CN113834367A - Heat exchange fin and heat exchanger - Google Patents
Heat exchange fin and heat exchanger Download PDFInfo
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- CN113834367A CN113834367A CN202110959462.6A CN202110959462A CN113834367A CN 113834367 A CN113834367 A CN 113834367A CN 202110959462 A CN202110959462 A CN 202110959462A CN 113834367 A CN113834367 A CN 113834367A
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- 230000001965 increasing effect Effects 0.000 claims abstract description 88
- 239000012530 fluid Substances 0.000 claims abstract description 63
- 238000005452 bending Methods 0.000 claims description 18
- 230000001154 acute effect Effects 0.000 claims description 12
- 238000005096 rolling process Methods 0.000 claims description 5
- 230000017525 heat dissipation Effects 0.000 abstract description 11
- 238000010586 diagram Methods 0.000 description 9
- 238000004088 simulation Methods 0.000 description 9
- 238000004519 manufacturing process Methods 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- 238000012986 modification Methods 0.000 description 4
- 230000004048 modification Effects 0.000 description 4
- 238000012545 processing Methods 0.000 description 4
- 238000003466 welding Methods 0.000 description 4
- 230000002708 enhancing effect Effects 0.000 description 3
- 230000000903 blocking effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000012447 hatching Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F3/00—Plate-like or laminated elements; Assemblies of plate-like or laminated elements
- F28F3/02—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations
- F28F3/04—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations the means being integral with the element
- F28F3/042—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations the means being integral with the element in the form of local deformations of the element
- F28F3/046—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations the means being integral with the element in the form of local deformations of the element the deformations being linear, e.g. corrugations
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Abstract
A heat exchange fin and a heat exchanger relate to the technical field of heat dissipation. The heat exchange fin comprises a plurality of first zone structures and a plurality of second zone structures; the plurality of first wave band structures and the plurality of second wave band structures are sequentially and alternately connected along the width direction of the heat exchange fins; the first zone structure comprises a plurality of first zone units; the plurality of first wave band units are sequentially connected along the length direction of the heat exchange fins; the second zone structure comprises a plurality of second zone units; the plurality of second wave band units are sequentially connected along the length direction of the heat exchange fins; the first waveband unit and/or the second waveband unit are increasing waveband units; the incremental band unit is configured to have a tendency for fluid flowing along the length direction of the heat exchange fins to flow along the height direction of the heat exchange fins. The heat exchanger comprises heat exchange fins. The invention aims to provide a heat exchange fin and a heat exchanger, which solve the technical problem of insufficient heat exchange capacity between a heat dissipation fin and fluid in the prior art to a certain extent.
Description
Technical Field
The invention relates to the technical field of heat dissipation, in particular to a heat exchange fin and a heat exchanger.
Background
In the prior art, heat exchangers often employ heat dissipation fins disposed in fluid channels to increase the contact area with fluid and improve the turbulence intensity of fluid, thereby improving heat exchange capability.
Along with the requirement on heat exchange efficiency is higher and higher, the heat exchange capacity between the existing radiating fins and fluid is insufficient, so that the heat exchange efficiency of the heat exchanger is more and more difficult to meet the requirement.
Disclosure of Invention
The invention aims to provide a heat exchange fin and a heat exchanger, which solve the technical problem of insufficient heat exchange capacity between a heat dissipation fin and fluid in the prior art to a certain extent.
In order to achieve the purpose, the invention provides the following technical scheme:
a heat exchange fin comprising a plurality of first zone structures and a plurality of second zone structures; the plurality of first zone structures and the plurality of second zone structures are sequentially and alternately connected along the width direction of the heat exchange fins;
the first zone structure comprises a plurality of first zone units; the plurality of first waveband units are sequentially connected along the length direction of the heat exchange fins; the second zone structure comprises a plurality of second zone units; the second wave band units are sequentially connected along the length direction of the heat exchange fins;
the first zone unit and/or the second zone unit are increasing zone units; the incremental band unit is configured to cause fluid flowing along a length direction of the heat exchange fins to have a tendency to flow along a height direction of the heat exchange fins.
In any of the above technical solutions, optionally, the increasing wave band unit includes an increasing wave top plate, an increasing wave bottom plate, a first wave side plate, and a second wave side plate; the enhanced wave top plate and the enhanced wave bottom plate are respectively connected through the first wave side plate and the second wave side plate;
in two adjacent increasing wave band units, two increasing wave top plates are arranged at intervals and connected with each other;
the first wave side plate and/or the second wave side plate are nonlinear.
