Fins, heat exchangers and refrigeration systems

Abstract

The present disclosure provides a fin, a heat exchanger and a refrigeration system, belonging to the field of heat exchange technology. The fin includes a base plate and at least two bridge plates of different heights, the bridge plates are located on the plate surface of the base plate, a plurality of spaced-apart tube holes are arranged on the plate surface of the base plate, and the bridge plates are arranged between two adjacent tube holes; the bridge surface of the bridge plate away from the base plate forms an acute angle with the plate surface of the base plate, and the angle between the bridge surface of the bridge plate and the plate surface of the base plate is positively correlated with the height of the bridge plate. The present disclosure can improve the airflow disturbance effect between the fins and enhance the heat transfer efficiency.

Description

Technical Field

[0001] The present disclosure relates to the field of heat exchange technology, and in particular to a fin, a heat exchanger and a refrigeration system. Background Art

[0002] Fins are metal sheets that increase the heat transfer area of ​​a heat exchanger. The heat exchange between the fins and the airflow is crucial to the heat transfer efficiency of the heat exchanger.

[0003] In the related art, the fin generally includes a base plate and a bridge plate, wherein a plurality of spaced tube holes are arranged on the plate surface of the base plate, and the bridge plate is located between two adjacent tube holes. The base plate is in the shape of a flat plate, and the bridge plate located on the plate surface of the base plate is in the shape of a rectangular block. From the windward side of the fin to the leeward side of the fin, the bridge plates are arranged in sequence.

[0004] However, in the related art, the bridge surface of the bridge piece is parallel to the base surface of the fin, and the bridge surfaces of the bridge pieces on the fin are also parallel to each other to form parallel bridges on the fin. However, the parallel bridges have weak airflow disturbance on the fin, which affects the heat transfer effect. Summary of the invention

[0005] The disclosed embodiment provides a fin, a heat exchanger and a refrigeration system, which can improve the airflow disturbance effect between the fins and enhance the heat transfer efficiency. The technical solution is as follows:

[0006] An embodiment of the present disclosure provides a fin, which includes a base plate and at least two bridge plates of different heights, wherein the bridge plate is located on the plate surface of the base plate, and a plurality of spaced-apart tube holes are provided on the plate surface of the base plate, and each bridge plate is provided between two adjacent tube holes; the bridge surface on the bridge plate away from the base plate forms an acute angle with the plate surface of the base plate, and the angle between the bridge surface of the bridge plate and the plate surface of the base plate is positively correlated with the height of the bridge plate.

[0007] In an implementation of the embodiment of the present disclosure, the angle difference between the bridge decks of the two bridge pieces at different heights is 0° to 40°.

[0008] In another implementation of the embodiment of the present disclosure, the angle between the bridge surface of the bridge piece and the board surface of the base plate is 0° to 60°.

[0009] In another implementation of the embodiment of the present disclosure, the bridge piece includes a leeward bridge and a windward bridge, the bridge deck of the leeward bridge faces the windward side of the fin, and the bridge deck of the windward bridge faces the leeward side of the fin; the bridge piece between two adjacent tube holes includes at least one of the leeward bridge and the windward bridge.

[0010] In another implementation of the embodiment of the present disclosure, the substrate has a first board surface and a second board surface opposite to each other, a portion of the bridge piece is located on the first board surface, and another portion of the bridge piece is located on the second board surface.

[0011] In another implementation of the embodiment of the present disclosure, the bridge piece located on the first board surface and the bridge piece located on the second board surface both include the leeward bridge and the windward bridge; or, the bridge piece located on the first board surface includes one of the leeward bridge and the windward bridge, and the bridge piece located on the second board surface includes the other of the leeward bridge and the windward bridge.

[0012] In another implementation of the embodiment of the present disclosure, the bridge piece is located on the same board surface of the substrate, and a plurality of the wind-resisting bridges are sequentially arranged at intervals on the board surface of the substrate from the windward side to the leeward side.

