Fin and heat exchanger

Abstract

The fin comprises a plurality of first units, each first unit comprises a plurality of first turbulent flow pieces and a first groove, each first turbulent flow piece comprises a first side wall and a second side wall, the first grooves are located between the first side walls and the second side walls, the opening direction of the first grooves is defined as a first direction D1, the first grooves are provided with first openings in the first direction D1, and the first grooves are provided with second openings in the second direction D1. At least part of the sectional area of the first groove is different from the sectional area of the first opening; the structural design of the fins is beneficial to improving the disturbance effect on medium flow, and then the heat exchange effect is improved.

Description

Technical Field

[0001] The present application relates to the field of thermal management technology, and in particular to a fin and a heat exchanger. Background Art

[0002] Fins are usually arranged inside the heat exchanger to enhance heat transfer. Since the direction of the fin openings is the same as the direction of the medium flow, the fins have low flow resistance to the medium and the heat transfer effect is low. Summary of the invention

[0003] The purpose of the present application is to provide a fin and a heat exchanger, wherein the structural design of the fin is conducive to enhancing the turbulence degree of the medium and thus improving the heat exchange effect.

[0004] One embodiment of the present application provides a fin, comprising a plurality of first units, wherein the first units comprise a plurality of first spoilers and a first groove, wherein the first spoiler comprises a first side wall and a second side wall, wherein the first groove is located between the first side wall and the second side wall, wherein the opening direction of the first groove is defined as a first direction, wherein along the first direction, the first groove has a first opening, and wherein along the first direction, at least a portion of the cross-sectional area of ​​the first groove is different from the cross-sectional area at the first opening.

[0005] The present application also provides a heat exchanger, comprising a plurality of heat exchange plates arranged in a stacked manner, wherein the fins as described above are arranged between the heat exchange plates, and the fins are fixedly connected to the heat exchange plates.

[0006] In the above technical solution, the medium flows into the first groove through the first opening. When passing through the first groove having a cross-sectional area different from that of the first opening, the flow velocity of the medium changes due to the change in the cross-sectional area. The flow velocity of the part of the medium flowing into the first groove is different from the flow velocity of the medium outside the first groove, thereby enhancing the turbulence degree of the medium and thus enhancing the heat exchange effect of the fin. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] Figure 1 is a cross-sectional schematic diagram of an implementation mode of the heat exchanger of the present application;

[0008] Figure 2 yes Figure 1 A partial enlarged view of the middle A;

[0009] Figure 3 It is a structural schematic diagram of an implementation mode of the fin of the present application;

[0010] Figure 4 yes Figure 3 Schematic diagram of the structure of the medium BB;

[0011] Figure 5 is a structural schematic diagram of a second embodiment of the fin of the present application;

[0012] Figure 6 yes Figure 5 Schematic diagram of the structure of CC;

[0013] Figure 7 yes Figure 6 A schematic diagram of a structure in which a plurality of first units are connected;

[0014] Figure 8 is a structural schematic diagram of a first biasing implementation mode of the first unit of the present application;

[0015] Fig. 9 is a structural schematic diagram of a second biasing implementation mode of the first unit of the present application;

[0016] Fig.10 yes Fig. 9 A schematic structural diagram of the first spoiler, the second spoiler and the first unit;

[0017] Fig.11 is a structural schematic diagram of a third embodiment of the fin of the present application;

[0018] Fig.12 is a structural schematic diagram of a fourth embodiment of the fin of the present application;

[0019] Fig.13 This application Fig. 9 Schematic diagram of the structure of EE;

[0020] Fig.14 This application Figure 8 Schematic diagram of the structure of DD.