In any of the above technical solutions, optionally, in the length direction of the heat exchange fin, the first corrugated side plate is in a zigzag shape or a curve shape, and the second corrugated side plate is in a zigzag shape or a curve shape.
In any of the above technical solutions, optionally, the increasing wave band unit has a wave band unit cavity, and the wave band unit cavity is provided with a cavity opening on the increasing wave base plate; along the length direction of the heat exchange fins, the sum of the length of the enhanced wave top plate and the effective length of the plate surface of the enhanced wave bottom plate is not more than half of the length of the enhanced wave band unit; the effective length of the plate surface of the enhanced wave bottom plate is obtained by subtracting the length of the cavity opening from the length of the enhanced wave bottom plate.
In any of the above technical solutions, optionally, when the first wave-side plate is in a zigzag shape, the first wave-side plate includes a first wave-side top portion and a first wave-side bottom portion; the enhanced wave top plate, the first wave side top, the first wave side bottom and the enhanced wave bottom plate are fixedly connected in sequence; an included angle between the top of the first wave side and the bottom of the first wave side is an obtuse angle;
or when the first wave side plate is in a zigzag shape, the first wave side plate comprises a first wave side top, a first wave side middle part and a first wave side bottom; the enhanced wave top plate, the first wave side top, the first wave side middle part, the first wave side bottom and the enhanced wave bottom plate are fixedly connected in sequence; an included angle between the top of the first wave side and the middle of the first wave side is an acute angle, a right angle or an obtuse angle, and an included angle between the bottom of the first wave side and the middle of the first wave side is an acute angle, a right angle or an obtuse angle;
or when the first wave side plate is in a curve shape, the first wave side plate comprises a first wave side top part and a first wave side bottom part; the enhanced wave top plate, the first wave side top, the first wave side bottom and the enhanced wave bottom plate are fixedly connected in sequence; the bending direction of the top of the first wave side is the same as or opposite to the bending direction of the bottom of the first wave side.
In any of the above technical solutions, optionally, when the second wave-side plate is in a zigzag shape, the second wave-side plate includes a second wave-side top and a second wave-side bottom; the enhanced wave top plate, the second wave side top, the second wave side bottom and the enhanced wave bottom plate are fixedly connected in sequence; an included angle between the top of the second wave side and the bottom of the second wave side is an obtuse angle;
or when the second wave side plate is in a zigzag shape, the second wave side plate comprises a second wave side top, a second wave side middle part and a second wave side bottom; the enhanced wave top plate, the second wave side top, the second wave side middle part, the second wave side bottom and the enhanced wave bottom plate are fixedly connected in sequence; an included angle between the top of the second wave side and the middle of the second wave side is an acute angle, a right angle or an obtuse angle, and an included angle between the bottom of the second wave side and the middle of the second wave side is an acute angle, a right angle or an obtuse angle;
or when the second wave side plate is in a curve shape, the second wave side plate comprises a second wave side top and a second wave side bottom; the enhanced wave top plate, the second wave side top, the second wave side bottom and the enhanced wave bottom plate are fixedly connected in sequence; the bending direction of the second wave side top is the same as or opposite to the bending direction of the second wave side bottom.
In any of the above technical solutions, optionally, the enhanced wave top plate, the enhanced wave bottom plate, the first wave side middle part, and the second wave side middle part are parallel to each other; the height of the first wave side middle part is the same as or different from that of the second wave side middle part;
or the enhanced wave top plate and the enhanced wave bottom plate are parallel to each other, the first wave side middle part and the second wave side middle part respectively form an included angle with the enhanced wave top plate, and the first wave side middle part forms an included angle with the second wave side middle part.
In any of the above technical solutions, optionally, along the height direction of the heat exchange fin, the height of the middle part of the first wave side is the same as or different from the height of the middle part of the second wave side;
and/or the first wave side middle part of the first waveband structure is connected with the first wave side middle part of the adjacent second waveband structure and is positioned on the same plane, and the second wave side middle part of the first waveband structure is connected with the second wave side middle part of the adjacent second waveband structure and is positioned on the same plane.