[0013] In another implementation of the embodiment of the present disclosure, the bridge piece is in the shape of an elongated strip, and the length direction of the bridge piece is perpendicular to the direction from the windward side of the fin to the leeward side of the fin, and from the windward side to the leeward side, a plurality of the bridge pieces are arranged in sequence at intervals; the bridge piece close to the windward side and the bridge piece close to the leeward side both include a first section and a second section that are distributed at intervals.

[0014] An embodiment of the present disclosure provides a heat exchanger, wherein the heat exchanger includes the fins as described above.

[0015] An embodiment of the present disclosure provides a refrigeration system, which includes the heat exchanger as described above.

[0016] The beneficial effects brought by the technical solution provided by the embodiments of the present disclosure include at least:

[0017] The fin provided by the embodiment of the present disclosure includes a base plate and a bridge plate, wherein the bridge plate is located on the plate surface of the base plate, and a plurality of spaced-apart tube holes are provided on the base plate, and the bridge plate is distributed between two adjacent tube holes on the base plate. Among them, the bridge surface on the bridge plate away from the base plate is at an angle less than 90 degrees with the plate surface of the base plate, that is, the bridge surface of the bridge plate and the plate surface of the base plate are arranged obliquely. By setting the bridge surface of the bridge plate obliquely, the heat exchange airflow also has a certain inclination angle when flowing through the bridge plate, so that the airflow flows up and down in a direction perpendicular to the base plate, so as to enhance the airflow disturbance effect on the base plate, make the heat transfer effect of the fin better, and further improve the heat exchange performance of the heat exchanger.

[0018] At the same time, the bridge pieces include at least two bridge pieces of different heights, and the angle between the bridge surface of the bridge piece and the board surface of the substrate is positively correlated with the height of the bridge piece. That is, the higher the height of the bridge piece, the larger the angle between the bridge surface of the bridge piece and the board surface of the substrate. Therefore, there are at least two bridge pieces with different angles between the bridge surface and the board surface on the substrate. In this way, bridge pieces of different heights are used, and the inclination angles of the bridge surfaces of bridge pieces of different heights are different, forming a bridge piece design with a bridge surface with a variable inclination angle, which can form differentiated airflow disturbances in the areas where the bridge surfaces of bridge pieces of different heights are located, further enhancing the airflow disturbance effect on the substrate; it can also avoid the airflow disturbance in the area where the bridge surface of the bridge piece with a lower height is located, which leads to additional airflow resistance and power consumption loss of the fan pressure head, strengthen the airflow disturbance while avoiding large power consumption loss, and improve the heat transfer efficiency of the fins and the heat exchange performance of the heat exchanger. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present disclosure. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0020] Figure 1 It is a structural schematic diagram of a fin provided by the related technology;

[0021] Figure 2 is a schematic structural diagram of a fin provided by an embodiment of the present disclosure;

[0022] Figure 3 yes Figure 2 An AA cross-sectional view is provided;

[0023] Figure 4 is a schematic structural diagram of a fin provided by an embodiment of the present disclosure;

[0024] Figure 5 yes Figure 4 A BB cross-section diagram is provided;

[0025] Figure 6 is a schematic structural diagram of a fin provided by an embodiment of the present disclosure;

[0026] Figure 7 yes Figure 6 A CC cross-section diagram is provided;

[0027] Figure 8 is a schematic structural diagram of a fin provided by an embodiment of the present disclosure;

[0028] Fig. 9 yes Figure 8 A DD cross-section diagram is provided.

[0029] The descriptions of the marks in the figure are as follows:

[0030] 1-base plate, 10-tube hole, 11-first plate surface, 12-second plate surface;

[0031] 2-bridge piece, 20-bridge deck, 21-leeward bridge, 22-windward bridge, 23-first section, 24-second section;

[0032] M-windward side, N-leeward side. DETAILED DESCRIPTION

[0033] In order to make the objectives, technical solutions and advantages of the present disclosure more clear, the embodiments of the present disclosure will be further described in detail below with reference to the accompanying drawings.