[0021] Description of reference numerals:

[0022] Heat exchange plate 1; medium channel 2; fin 3; first unit 31; first spoiler 311; second spoiler 312; connecting piece 313; first groove 3111; first opening 3112; second opening 3113; first side wall 3114; second side wall 3115; second groove 3117; third opening 3118; third side wall 3121; fourth side wall 3122; top wall 3116; first edge 3120; second edge 3130; first direction D1; groove portion 32; wall portion 33. DETAILED DESCRIPTION

[0023] Specific embodiments are now 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 accompanying drawings and described herein are only exemplary and should not be considered as limiting.

[0024] Please refer to Figure 1 , Figure 1A cross-sectional schematic diagram of a heat exchanger in an embodiment provided in the present application; Figure 2 for Figure 1 A partial enlarged view of point A in the middle.

[0025] The embodiment of the present application provides a heat exchanger, which includes a plurality of heat exchange plates 1 arranged in a stacked manner, a medium channel 2 is formed between adjacent heat exchange plates 1, a fin 3 is arranged in the medium channel 2 on one side of the heat exchange plate 1, and the fin 3 is welded and fixed to the heat exchange plate 1, and the fin 3 hinders the medium to increase the turbulence of the medium. In this solution, the first direction D1 is the same as the flow direction of the medium in the heat exchanger, and the first unit 31 is used for the fluid to flow in a direction perpendicular to it. Of course, the angle between the first direction D1 and the flow direction of the medium in the heat exchanger can also be set to be greater than 0°. In other embodiments, the heat exchanger includes a plurality of heat exchange plates 1, a medium channel 2 is formed between two heat exchange plates 1, the medium channels 2 are arranged at intervals, and fins 3 are arranged between the medium channels 2, and the first direction D1 is perpendicular to the flow direction of the medium in the medium channel 2.

[0026] This article focuses on improving the structure of the fin 3, which is described in detail with reference to the accompanying drawings.

[0027] Embodiment 1

[0028] like Figure 3 , Figure 4 , Fig.11The first embodiment shown in the figure specifically discloses a fin 3, including a first unit 31, wherein the first unit 31 includes a plurality of first spoilers 311 and a first groove 3111, wherein the first spoiler 311 disturbs the medium to increase the turbulence degree of the medium, increase the flow distance of the medium, and thereby increase the heat exchange effect of the medium, wherein the first spoiler 311 includes a first side wall 3114 and a second side wall 3115, wherein the first side wall 3114 and the second side wall 3115 divide the medium and increase the contact area between the medium and the fin 3, thereby increasing the heat exchange effect, wherein the first groove 3111 is located between the first side wall 3114 and the second side wall 3115, wherein the opening direction of the first groove 3111 is defined as a first direction D1, wherein along the first direction D1, the first groove 3111 has a first opening 3112, and the medium flows into the fin 3 through the first opening 3112 The first groove 3111, along the first direction D1, at least part of the cross-sectional area of ​​the first groove 3111 is different from the cross-sectional area at the first opening 3112. It should be noted that the difference described here can be that at least part of the cross-sectional area of ​​the first groove 3111 is larger than the cross-sectional area at the first opening 3112. Due to the increase in cross-sectional area, the flow rate of the medium is reduced. It can also be that at least part of the cross-sectional area of ​​the first groove 3111 is smaller than the cross-sectional area at the first opening 3112. Due to the decrease in cross-sectional area, the flow rate of the medium is increased. Therefore, when the medium passes through the first groove 3111 area with a different cross-sectional area from the first opening 3112, the flow rate of the medium changes due to the change in cross-sectional area, and the flow rate of the medium flowing into the first groove 3111 is different from the flow rate of the medium outside the first groove 3111, thereby enhancing the turbulence degree of the medium and thereby enhancing the heat exchange effect of the fin 3.

[0029] In the present application, the first side wall 3114 and the second side wall 3115 are flat plates to reduce the manufacturing difficulty when the fin 3 is formed. Of course, in other embodiments, they can also be set as curved plates.