In any of the above technical solutions, optionally, when the first wave side plate and the second wave side plate are both in a zigzag shape, the first wave side plate formed by the top of the first wave side and the bottom of the first wave side connected to each other has the same bending direction as the second wave side plate formed by the top of the second wave side and the bottom of the second wave side connected to each other; a first wave-side top of the first band structure is parallel to a first wave-side bottom of the second adjacent band structure, a second wave-side bottom of the first band structure is parallel to a second wave-side top of the second adjacent band structure; the increasing wave top plate of the first wave band structure is connected with the adjacent increasing wave top plate of the second wave band structure, and the increasing wave bottom plate of the first wave band structure is connected with the adjacent increasing wave bottom plate of the second wave band structure;
or when the first wave side plate and the second wave side plate are both in a zigzag shape, the first wave band unit is centrosymmetric with the corresponding second wave band unit; the enhanced wave top plate, the enhanced wave bottom plate, the middle part of the first wave side and the middle part of the second wave side are mutually parallel; the first wave side middle part of the first wave band structure is connected with the first wave side middle part of the adjacent second wave band structure and is positioned on the same plane, and the second wave side middle part of the first wave band structure is connected with the second wave side middle part of the adjacent second wave band structure and is positioned on the same plane;
or when the first wave-side plate and the second wave-side plate are both in a zigzag shape, the top of the first wave side of the first wave band structure is parallel to the bottom of the second wave side of the adjacent second wave band structure, and the bottom of the second wave side of the first wave band structure is parallel to the top of the first wave side of the adjacent second wave band structure; the first wave side middle part of the first wave band structure is connected with the first wave side middle part of the adjacent second wave band structure and is positioned on the same plane, and the second wave side middle part of the first wave band structure is connected with the second wave side middle part of the adjacent second wave band structure and is positioned on the same plane.
In any of the above technical solutions, optionally, the incremental wave band unit is of an axisymmetric structure;
or the first zone unit is centrosymmetric with the corresponding second zone unit;
or the first zone unit is axisymmetric with the corresponding second zone unit;
or the heat exchange fins are formed into the first waveband structure and the second waveband structure through stamping or rolling.
A heat exchanger includes heat exchange fins.
The invention has the following beneficial effects:
according to the heat exchange fin and the heat exchanger provided by the invention, the first wave band unit and/or the second wave band unit is/are the increasing wave band unit, and the increasing wave band unit is configured to enable the fluid flowing along the length direction of the heat exchange fin to have the tendency of flowing along the height direction of the heat exchange fin, so that the increasing wave band unit effectively disturbs the flowing direction of the fluid and enables the fluid to flow along the height direction of the heat exchange fin, and thus the fluid forms secondary flow in the height direction of the heat exchange fin, the heat exchange capacity of the heat dissipation fin and the fluid can be effectively improved, and the heat exchange efficiency of the heat exchanger is improved to a certain extent.
In order to make the aforementioned and other objects, features and advantages of the present application more comprehensible, preferred embodiments accompanied with figures are described in detail below.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
FIG. 1-1 is a schematic structural view of a conventional heat exchange fin;
1-2 is a front view of the heat exchanger fin of FIG. 1-1;
fig. 2-1 is a schematic view of a first structure of a heat exchange fin provided in an embodiment of the present invention;
FIG. 2-2 is a cross-sectional view of the heat exchanger fin shown in FIG. 2-1;
2-3 are enlarged views of the zone units shown in FIGS. 2-2;
2-4 are fluid flow diagrams of the heat exchanger fin of FIG. 2-1;
fig. 3-1 is a schematic view of a second structure of a heat exchange fin provided in an embodiment of the present invention;
FIG. 3-2 is a cross-sectional view of the heat exchanger fin shown in FIG. 3-1;
3-3 are enlarged views of the zone units shown in FIG. 3-2;
3-4 are fluid flow diagrams of the heat exchanger fin shown in FIG. 3-1;
4-1 to 9-2 are schematic structural diagrams of modifications of the heat exchange fin provided by the embodiment of the invention;
FIG. 10-1 is a schematic view of a flow field simulation of the heat exchanger fin shown in FIG. 1-1;
FIG. 10-2 is a schematic view of a flow field simulation of the heat exchanger fin shown in FIG. 2-1;
FIG. 10-3 is a schematic view of a flow field simulation of the heat exchanger fin shown in FIG. 3-1;
fig. 10-4 are schematic diagrams for comparing the performances of three types of heat exchange fins.