[0034] Unless otherwise defined, the technical terms or scientific terms used herein shall have the usual meanings understood by persons with ordinary skills in the field to which the present disclosure belongs. The words "first", "second", "third" and similar words used in the patent application specification and claims of the present disclosure do not indicate any order, quantity or importance, but are only used to distinguish different components. Similarly, words such as "one" or "one" do not indicate a quantity limitation, but indicate the existence of at least one. Words such as "include" or "comprise" and similar words mean that the elements or objects appearing before "include" or "comprise" include the elements or objects listed after "include" or "comprise" and their equivalents, and do not exclude other elements or objects. Words such as "connect" or "connected" and similar words are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right", "top", "bottom" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0035] Figure 1 It is a schematic diagram of the structure of a fin provided by the related technology. Figure 1 As shown, the fin comprises: a base plate and a bridge plate. A plurality of spaced-apart tube holes 10 are arranged on the plate surface of the base plate 1 , and the bridge plate 2 is located between two adjacent tube holes 10 .

[0036] like Figure 1 As shown, the base plate 1 is in the shape of a flat plate, and the bridge pieces 2 located on the plate surface of the base plate 1 are in the shape of rectangular blocks. From the windward side M of the fin to the leeward side N of the fin, the bridge pieces 2 are arranged in sequence.

[0037] In the related art, the bridge surface 20 of each bridge piece 2 is parallel to the plate surface of the substrate 1, and the bridge surfaces 20 of each bridge piece 2 located on the substrate 1 are also parallel to each other, so that parallel bridges are formed on the substrate 1. However, the parallel bridges have weak airflow disturbance on the fins, which affects the heat transfer effect.

[0038] In order to improve the airflow disturbance effect between fins and enhance the heat transfer efficiency, an embodiment of the present disclosure provides a fin.

[0039] Figure 2 Schematic diagram of the structure of a fin provided by an embodiment of the present disclosure. Figure 2 As shown, the fin includes a base plate 1 and a bridge piece 2. The bridge piece 2 is located on the plate surface of the base plate 1. A plurality of spaced-apart tube holes 10 are arranged on the plate surface of the base plate 1. A bridge piece 2 is arranged between two adjacent tube holes 10.

[0040] Figure 3 yes Figure 2 An AA cross-section diagram is provided. Figure 3 As shown, the bridge surface 20 on the bridge piece 2 away from the base plate 1 forms an acute angle with the board surface of the base plate 1 .

[0041] like Figure 3 As shown, the bridge piece 2 includes at least two different heights, and the angle α between the bridge surface 20 of the bridge piece 2 and the board surface of the base plate 1 is positively correlated with the height H of the bridge piece 2 .

[0042] The bridge deck 20 of the bridge piece 2 is connected to the base plate 1 through two parallel and spaced side walls, so that a through hole is formed between the bridge deck 20 and the board surface of the base plate 1 to allow air flow to pass through.

[0043] The fin provided by the embodiment of the present disclosure includes a substrate 1 and a bridge piece 2, wherein the bridge piece 2 is located on the plate surface of the substrate 1, and a plurality of spaced-apart tube holes 10 are provided on the substrate 1, and the bridge piece 2 is distributed between two adjacent tube holes 10 on the substrate 1. Among them, the bridge deck 20 on the bridge piece 2 away from the substrate 1 is at an angle less than 90 degrees with the plate surface of the substrate 1, that is, the bridge deck 20 of the bridge piece 2 and the plate surface of the substrate 1 are arranged obliquely. By setting the bridge deck 20 of the bridge piece 2 obliquely, the heat exchange airflow also has a certain inclination angle when flowing through the bridge piece 2, so that the airflow flows up and down in a direction perpendicular to the substrate 1, so as to enhance the airflow disturbance effect on the substrate 1, make the heat transfer effect of the fin better, and further improve the heat exchange performance of the heat exchanger.