[0030] Embodiment 2

[0031] Please refer to Figure 5-Figure 7The second embodiment shown in the figure is based on the previous embodiment and specifically discloses that the first unit 31 includes a second spoiler 312, the second spoiler 312 spoils the medium to increase the turbulence of the medium, increases the flow distance of the medium, and thus increases the heat exchange effect of the medium, the second spoiler 312 includes a third side wall 3121 and a fourth side wall 3122, the third side wall 3121 and the fourth side wall 3122, the four side walls divide the medium to facilitate heat exchange, and increase the contact area between the medium and the fin 3, thereby increasing the heat exchange effect, the third side wall 312 1 and the fourth side wall 3122 are arranged with the first groove 3111. Along the first direction D1, at least part of the cross-sectional area of ​​the first groove 3111 of the second spoiler 312 is different from the cross-sectional area at the first opening 3112. When passing through the first groove 3111 region having a cross-sectional area different from that at the first opening 3112, the flow velocity of the medium changes due to the change in the cross-sectional area. The flow velocity of the medium flowing into the first groove 3111 is different from the flow velocity of the medium outside the first groove 3111, thereby enhancing the turbulence degree of the medium and further enhancing the heat exchange effect of the fin 3.

[0032] Furthermore, the first spoiler 311 and the second spoiler 312 are alternately arranged, and along the first direction D1, the cross-sectional area of ​​the first groove 3111 located between the first side wall 3114 and the second side wall 3115 gradually decreases, and the medium flow rate of the first groove 3111 between the first side wall 3114 and the second side wall 3115 increases, and the cross-sectional area of ​​the first groove 3111 located between the third side wall 3121 and the fourth side wall 3122 gradually increases, and the medium flow rate of the first groove 3111 between the third side wall 3121 and the fourth side wall 3122 decreases. Since the first spoiler 311 and the second spoiler 312 are alternately arranged, the flow rate difference between the fluids is further increased, thereby further enhancing the heat exchange effect of the fin 3.

[0033] In this solution, the first spoiler 311 and the second spoiler 312 are arranged alternately. Of course, it can also be arranged as follows. Fig.12 As shown, a plurality of first spoilers 311 and a plurality of second spoilers 312 are respectively located at two sides of the first unit 31 , wherein one first spoiler 311 and one second spoiler 312 are arranged adjacent to each other.

[0034] The plurality of first units 31 are arranged along the first direction D1. The medium changes its flow velocity multiple times when passing through the plurality of first units 31, further increasing the turbulence of the fluid, thereby improving the heat exchange effect.

[0035] The first unit 31 includes a connecting piece 313, the first spoiler 311 and the second spoiler 312 both include a top wall 3116, the top wall 3116 is located outside the first groove 3111, the connecting piece 313 is located outside the second groove 3117, one side of the first side wall 3114 is connected to the fourth side wall 3122 through a connecting piece 313, and the other side of the first side wall 3114 is connected to the second side wall 3115 through the top wall 3116 of the first spoiler 311. The second side wall 3115 is connected to the third side wall 3121 through another connecting piece 313, and the third side wall 3121 and the fourth side wall 3122 are connected through the top wall 3116 of the second spoiler 312, connecting the alternately arranged first spoilers 311 and second spoilers 312, and along the first direction D1, the top wall 3116 of the second spoiler 312 is connected to the top wall 3116 of the first spoiler 311 of the adjacent first unit 31, connecting the adjacent first units.

[0036] Embodiment 3

[0037] Please refer to Figure 5-Figure 7 The third embodiment shown in the figure is based on the previous embodiment and specifically discloses that along the first direction D1, the cross section of the first opening 3112 between the first side wall 3114 and the second side wall 3115 is larger than the cross section of the first opening 3112 between the third side wall 3121 and the fourth side wall 3122, so that more medium flows into the first groove 3111 between the first side wall 3114 and the second side wall 3115, and the medium flows between the first side wall 3114 and the second side wall 3115. When the flow velocity is reduced in the first groove 3111, the flow rate of the medium is large, and the effect of reducing the flow velocity is better. At the same time, less medium flows into the first groove 3111 located between the third side wall 3121 and the fourth side wall 3122. When the flow velocity is increased in the first groove 3111 located between the third side wall 3121 and the fourth side wall 3122, the flow rate of the medium is small, and the effect of increasing the flow velocity is better, which further increases the flow velocity difference between the medium inside and outside the first groove 3111, further improves the turbulence degree of the medium, and thereby enhances the heat exchange effect of the fin.