Icon: 100-a first zone structure; 200-a second zone structure; 300-increasing wave band unit; 310-lifting wave top plate; 320-lifting wave bottom plate; 330-a first wave side plate; 331-first wave side top; 332-first wave side bottom; 333-first wave side middle part; 340-a second wave side plate; 341-second wave side top; 342-second wave side bottom; 343-second wave side middle.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or the orientations or positional relationships that the products of the present invention are conventionally placed in use, and are only used for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.
Furthermore, the terms "horizontal", "vertical", "overhang" and the like do not imply that the components are required to be absolutely horizontal or overhang, but may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.
In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Some embodiments of the invention are described in detail below with reference to the accompanying drawings. The embodiments described below and the features of the embodiments can be combined with each other without conflict.
Examples
The embodiment provides a heat exchange fin and a heat exchanger; referring to fig. 2-1 to 10-4, fig. 2-1 is a first structural schematic view of a heat exchange fin provided in this embodiment, in which an incremental band unit is similar to a butterfly shape, fig. 2-2 is a cross-sectional view of the heat exchange fin shown in fig. 2-1, fig. 2-3 is an enlarged view of the band unit shown in fig. 2-2, and fig. 2-4 is a fluid flow schematic view of the heat exchange fin shown in fig. 2-1; fig. 3-1 is a second structural schematic diagram of the heat exchange fin provided in this embodiment, in which an incremental zone unit is shown to be similar to a W shape, fig. 3-2 is a sectional view of the heat exchange fin shown in fig. 3-1, fig. 3-3 is an enlarged view of the zone unit shown in fig. 3-2, and fig. 3-4 is a fluid flow schematic diagram of the heat exchange fin shown in fig. 3-1; fig. 4-1 to 9-2 are schematic structural views of modifications of the heat exchange fin provided in the embodiment of the present invention. To better illustrate the structure, the zone structures shown by hatching in fig. 2-2, 3-2, 4-2, 5-2, 6-2, 7-2, 8-2, and 9-2 are the first zone structure, the zone structure shown by hatching in fig. 8-2 and 9-2 is the second zone structure, and the individual zone units are separated by dashed lines. Fig. 10-1 is a schematic view showing a simulation of a flow field of the heat exchange fin shown in fig. 1-1, fig. 10-2 is a schematic view showing a simulation of a flow field of the heat exchange fin shown in fig. 2-1, fig. 10-3 is a schematic view showing a simulation of a flow field of the heat exchange fin shown in fig. 3-1, and fig. 10-4 is a schematic view showing a comparison of performances of the three types of heat exchange fins. 2-1 to 9-2 only show examples of heat exchange fins, the number of the first zone structure and the second zone structure may be adjusted according to actual conditions, and the zone units included in the first zone structure and the second zone structure may also be adjusted according to actual conditions.
The heat exchange fin provided by the embodiment is used for a heat exchanger, particularly a plate type heat exchanger; the heat exchange fin can be used for new energy automobiles and heat exchangers of traditional automobiles. Referring to fig. 2-1 to 9-2, the heat exchange fin includes a plurality of first zone structures 100 and a plurality of second zone structures 200; the plurality of first zone structures 100 and the plurality of second zone structures 200 are alternately connected in sequence in the width direction of the heat exchange fin.
The first zone structure 100 includes a plurality of first zone units; the plurality of first wave band units are sequentially connected along the length direction of the heat exchange fins to form first wave band units; the second zone structure 200 includes a plurality of second zone units; the plurality of second zone units are sequentially connected along the length direction of the heat exchange fins to form second zone units.
The first zone unit and/or the second zone unit is an increasing zone unit 300; that is, the first zone unit is the increasing zone unit 300, or the second zone unit is the increasing zone unit 300, or both the first zone unit and the second zone unit are the increasing zone unit 300.
The incremental band unit 300 is configured to have a tendency for fluid flowing along the length direction of the heat exchange fins to flow along the height direction of the heat exchange fins; generally, the fluid flows substantially along the length direction of the heat exchange fins (as shown in fig. 10-1), the incremental band unit 300 can disturb the flow direction of the fluid, so that the fluid flows along the height direction of the heat exchange fins, and thus the fluid forms a secondary flow in the height direction of the heat exchange fins (as shown in fig. 10-2 and fig. 10-3), and further, the heat exchange capacity can be effectively improved. The increased band unit 300 can also increase the effective heat exchange area of the fins under the same fin consumables.