[0044] At the same time, the bridge pieces 2 include at least two bridge pieces 2 of different heights, and the angle α between the bridge deck 20 of the bridge piece 2 and the board surface of the substrate 1 is positively correlated with the height H of the bridge piece 2. That is, the higher the height H of the bridge piece 2, the larger the angle α between the bridge deck 20 of the bridge piece 2 and the board surface of the substrate 1. Therefore, there are at least two bridge pieces 2 with different angles between the bridge deck 20 and the board surface on the substrate 1. In this way, by using bridge pieces 2 of different heights and making the inclination angles of the bridge deck 20 of the bridge pieces 2 of different heights different, a bridge piece 2 design with a variable inclination angle of the bridge deck 20 is formed, which can form differentiated airflow disturbances in the areas where the bridge deck 20 of the bridge pieces 2 of different heights is located, further enhancing the airflow disturbance effect on the substrate 1; it can also avoid the airflow disturbance in the area where the bridge deck 20 of the bridge piece 2 with a lower height is located, which leads to additional airflow resistance and fan pressure head power consumption loss, strengthen the airflow disturbance while avoiding large power consumption loss, and improve the heat transfer efficiency of the fin and the heat exchange performance of the heat exchanger.

[0045] Alternatively, if Figure 3 As shown, the angle α between the bridge surface 20 of the bridge piece 2 and the board surface of the base plate 1 is 0° to 60°.

[0046] By setting the bridge deck 20 of the bridge piece 2 to be inclined with the plate surface of the substrate 1, and controlling the angle between the bridge deck 20 and the plate surface to be controlled within the angle range, the heat exchange airflow can also maintain a suitable inclination angle when flowing through the bridge piece 2, so that the airflow flows up and down in a direction perpendicular to the substrate 1, so as to enhance the airflow disturbance effect on the substrate 1, make the heat transfer effect of the fin better, and also improve the heat exchange performance of the heat exchanger.

[0047] As an example, in the embodiment of the present disclosure, the angle α between the bridge surface 20 of the bridge piece 2 and the board surface of the base plate 1 is 40°.

[0048] Alternatively, if Figure 3 As shown, the bridge piece 2 includes a leeward bridge 21 and a windward bridge 22, wherein the bridge deck 20 of the leeward bridge 21 (the side of the bridge piece 2 away from the substrate 1) faces the windward side M of the fin, and the bridge deck 20 of the windward bridge 22 faces the leeward side N of the fin.

[0049] The bridge piece 2 between two adjacent tube holes 10 includes at least one of a leeward bridge 21 and a windward bridge 22. That is, the substrate 1 can be provided with either the leeward bridge 21 or the windward bridge 22, or both of the leeward bridge 21 and the windward bridge 22.

[0050] For example, Figure 3 As shown, in the fin, two adjacent tube holes 10 are provided with a leeward bridge 21 and a windward bridge 22 at the same time.

[0051] Among them, the inclined bridge deck 20 can change the direction of airflow and increase the local diversion velocity of airflow in the direction perpendicular to the substrate 1, which is beneficial to disrupt the flow layer of airflow on the fin surface, enhance the disturbing effect on the airflow, and make the heat exchanger have better heat exchange performance.

[0052] Alternatively, if Figure 3 As shown, the substrate 1 has a first plate surface 11 and a second plate surface 12 opposite to each other, a portion of the bridge piece 2 is located on the first plate surface 11 , and another portion of the bridge piece 2 is located on the second plate surface 12 .

[0053] By providing bridge pieces 2 on the first plate surface 11 and the second plate surface 12 opposite to each other on the substrate 1, the airflow disturbance effect on both sides of the substrate 1 can be improved at the same time, so that the heat transfer effect of the fins is better and the heat exchange performance of the heat exchanger is further improved.

[0054] In the disclosed embodiment, the bridge piece 2 on the first board surface 11 and the bridge piece 2 on the second board surface 12 both include a windward bridge 22 and a leeward bridge 21. That is, the windward bridge 22 and the leeward bridge 21 are provided on both the first board surface 11 and the second board surface 12.

[0055] For example, Figure 3 As shown, on the first board surface 11, three bridge pieces 2 are sequentially arranged from the windward side M to the leeward side N, and the three bridge pieces 2 are respectively a leeward bridge 21, a parallel bridge and a windward bridge 22. On the second board surface 12, two bridge pieces 2 are sequentially arranged from the windward side M to the leeward side N, and the two bridge pieces 2 are respectively a leeward bridge 21 and a windward bridge 22.

