes, and has a smaller length-width ratio or an outline profile approximate to a positive direction, so that the heat exchanger has more application value.

As shown in fig. 10 and 11, a third fin plate 12 may be disposed in the second heat exchange channel 32, the third fin plate 12 includes a plurality of first fin groups arranged in a width direction M of the heat exchanger 10, each of the first fin groups includes a plurality of first fin units including a plurality of first fins 111 and third fins 112 alternately disposed in a length direction N of the heat exchanger 10, a second fin 113 is disposed between adjacent first fin units, the first fin groups include a plurality of first fins 111 and a plurality of third fins 112, the first fins 111 include a first base 114, a first top 1111, a first side 1112 and a second side 1113, the first side 1112 and the second side 1113 are located on opposite sides of the first top 1111 in the width direction of the heat exchanger, the first side 1112 connects the first top 1111 to the first base 1114, the second side 1113 connects the first top 1111 to the first base 1114, the third fin 112 includes a third base 1124, a third top 1121, a fifth side 1122 and a sixth side 1123, the fifth side 1122 and the sixth side 1123 are located on opposite sides of the third top 1121 in the width direction of the heat exchanger, the fifth side 1122 connects the third top 1121 and the third base 1124, the sixth side 1123 connects the third top 1121 and the third base 1124, the second fin 113 includes a second base 1134, a second top 1131, a third side 1132 and a fourth side 1133, the third side 1132 and the fourth side 1133 are located on opposite sides of the second top 1131 in the width direction of the heat exchanger, the third side 1132 connects the second top 1131 and the second base 1134, the fourth side 1133 connects the second top 1131 and the second base 1134, in the present embodiment, the second fin 113 is located between two adjacent first fins 111, the first relief structure 141 includes the second fin 113 and two first fins 111 located on both sides of the second fin 113, the first side portion 1112 of the first fin 111 and the fifth side portion 1122 of the third fin 112 are displaced in the width direction of the heat exchanger with a third window 1114 formed between the first side portion 1112 and the fifth side portion 1122, the second side portion 1113 of the first fin 111 and the sixth side portion 1123 of the third fin 112 are displaced in the width direction of the heat exchanger with a fourth window 1115 formed between the second side portion 1113 and the sixth side portion 1123, the third side portion 1132 of the second fin 113 and the first side portion 1112 of the first fin 111 are displaced in the width direction of the heat exchanger with a first window 1134 formed between the third side portion 1132 and the first side portion 1112, the fourth side portion 1133 of the second fin 113 and the second side portion 1113 of the first fin 111 are displaced in the width direction of the heat exchanger with a second window 1135 formed between the fourth side portion 1133 and the second side portion 1113, the width of the third window 1114 is greater than the width of the first window 1134 in the length direction of the heat exchanger, the width of fourth window 1115 is greater than the width of second window 1135, the crisscross area of fluid is guaranteed to third window 1114 and fourth window 1115, first tool retracting structure 141 includes second fin 113 and is located two first fins 111 of second fin 113 both sides, guarantee the width of first tool retracting structure 141 in order to realize the effect of moving back the sword, not only be convenient for process, guarantee the stability of rolling process, and first window 1134 and second window 1135 have promoted the crisscross area of fluid, promote heat exchange performance of heat exchanger 10. Of course, the fin plate 1 may also include the second relief structure 142, that is, the second fin 113 is located between two adjacent third fins 112, and the second relief structure 142 includes the second fin 113 and two third fins 112 located on two sides of the second fin 113.

In some embodiments, as shown in fig. 11, the second fins 113 of the adjacent first fin groups are aligned along the width direction of the heat exchanger 10, and of course, the second fins 113 of the adjacent first fin groups may be staggered along the width direction of the heat exchanger 10.

It should be noted that the third fin plate 12 is different from the first fin plate 11 only in the arrangement direction of the first fin group, and other characteristics of the first fin plate 11, such as parameter relationships, etc., all of the third fin plate 12 conforms to the above rules.

In some embodiments, the second heat exchange channel 32 may be provided with fin plates 1 of other structures, as shown in fig. 4, 12 and 13, the second heat exchange channel 32 is provided with a second fin plate 13, the second fin plate 13 includes a plurality of third fin groups arranged in the width direction of the heat exchanger 10, each third fin group includes a plurality of third fin units arranged in the length direction of the heat exchanger 10, each third fin unit includes fifth fins 131 and sixth fins 132 alternately arranged in the length direction of the heat exchanger 10, a seventh fin 133 is arranged between adjacent third fin units, the seventh fin 133 is located between adjacent fifth fins 131 or adjacent sixth fins 132, the seventh fin 133 is a fourth relief structure 144, a fifth window is formed between each fifth fin 131 and each sixth fin 132, a sixth window is formed between each fifth fin 131 and each seventh fin 133 or between each sixth fin 132 and each seventh fin 133, along the length direction of the heat exchanger 10, the width of the seventh fin 133 is greater than that of the fifth fin 131, the width of the seventh fin 133 is greater than that of the sixth fin 132, the third fin group of the second fin plate 13 is arranged along the width direction of the heat exchanger 10, the fifth fin 131 and the sixth fin 132 in the third fin group are arranged along the length direction of the heat exchanger 10, because the orientation of the fifth window and the sixth window is substantially the same as the flow direction of the fluid in the second heat exchange channel 32, the width of the seventh fin 133 has a small barrier to the fluid, and the influence on the heat exchange effect of the fin plates is small, therefore, by controlling the widths of the seventh fin 133 to be greater than those of the fifth fin 131 and the sixth fin 132, the retracting effect of the fourth retracting structure is ensured, the structure is simple, and the processing is facilitated.