In this embodiment, the length directions of the first and second band structures 100 and 200 are the same as the length directions of the heat exchange fins, the width directions of the first and second band structures 100 and 200 are the same as the width directions of the heat exchange fins, and the height directions of the first and second band structures 100 and 200 are the same as the height directions of the heat exchange fins. The zone unit according to the present embodiment includes a first zone unit and a second zone unit.
In the heat exchange fin in this embodiment, the first band unit and/or the second band unit is the increasing band unit 300, and the increasing band unit 300 is configured to make the fluid flowing along the length direction of the heat exchange fin have a tendency of flowing along the height direction of the heat exchange fin, so that the increasing band unit 300 effectively disturbs the flowing direction of the fluid, and the fluid flows along the height direction of the heat exchange fin, so that the fluid forms a secondary flow in the height direction of the heat exchange fin, and further, the heat exchange capability between the heat dissipation fin and the fluid can be effectively improved, and the heat exchange efficiency of the heat exchanger is improved to a certain extent.
Referring to fig. 1-1 and 1-2, commonly used heat dissipation fins of the prior art are staggered-tooth fins; the staggered-tooth fin includes a plurality of first zone structures 100 and a plurality of second zone structures 200, each first zone structure 100 and each second zone structure 200 including a plurality of zone units; the staggered-tooth fins generally adopt the steps of reducing the height of the fins, encrypting the peak distance (the length of a single wave band unit) and reducing the pitch (the distance between the first wave band structure 100 and the second wave band structure 200) to improve the heat exchange capacity, but the flow resistance of the staggered-tooth fins is increased more at the same time, and the material consumption per unit volume is increased. In the process of encrypting the conventional staggered-tooth fins, the welding area occupation ratio of the staggered-tooth fins to the core plate of the heat exchanger is still between 1/2 and 1/4, and the effective utilization rate of the fin area is not high.
In the heat exchange fin in this embodiment, the increasing band unit 300 is adopted by the first band unit and/or the second band unit to increase the heat exchange coefficient in a manner of enhancing the secondary flow in the height direction of the heat exchange fin, so as to increase the heat exchange efficiency of the heat exchanger.
Referring to fig. 2-3 and 3-3, in an alternative of the present embodiment, the increasing wave band unit 300 includes an increasing wave top plate 310, an increasing wave bottom plate 320, a first wave side plate 330, and a second wave side plate 340; the increasing wave top plate 310 and the increasing wave bottom plate 320 are connected by a first wave side plate 330 and a second wave side plate 340, respectively.
In two adjacent increasing wave band units 300, two increasing wave top plates 310 are arranged at intervals, and two increasing wave bottom plates 320 are connected.
The first wave-side plate 330 and/or the second wave-side plate 340 are non-linear. That is, the first wave-side plate 330 is nonlinear, the second wave-side plate 340 is nonlinear, or both the first wave-side plate 330 and the second wave-side plate 340 are nonlinear.
In the heat exchange fin of this embodiment, the nonlinear first wave side plate 330 and/or the nonlinear second wave side plate 340 are/is used to improve the performance that the increased wave band unit 300 disturbs the fluid to make the fluid flow along the height direction of the heat exchange fin, so that the fluid forms a secondary flow in the height direction of the heat exchange fin, and further, the heat exchange capability between the heat dissipation fin and the fluid can be effectively improved. In the heat exchange fin of this embodiment, by using the nonlinear first corrugated side plate 330 and/or the nonlinear second corrugated side plate 340, the cross section of the fluid channel close to the enhanced corrugated top plate 310 can be smaller than the cross section of the fluid channel close to the enhanced corrugated bottom plate 320, so that the fluid has a larger resistance coefficient near the enhanced corrugated top plate 310, the fluid has a smaller resistance coefficient near the enhanced corrugated bottom plate 320, and the resistance coefficients of the top and the bottom of the heat exchange fin are different, so that the fluid has a wavy flow trend in the height direction; the height direction fluctuating flow trend caused by different resistance coefficients of the top and the bottom of the heat exchange fin and the effect of disturbing the fluid by the increased wave band unit 300 to enable the fluid to flow along the height direction of the heat exchange fin are mutually and positively superposed, so that the strong height direction fluctuating flow trend is formed, the secondary flow formed by the fluid in the height direction of the heat exchange fin is enhanced, and the heat exchange capacity can be effectively improved.