[0056] In addition, since the above-mentioned turbulence effect can be achieved on the side of the bridge deck 20 facing the substrate 1 and the side facing away from the substrate 1 after the fins are stacked and assembled, when the leeward bridge 21 and the windward bridge 22 are simultaneously arranged on the substrate 1, there is no requirement for the wind direction of the heat exchanger, that is, the airflow flows from the windward side M to the leeward side N, or the airflow flows from the leeward side N to the windward side M, both of which can achieve the purpose of improving the heat exchange effect and are convenient to use.

[0057] like Figure 3 As shown, the height of the bridge piece 2 located on the first board surface 11 is less than the height of the bridge piece 2 located on the second board surface 12. That is, the angle between the bridge surface 20 of the bridge piece 2 on the first board surface 11 and the first board surface 11 is less than the angle between the bridge piece 2 on the second board surface 12 and the second board surface 12.

[0058] In this way, two bridge pieces 2 of different heights are arranged on the substrate 1, and the inclination angles of the bridge decks 20 of the two bridge pieces 2 of different heights are different, forming a bridge piece 2 design with a variable inclination angle of the bridge deck 20. After the fins are superimposed, differentiated airflow disturbances can be formed on both sides of the substrate 1, further enhancing the airflow disturbance effect on the substrate 1.

[0059] Optionally, the bridge pieces 2 on the first board surface 11 include at least one of windward bridges 22 and leeward bridges 21 , and the bridge pieces 2 on the second board surface 12 include at least one of windward bridges 22 and leeward bridges 21 .

[0060] For example, Figure 4 is a schematic diagram of the structure of a fin provided by an embodiment of the present disclosure, Figure 5 yes Figure 4 A BB cross-section diagram is provided. Figure 4 , 5 As shown, on the first board surface 11, three bridge pieces 2 are sequentially arranged from the windward side M to the leeward side N, and the three bridge pieces 2 are all windward bridges 22. On the second board surface 12, two bridge pieces 2 are sequentially arranged from the windward side M to the leeward side N, and the two bridge pieces 2 are all leeward bridges 21.

[0061] In the above implementation, by simultaneously arranging the windward bridge 22 and the leeward bridge 21 on the substrate 1, the airflow flows from the windward side M to the leeward side N, or the airflow flows from the leeward side N to the windward side M, both of which can achieve the purpose of improving the heat exchange effect and are convenient to use.

[0062] like Figure 5 As shown, the height of the bridge piece 2 located on the first board surface 11 is less than the height of the bridge piece 2 located on the second board surface 12. That is, the angle between the bridge surface 20 of the bridge piece 2 on the first board surface 11 and the first board surface 11 is less than the angle between the bridge piece 2 on the second board surface 12 and the second board surface 12.

[0063] In this way, two bridge pieces 2 of different heights are arranged on the substrate 1, and the inclination angles of the bridge decks 20 of the two bridge pieces 2 of different heights are different, forming a bridge piece 2 design with a variable inclination angle of the bridge deck 20, which can form differentiated airflow disturbances on both sides of the substrate 1, further enhancing the airflow disturbance effect on the substrate 1.

[0064] For example, Figure 6 is a schematic diagram of the structure of a fin provided by an embodiment of the present disclosure, Figure 7 yes Figure 6 A CC cross-section diagram is provided. Figure 6 , 7 As shown, on the first board surface 11, five bridge pieces 2 are sequentially arranged from the windward side M to the leeward side N, and the five bridge pieces 2 are all windward bridges 22. On the second board surface 12, four bridge pieces 2 are sequentially arranged from the windward side M to the leeward side N, and the four bridge pieces 2 are all leeward bridges 21.

[0065] In the above implementation, by simultaneously arranging the windward bridge 22 and the leeward bridge 21 on the substrate 1, the airflow flows from the windward side M to the leeward side N, or the airflow flows from the leeward side N to the windward side M, both of which can achieve the purpose of improving the heat exchange effect and are convenient to use.

[0066] and Figure 5 Compared to the fins shown, Figure 7 The bridge pieces 2 on the schematic fins are arranged more densely, so that the airflow disturbance effect on the substrate 1 can be further enhanced by arranging more bridge pieces 2.