[0038] Embodiment 4

[0039] Please refer to Figure 8 , Fig. 9 , Fig.13 , Fig.14The fourth embodiment shown is based on the previous embodiment and specifically discloses that along the direction in which the first spoiler 311 and the second spoiler 312 are arranged, one of the first units 31 is offset relative to the adjacent first unit 31, the first unit 31 includes a second groove 3117, the second groove 3117 is distributed between the second side wall 3115 and the third side wall 3121, and between the first side wall 3114 and the fourth side wall 3122, a part of the medium flows into the first groove 3111, and another part of the medium flows into the second groove 3117, the medium is divided into a plurality of parts, the contact area between the medium and the fin is increased, and thus the heat exchange effect is increased, along the first direction D1, the first groove 3111 has a second opening 3113, and the medium enters through the first opening 3112 The medium flows into the first groove 3111 and then flows out of the first groove 3111 through the second opening 3113. Along the first direction D1, the first opening 3112 is at least partially misaligned with the second opening 3113 of the adjacent first unit 31. Along the first direction D1, part of the medium flowing out from the second opening 3113 of the adjacent first unit 31 flows into the first groove 3111 of the next adjacent first unit 31, and the other part flows into the second groove 3117 of the next adjacent first unit 31. After being accelerated or decelerated, the flow velocity of the medium flowing into the first groove 3111 is different from the flow velocity of the medium entering the second groove 3117, that is, the medium after speed change in one first unit 31 is divided into two parts with different flow velocities after entering the next first unit 31, which further enhances the turbulence degree of the medium and thus improves the heat exchange effect.

[0040] Embodiment 5

[0041] Please refer to Figure 8 , Fig. 9 , Fig.13 , Fig.14 The fifth embodiment shown is based on the previous embodiment and specifically discloses that the second groove 3117 has a third opening 3118, and the third opening 3118 partially overlaps with the first opening 3112 of the first unit 31 adjacent to the other side. After entering the next first unit 31, a part of the medium flowing out of the second groove 3117 in a first unit 31 enters the first groove 3111 of the next first unit 31 to adjust the flow rate, and the other part enters the second groove 3117 of the next first unit 31. The flow rate of the medium entering the first groove 3111 of the next first unit 31 is changed, and the medium entering the second groove 3117 of the next first unit 31 is divided into two parts with different flow rates, thereby further enhancing the turbulence degree of the medium, thereby improving the heat exchange effect, and improving the problem of the straight flow channel along the first direction D1 affecting the heat exchange effect.

[0042] Embodiment 6

[0043] Please refer to Figure 6 , Figure 7 , Fig.13 , Fig.14 The sixth embodiment shown in the figure is based on the previous embodiment and specifically discloses that along the height direction of the fin, the straight-line distance between the first side wall 3114 and the second side wall 3115 of the first spoiler 311 gradually decreases, and the straight-line distance between the third side wall 3121 and the fourth side wall 3122 gradually decreases. During the fin processing, after the mold moves to process the first spoiler 311 and the second spoiler 312, due to the distance between the first side wall 3114 and the second side wall 3115 along the height direction of the fin, 15 gradually decreases, and the straight-line distance between the third side wall 3121 and the fourth side wall 3122 gradually decreases, which facilitates the withdrawal of the stamping parts during stamping and reduces the probability of the stamping parts squeezing the first side wall 3114, the second side wall 3115, the third side wall 3121 and the fourth side wall 3122 during withdrawal, thereby improving the molding quality of the first spoiler 311 and the second spoiler 312, thereby improving the heat exchange effect, and increasing the service life of the first spoiler 311 and the second spoiler 312.