The first wave side plate 330 and/or the second wave side plate 340 are non-linear, and may be, for example, a polygonal line, a curved line or other shapes. Referring to fig. 2-1 to 9-2, in an alternative embodiment, the first corrugated side plate 330 is in a zigzag shape or a curve shape, and the second corrugated side plate 340 is in a zigzag shape or a curve shape in the length direction of the heat exchange fin. The first wave-side plate 330 and the second wave-side plate 340 may have the same shape or different shapes.
For example, referring to fig. 2-3, when the first corrugated side plate 330 is in a zigzag shape, the first corrugated side plate 330 includes a first corrugated side top 331 and a first corrugated side bottom 332; the enhanced wave top plate 310, the first wave side top 331, the first wave side bottom 332 and the enhanced wave bottom plate 320 are fixedly connected in sequence; the included angle between the first wave side top 331 and the first wave side bottom 332 is an obtuse angle.
Alternatively, referring to fig. 2-3, when the second corrugated side plate 340 is in a zigzag shape, the second corrugated side plate 340 includes a second corrugated side top 341 and a second corrugated side bottom 342; the enhanced wave top plate 310, the second wave side top 341, the second wave side bottom 342 and the enhanced wave bottom plate 320 are fixedly connected in sequence; the angle between the second wave side top 341 and the second wave side bottom 342 is an obtuse angle.
For another example, referring to fig. 3-3, when the first wave-side plate 330 is in a zigzag shape, the first wave-side plate 330 includes a first wave-side top portion 331, a first wave-side middle portion 333, and a first wave-side bottom portion 332; the enhanced wave top plate 310, the first wave side top 331, the first wave side middle 333, the first wave side bottom 332 and the enhanced wave bottom plate 320 are fixedly connected in sequence; an included angle between the first wave side top 331 and the first wave side middle 333 is an acute angle, a right angle, or an obtuse angle, and an included angle between the first wave side bottom 332 and the first wave side middle 333 is an acute angle, a right angle, or an obtuse angle; optionally, the first wave side plate 330 is non-linear. The first wave side middle part 333 is arranged in the middle of the heat exchange fin to play a role of enhancing the turbulent flow of the fluid. Alternatively, the first wave-side middle part 333 may be a plane parallel to the increasing wave top plate 310, or may be an inclined plane having an angle with the increasing wave top plate 310.
Alternatively, referring to fig. 3-3, when the second wave-side plate 340 is in a zigzag shape, the second wave-side plate 340 includes a second wave-side top 341, a second wave-side middle 343, and a second wave-side bottom 342; the enhanced wave top plate 310, the second wave side top 341, the second wave side middle 343, the second wave side bottom 342 and the enhanced wave bottom plate 320 are fixedly connected in sequence; an included angle between the second wave side top 341 and the second wave side middle 343 is an acute angle, a right angle, or an obtuse angle, and an included angle between the second wave side bottom 342 and the second wave side middle 343 is an acute angle, a right angle, or an obtuse angle; optionally, the second wave side plate 340 is non-linear. The second wave side middle part 343 is arranged in the middle of the heat exchange fin to play a role in enhancing fluid turbulence. Optionally, the second wave-side middle part 343 is a plane parallel to the increasing wave top plate 310, and may also be an inclined plane having an included angle with the increasing wave top plate 310.
As another example, referring to fig. 8-2, in an alternative embodiment of the present embodiment, when the first wave-side plate 330 is curved, the first wave-side plate 330 includes a first wave-side top 331 and a first wave-side bottom 332; the enhanced wave top plate 310, the first wave side top 331, the first wave side bottom 332 and the enhanced wave bottom plate 320 are fixedly connected in sequence; the bending direction of the first wave side top 331 is the same as or opposite to the bending direction of the first wave side bottom 332. The bending direction of the first wave side top 331 shown in fig. 8-2 is opposite to the bending direction of the first wave side bottom 332.