[0067] As Figure 7 As shown, there are two bridge pieces 2 of different heights on the first board surface 11, and from the windward side M to the leeward side N, the five bridge pieces 2 are respectively a bridge piece 2 of lower height, a bridge piece 2 of higher height, a bridge piece 2 of lower height, a bridge piece 2 of higher height, and a bridge piece 2 of lower height. Moreover, the inclination angles of the bridge decks 20 of the bridge pieces 2 of different heights are different, so that a bridge piece 2 design with a variable inclination angle of the bridge deck 20 is formed on the first board surface 11, which can form continuous differentiated airflow disturbances on the first board surface 11, and further enhance the airflow disturbance effect on the substrate 1.

[0068] like Figure 7 As shown, there are two bridge pieces 2 of different heights on the second board surface 12, and from the windward side M to the leeward side N, the four bridge pieces 2 are respectively a bridge piece 2 with a higher height, a bridge piece 2 with a lower height, a bridge piece 2 with a higher height, and a bridge piece 2 with a lower height. Moreover, the inclination angles of the bridge decks 20 of the bridge pieces 2 of different heights are different, so that a bridge piece 2 design with a variable inclination angle of the bridge deck 20 is formed on the second board surface 12, which can form a continuous differentiated airflow disturbance on the second board surface 12, and further enhance the airflow disturbance effect on the base plate 1.

[0069] Optionally, the bridge pieces 2 are located on the same board surface of the base plate 1 , and a plurality of wind-resisting bridges 22 are sequentially arranged on the board surface of the base plate 1 from the windward side M to the leeward side N.

[0070] For example, Figure 8 is a schematic diagram of the structure of a fin provided by an embodiment of the present disclosure, Fig. 9 yes Figure 8 A DD cross-section diagram is provided. Figure 8 , 9 As shown, on the first board surface 11 , five bridge pieces 2 are sequentially arranged at intervals from the windward side M to the leeward side N, and the five bridge pieces 2 are all wind-resistant bridges 22 .

[0071] In the above implementation, by simultaneously providing the wind bridge 22 on the substrate 1, it is beneficial to disturb the airflow when it flows from the windward side M to the leeward side N, thereby achieving the purpose of improving the heat exchange effect and facilitating use.

[0072] like Fig. 9As shown, there are two bridge pieces 2 of different heights on the first board surface 11, and from the windward side M to the leeward side N, the five bridge pieces 2 are respectively a bridge piece 2 of lower height, a bridge piece 2 of higher height, a bridge piece 2 of lower height, a bridge piece 2 of higher height, and a bridge piece 2 of lower height. Moreover, the inclination angles of the bridge decks 20 of the bridge pieces 2 of different heights are different, so that a bridge piece 2 design with a variable inclination angle of the bridge deck 20 is formed on the first board surface 11, which can form continuous differentiated airflow disturbances on the first board surface 11, and further enhance the airflow disturbance effect on the substrate 1.

[0073] It should be noted that in some other implementations, the bridge piece 2 is located on the same board surface of the substrate 1. From the windward side M to the leeward side N, in addition to the windward bridge 22, a leeward bridge 21 can also be set on the board surface of the substrate 1. By simultaneously arranging the windward bridge 22 and the leeward bridge 21 on the substrate 1, the airflow flows from the windward side M to the leeward side N, or the airflow flows from the leeward side N to the windward side M, both of which can achieve the purpose of improving the heat exchange effect and are convenient to use.

[0074] Alternatively, if Figure 3 , 5 As shown in , 7 and 9, the angle difference between the bridge decks 20 of two bridge pieces 2 at different heights is 0° to 40°. By using bridge pieces 2 of different heights, and the bridge decks 20 of bridge pieces 2 of different heights have different inclination angles, a bridge piece 2 design with a variable inclination angle of the bridge deck 20 can be formed, which can form differentiated airflow disturbances in the areas where the bridge decks 20 of bridge pieces 2 of different heights are located, and further enhance the airflow disturbance effect on the substrate 1. At the same time, by setting the angle difference between the bridge decks 20 of bridge pieces 2 of different heights within the angle range, it is possible to avoid excessive changes in the inclination angle of the bridge deck 20 of the bridge piece 2, which causes airflow disturbances, so that the heat transfer effect of the fin is better, and the heat exchange performance of the heat exchanger is further improved.