[0044] Embodiment 7

[0045] Please refer to Fig. 9 and Fig.10 The seventh embodiment shown is based on the above embodiments and specifically discloses that along the first direction D1, the cross-section of the fin has a groove portion 32 and a wall portion 33, the groove portion 32 is the cross-section of the first groove 3111 or the second groove 3117 along the first direction D1, and the wall portion 33 is the cross-section of the first side wall 3114 or the second side wall 3115 or the third side wall 3121 or the fourth side wall 3122 along the first direction D1, that is, there is no straight flow channel along the first direction D1, and when the medium flows from one end of the fin 3 to the other end, the flow direction is changed through the first side wall 3114 or the second side wall 3115 or the third side wall 3121 or the fourth side wall 3122, thereby enhancing the flow path of the medium and strengthening the heat exchange effect.

[0046] Furthermore, in this solution, the first spoiler 311 has an appearance of a trapezoid placed upright along the first direction D1, and the second spoiler 312 has an appearance of an inverted trapezoid, which reduces the difficulty of processing and can be formed by rolling or stamping.

[0047] Further, in the present application, the first spoiler 311 of the first unit 31 is connected to the second spoiler 312 of the adjacent first unit 31, the second spoiler 312 of the first unit 31 is connected to the first spoiler 311 of the adjacent first unit 31, the length of the first side 3120 of the first spoiler 311 and the second side 3130 of the second spoiler 312 is L1, the length of the second side 3130 of the first spoiler 311 and the first side 3120 of the second spoiler 312 is L2, L1=2L2, the offset distance of the first unit 31 relative to the adjacent first unit 31 is L3, L3=L2, the spacing between the first spoiler 311 and the second spoiler 312 in the same first unit 31 is less than L2, and a portion of the medium flowing out of the first groove 3111 will The medium flows into the first groove 3111 of the next first unit 31, and the other part of the medium flows into between the first side wall 3114 and the second side wall 3115 of the next first unit 31. It should be noted that the first side wall 3114 and the second side wall 3115 mentioned here belong to different first spoilers 311 and second spoilers 312, and a part of the medium flowing out from between the first side wall 3114 and the second side wall 3115 of the first unit 31 flows into the first groove 3111 of the next first unit 31, and the other part of the medium flows into between the first side wall 3114 and the second side wall 3115 of the next first unit 31. There is no straight flow channel from one end to the other end of the fin 3 along the first direction D1, which increases the flow path length of the medium, increases the turbulence degree of the medium, and improves the heat exchange effect.

[0048] It should be noted that the fins and heat exchangers provided by the present application are described in detail above. Specific examples are used herein to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the core idea of ​​the present application. It should be pointed out that for ordinary technicians in this technical field, without departing from the principles of the present application, several improvements and modifications can be made to the present application, and these improvements and modifications also fall within the scope of protection of the claims of the present application.

Claims

1. A fin (3), characterized in that: The invention comprises a plurality of first units (31), wherein the first units (31) comprise a plurality of first spoilers (311) and a first groove (3111), wherein the first spoiler (311) comprises a first side wall (3114) and a second side wall (3115), wherein the first groove (3111) is located between the first side wall (3114) and the second side wall (3115), wherein the opening direction of the first groove (3111) is defined as a first direction (D1), wherein along the first direction (D1), the first groove (3111) has a first opening (3112), and wherein along the first direction (D1), at least part of the cross-sectional area of ​​the first groove (3111) is different from the cross-sectional area at the first opening (3112).