The heat exchanger provided by the present invention has been described in detail above. The principles and embodiments of the present invention are explained herein using specific examples, which are presented only to assist in understanding the core concepts of the present invention. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.

Claims

1. A fin plate comprising a first relief structure, wherein the first relief structure comprises two first fins and a second fin, the second fin being located between the two first fins, the first fins comprising a first base portion, a first top portion, a first side portion and a second side portion defining a first direction and a second direction, the first direction being disposed at an angle to the second direction, the first side portion and the second side portion being located on opposite sides of the first top portion along the first direction, the first side portion or the second side portion connecting the first top portion and the first base portion, the second fins comprising a second base portion, a second top portion, a third side portion and a fourth side portion, the third side portion and the fourth side portion being located on opposite sides of the second top portion along the first direction, the third side portion or the fourth side portion connecting the second top portion and the second base portion,

2. The fin plate of claim 1, wherein the first fin is a plurality of the first fins, the fin plate further comprising a plurality of third fins, the third fins comprising a third base, a third top, fifth sides and sixth sides, the fifth sides and the sixth sides being located on opposite sides of the third top in a first direction, the fifth sides or the sixth sides connecting the third top and the third base, at least some of the first fins and the third fins being arranged alternately in a second direction, the first sides of the first fins being offset from the fifth sides of the third fins in the first direction and the first sides and the fifth sides forming third windows therebetween, the second sides of the first fins being offset from the sixth sides of the third fins in the first direction and the second sides and the sixth sides forming fourth windows therebetween, along a first direction, the width of the first window is larger than that of the third window, and the width of the second window is larger than that of the fourth window.

3. The fin plate of claim 2, wherein, in the first direction, the third windows have a width W1, the fourth windows have a width W2, the first windows have a width W3, and the second windows have a width W4, wherein 0.3 ≦ W3/W1 ≦ 0.9, and 0.3 ≦ W4/W2 ≦ 0.9.

4. The fin plate of claim 2, wherein the width of the first window is less than the width of the fourth window, the width of the second window is less than the width of the third window, and the sum of the number of the first and second windows is less than the sum of the number of the third and fourth windows.

5. The fin sheet of claim 4, wherein the sum of the number of the third windows and the fourth windows is defined as a1, and the sum of the number of the first windows and the second windows is defined as a2, wherein a2/(a1+ a2) ≦ 0.3.

6. The fin plate according to any one of claims 2 to 5, wherein, in the first direction, the fifth side portion of the third fin and the third side portion of the second fin are located on both sides of the first side portion of the first fin, or the fifth side portion of the third fin and the third side portion of the second fin are located on the same side of the first side portion of the first fin.

7. The fin plate according to claim 6, wherein the fin plate includes a plurality of first fin groups arranged in a first direction, each of the first fin groups includes a plurality of first fin units including a plurality of the first fins and third fins alternately arranged in a second direction, and second fins are provided between adjacent ones of the first fin units, the second fins of adjacent ones of the first fin groups are aligned in the first direction, or the second fins of adjacent ones of the first fin groups are staggered in the first direction.

8. The fin plate of any one of claims 1 to 5, further comprising a second relief structure comprising a second fin and two third fins on either side of the second fin, the first window being located between a fifth side of the third fin and a third side of the second fin, the second window being located between a sixth side of the third fin and a fourth side of the second fin.

9. The fin plate according to any one of claims 2 to 5, wherein the first fin group further comprises a third relief structure, the third relief structure comprises a fourth fin, the fourth fin is located between adjacent first fins or third fins, the first fin, the second fin and the third fin each have a width less than a width of the fourth fin, the fin plate has a first edge and a second edge along the second direction, and the third relief structure is adjacent to the first edge and/or the second edge.

10. A heat exchanger, comprising a plurality of heat exchange plate sheets stacked together and a fin plate located between at least some adjacent heat exchange plate sheets, wherein the fin plate is the fin plate of any one of claims 1 to 9, heat exchange channels are formed between adjacent heat exchange plate sheets, the heat exchange channels include first heat exchange channels and second heat exchange channels that are not communicated with each other, the first heat exchange channels and the second heat exchange channels are alternately arranged along the stacking direction of the heat exchange plate sheets, and the fin plate is located in the first heat exchange channels.

11. The heat exchanger of claim 10, wherein the heat exchange plate sheet has an angular hole communicating with the first heat exchange channel or the second heat exchange channel, the fin plate is provided with a hole or a notch avoiding the angular hole, the fin plate includes a first fin plate and a third fin plate, the first fin plate is located in the first heat exchange channel, the third fin plate is located in the second heat exchange channel, a plurality of first fin groups of the first fin plate are arranged along a length direction of the heat exchanger, and a plurality of first fin groups of the third fin plate are arranged along a width direction of the heat exchanger.

12. The heat exchanger of claim 10, wherein the heat exchanger includes a second fin plate, the second fin plate is positioned in the second heat exchange channel and comprises a plurality of third fin groups which are arranged along the width direction of the heat exchanger, the third fin group comprises a plurality of third fin units which are arranged along the length direction of the heat exchanger, the third fin units comprise fifth fins and sixth fins which are alternately arranged along the width direction of the heat exchanger, a fourth tool retracting structure is arranged between every two adjacent third fin units, the fourth tool retracting structure comprises seventh fins, the seventh fins are positioned between the adjacent fifth fins or the adjacent sixth fins and extend along the length direction of the heat exchanger, the width of the seventh fin is greater than the width of the fifth fin, and the width of the seventh fin is greater than the width of the sixth fin.