[0075] Alternatively, if Figure 2 , 4 As shown in Figures 6 and 8, the bridge piece 2 is in the shape of an elongated strip, and the length direction of the bridge piece 2 is perpendicular to the direction from the windward side M of the fin to the leeward side N of the fin. From the windward side M to the leeward side N, a plurality of bridge pieces 2 are arranged in sequence.

[0076] By arranging a plurality of bridge pieces 2 at intervals in the flow direction of the airflow, fluid disturbance can be increased at the gap positions between the bridge pieces 2, thereby enhancing heat transfer.

[0077] Optionally, any bridge piece in the bridge piece 2 can be split into multiple sections according to actual needs. Exemplarily, the bridge piece 2 can be split into 2 to 5 sections.

[0078] As an example, in the embodiments of the present disclosure, Figure 2 , 4As shown in FIGS. 6 and 8 , the bridge piece 2 close to the windward side M and the bridge piece 2 close to the leeward side N both include a first section 23 and a second section 24 that are spaced apart. That is, the bridge piece 2 is divided into two sections.

[0079] By setting the bridge piece 2 close to the windward side M and the bridge piece 2 close to the leeward side N into two sections, it is ensured that a single bridge is not too long, which is conducive to the airflow passing through the bridge side between the first section 23 and the second section 24 to further enhance the airflow turbulence and enhance the heat exchange efficiency.

[0080] The embodiment of the present disclosure provides a heat exchanger, which includes a heat exchange tube and the fins as described above. There are multiple fins, and the multiple fins are arranged in parallel and spaced apart, and the heat exchange tube is inserted into the tube hole 10 of the base plate 1 of the multiple fins. When exchanging heat, refrigerant is injected into the heat exchange tube, and air is transported from the windward side M to the leeward side N, so that the airflow flows between the fins and exchanges heat with the refrigerant in the heat exchange tube.

[0081] Since the bridge deck 20 of the bridge piece 2 of the fin and the plate surface of the base plate 1 are arranged at an angle, the bridge deck 20 of the bridge piece 2 is arranged at an angle, so that the airflow for heat exchange is at a certain inclination angle, and the airflow flows up and down in a direction perpendicular to the base plate 1, so as to enhance the airflow disturbance effect on the base plate 1, make the heat transfer effect of the fin better, and further improve the heat exchange performance of the heat exchanger.

[0082] At the same time, the bridge pieces 2 include at least two bridge pieces 2 of different heights, and the angle between the bridge deck 20 of the bridge piece 2 and the board surface of the substrate 1 is positively correlated with the height of the bridge piece 2. That is, the higher the height of the bridge piece 2, the larger the angle between the bridge deck 20 of the bridge piece 2 and the board surface of the substrate 1. Therefore, there are at least two bridge pieces 2 with different angles between the bridge deck 20 and the board surface on the substrate 1. In this way, by using bridge pieces 2 of different heights and making the inclination angles of the bridge deck 20 of the bridge pieces 2 of different heights different, a bridge piece 2 design with a variable inclination angle of the bridge deck 20 is formed, which can form differentiated airflow disturbances in the areas where the bridge deck 20 of the bridge pieces 2 of different heights is located, further enhancing the airflow disturbance effect on the substrate 1; it can also avoid the airflow disturbance in the area where the bridge deck 20 of the bridge piece 2 with a lower height is located, which causes additional airflow resistance and fan pressure head power consumption loss, strengthens the airflow disturbance while avoiding large power consumption loss, and improves the heat transfer efficiency of the fin and the heat exchange performance of the heat exchanger.

[0083] The embodiment of the present disclosure provides a refrigeration system, which includes the heat exchanger as described above. The heat exchanger includes the fins as described above.