2. The fin (3) according to claim 1, characterized in that: The first unit (31) comprises a second spoiler (312), the second spoiler (312) comprises a third side wall (3121) and a fourth side wall (3122), the first groove (3111) is arranged between the third side wall (3121) and the fourth side wall (3122), and along the first direction (D1), at least part of the cross-sectional area of ​​the first groove (3111) of the second spoiler (312) is different from the cross-sectional area at the first opening (3112).

3. The fin (3) according to claim 2, characterized in that: The first spoiler (311) and the second spoiler (312) are arranged alternately, and along the first direction (D1), the cross-sectional area of ​​the first groove (3111) located between the first side wall (3114) and the second side wall (3115) gradually decreases, and the cross-sectional area of ​​the first groove (3111) located between the third side wall (3121) and the fourth side wall (3122) gradually increases, and along the first direction (D1), the cross-sectional area of ​​the first opening (3112) located between the first side wall (3114) and the second side wall (3115) is larger than the cross-sectional area of ​​the first opening (3112) located between the third side wall (3121) and the fourth side wall (3122).

4. The fin (3) according to claim 2 or 3, characterized in that: A plurality of first units (31) are arranged along the first direction (D1); the first side wall (3114), the second side wall (3115), the third side wall (3121), and the fourth side wall (3122) are flat plates; along the direction in which the first spoiler (311) and the second spoiler (312) are arranged, one first unit (31) is offset relative to an adjacent first unit (31); along the first direction (D1), the first groove (3111) has a second opening (3113); along the first direction (D1), the first opening (3112) is at least partially offset from the second opening (3113) of the adjacent first unit (31).

5. The fin (3) according to claim 4, characterized in that: The first unit (31) includes a second groove (3117), and the second groove (3117) is distributed between the second side wall (3115) and the third side wall (3121), and between the first side wall (3114) and the fourth side wall (3122). Along the first direction (D1), the second groove (3117) has a third opening (3118), and the third opening (3118) partially overlaps with the first opening of the adjacent first unit (31).

6. The fin (3) according to claim 5, characterized in that: The first unit (31) comprises a connecting piece (313), the first spoiler (311) and the second spoiler (312) both comprise a top wall (3116), one side of the first side wall (3114) is connected to the fourth side wall (3122) via one of the connecting pieces (313), the other side of the first side wall (3114) is connected to the second side wall (3115) via the top wall (3116) of the first spoiler (311), the second side wall (3115) is connected to the third side wall (3121) via another of the connecting pieces (313), and the third side wall (3121) and the fourth side wall (3122) are connected via the top wall (3116) of the second spoiler (312); Along the first direction (D1), the top wall (3116) of the second spoiler (312) is connected to the top wall (3116) of the first spoiler (311) of the adjacent first unit (31).

7. The fin (3) according to claim 6, characterized in that: Along the first direction (D1), the cross-section of the fin (3) has a groove portion (32) and a wall portion (33), the groove portion (32) is a cross-section of the first groove (3111) or the second groove (3117) along the first direction (D1), and the wall portion (33) is a cross-section of the first side wall (3114) or the second side wall (3115) or the third side wall (3121) or the fourth side wall (3122) along the first direction (D1).

8. The fin (3) according to any one of claims 2 to 7, characterized in that: Along the height direction of the fin (3), the straight-line distance between the first side wall (3114) and the second side wall (3115) of the first spoiler (311) gradually decreases, and the straight-line distance between the third side wall (3121) and the fourth side wall (3122) gradually decreases.

9. A heat exchanger, characterized in that: It comprises a plurality of heat exchange plates (1) arranged in a stacked manner, wherein fins (3) according to any one of claims 1 to 8 are arranged between the heat exchange plates (1), and the fins (3) are fixedly connected to the heat exchange plates (1).

10. The heat exchanger according to claim 9, characterized in that A medium channel (2) is formed between adjacent heat exchange plates (1), the fins (3) are arranged in the medium channel (2), and the first direction (D1) is the same as the flow direction of the medium in the medium channel (2).

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