[0084] Since the bridge deck 20 of the bridge piece 2 of the fin and the board surface of the substrate 1 are arranged at an angle. By setting the bridge deck 20 of the bridge piece 2 at an angle, the heat exchange airflow is at a certain inclination angle, and the airflow flows up and down in a direction perpendicular to the substrate 1, so as to enhance the airflow disturbance effect on the substrate 1, make the heat transfer effect of the fin better, and improve the heat exchange performance of the heat exchanger. At the same time, there are at least two bridge pieces 2 with different angles between the bridge deck 20 and the board surface on the substrate 1. In this way, bridge pieces 2 with different heights are used, and the inclination angles of the bridge deck 20 of the bridge pieces 2 with different heights are different, forming a bridge piece 2 design with a variable inclination angle of the bridge deck 20, which can form differentiated airflow disturbances in the areas where the bridge deck 20 of the bridge pieces 2 with different heights is located, further enhancing the airflow disturbance effect on the substrate 1; it can also avoid the airflow disturbance in the area where the bridge deck 20 of the bridge piece 2 with a lower height is located, which leads to additional airflow resistance and fan pressure head power consumption loss, strengthen the airflow disturbance while avoiding large power consumption loss, and improve the heat transfer efficiency of the fin and the heat exchange performance of the heat exchanger.

[0085] The above does not limit the present disclosure in any form. Although the present disclosure has been disclosed as above through the embodiments, it is not used to limit the present disclosure. Any technician familiar with the profession can make some changes or modify the technical contents disclosed above into equivalent embodiments with equivalent changes without departing from the scope of the technical solution of the present disclosure. However, any simple modification, equivalent change and modification made to the above embodiments based on the technical essence of the present disclosure without departing from the content of the technical solution of the present disclosure still falls within the scope of the technical solution of the present disclosure.

Claims

1. A fin, characterized in that: The fin comprises a base plate (1) and at least two bridge plates (2) of different heights, the bridge plates (2) being located on the plate surface of the base plate (1), a plurality of spaced-apart tube holes (10) being provided on the plate surface of the base plate (1), and the bridge plates (2) being provided between two adjacent tube holes (10); The bridge deck (20) on the bridge piece (2) away from the base plate (1) forms an acute angle with the board surface of the base plate (1); the angle (α) between the bridge deck (20) of the bridge piece (2) and the board surface of the base plate (1) is positively correlated with the height (H) of the bridge piece (2); the angle (α) between the bridge deck (20) of the bridge piece (2) and the board surface of the base plate (1) is 0° to 60°; and the angle difference between the bridge decks (20) of two bridge pieces (2) at different heights is 0° to 40°; The bridge piece (2) comprises a leeward bridge (21) and a windward bridge (22), the bridge deck (20) of the leeward bridge (21) faces the windward side (M) of the fin, and the bridge deck (20) of the windward bridge (22) faces the leeward side (N) of the fin; the bridge piece (2) between two adjacent tube holes (10) comprises at least one of the leeward bridge (21) and the windward bridge (22); The bridge piece (2) is in the shape of an elongated strip, and the length direction of the bridge piece (2) is perpendicular to the direction from the windward side (M) of the fin to the leeward side (N) of the fin; the bridge piece (2) close to the windward side (M) and the bridge piece (2) close to the leeward side (N) both comprise a first section (23) and a second section (24) which are spaced apart; The base plate (1) has a first plate surface (11) and a second plate surface (12) opposite to each other, a portion of the bridge piece (2) is located on the first plate surface (11), and another portion of the bridge piece (2) is located on the second plate surface (12); The height of the bridge piece (2) located on the first board surface (11) is less than the height of the bridge piece (2) located on the second board surface (12); or, The first plate surface (11) comprises two bridge pieces (2) of different heights, and from the windward side (M) to the leeward side (N), the bridge pieces (2) of lower height and the bridge pieces (2) of higher height are arranged alternately in sequence; The second plate surface (12) comprises two bridge pieces (2) of different heights, and from the windward side (M) to the leeward side (N), the bridge pieces (2) of higher height and the bridge pieces (2) of lower height are arranged alternately in sequence.

2. A heat exchanger, characterized in that: The heat exchanger comprises the fin according to claim 1.

3. A refrigeration system, characterized in that: The refrigeration system comprises the heat exchanger according to claim 2.

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