Alternatively, referring to fig. 8-2, in an alternative embodiment of the present invention, when the second wave-side plate 340 is curved, the second wave-side plate 340 includes a second wave-side top 341 and a second wave-side bottom 342; the enhanced wave top plate 310, the second wave side top 341, the second wave side bottom 342 and the enhanced wave bottom plate 320 are fixedly connected in sequence; the bending direction of the second wave side top 341 is the same as or opposite to the bending direction of the second wave side bottom 342. The bending direction of the second wave side top 341 shown in fig. 8-2 is opposite to the bending direction of the second wave side bottom 342.
Referring to fig. 3-2, 3-3, 4-2, 5-2, 6-2, and 7-2, in an alternative to the present embodiment, the increasing wave top plate 310, the increasing wave bottom plate 320, the first wave side middle portion 333, and the second wave side middle portion 343 are parallel to each other.
Referring to fig. 9-2, in an alternative of this embodiment, the increasing wave top plate 310 and the increasing wave bottom plate 320 are parallel to each other, the first wave side middle part 333 and the second wave side middle part 343 respectively form an angle with the increasing wave top plate 310, and the first wave side middle part 333 and the second wave side middle part 343 form an angle.
In an alternative of this embodiment, the height of the first wave-side middle portion 333 is the same as or different from the height of the second wave-side middle portion 343 in the height direction of the heat exchange fins; as shown in fig. 3-2, 3-3, 4-2, and 5-2, the height of the first wave-side middle portion 333 is the same as the height of the second wave-side middle portion 343; as shown in fig. 6-2 and 7-2, the height of the first wave-side middle portion 333 is different from the height of the second wave-side middle portion 343.
In an alternative of this embodiment, the first wave side middle part 333 of the first band structure 100 is connected to and on the same plane as the first wave side middle part 333 of the adjacent second band structure 200, and the second wave side middle part 343 of the first band structure 100 is connected to and on the same plane as the second wave side middle part 343 of the adjacent second band structure 200, so as to facilitate the production and processing of the heat exchange fins.
Referring to fig. 2-1 to 2-3, in an alternative of this embodiment, when the first wave-side plate 330 and the second wave-side plate 340 are both in a zigzag shape, the first wave-side plate 330 formed by the connected first wave-side top portion 331 and the first wave-side bottom portion 332 and the second wave-side plate 340 formed by the connected second wave-side top portion 341 and the second wave-side bottom portion 342 are bent in the same direction; the first wave side top 331 of the first zone structure 100 is parallel to the first wave side bottom 332 of the adjacent second zone structure 200, and the second wave side bottom 342 of the first zone structure 100 is parallel to the second wave side top 341 of the adjacent second zone structure 200; the increasing wave top plate 310 of the first wave band structure 100 is connected to the increasing wave top plate 310 of the adjacent second wave band structure 200, and the increasing wave bottom plate 320 of the first wave band structure 100 is connected to the increasing wave bottom plate 320 of the adjacent second wave band structure 200. By the first wave side top 331 of the first zone structure 100 being parallel to the first wave side bottom 332 of the adjacent second zone structure 200, and the second wave side bottom 342 of the first zone structure 100 being parallel to the second wave side top 341 of the adjacent second zone structure 200, that is, two sets of inclined surfaces are symmetrically distributed and alternately arranged in sequence, the fluid has a flow tendency of vertically crossing the blocking surface, so the structure can effectively make the fluid form a height-direction wave flow tendency. As shown in fig. 2-4, the direction of the arrows shown in the figures is the direction of fluid flow.
Referring to fig. 3-1 to 3-3, 4-2, 6-2 and 7-2, in an alternative of this embodiment, when the first wave-side plate 330 and the second wave-side plate 340 are both zigzag-shaped, the first wave band unit is centrosymmetric to the corresponding second wave band unit, that is, the first wave-side top 331 of the first wave band structure 100 is parallel to the second wave-side top 341 of the adjacent second wave band structure 200, the second wave-side bottom 342 of the first wave band structure 100 is parallel to the first wave-side top 331 of the adjacent second wave band structure 200, that is, two sets of inclined surfaces are symmetrically distributed and alternated in sequence, and the fluid has a flow tendency vertically crossing the blocking surface, so the structure can effectively make the fluid form a height-direction wave flow tendency. As shown in fig. 3-4, the direction of the arrows shown in the figures is the direction of fluid flow. The increasing wave top plate 310, the increasing wave bottom plate 320, the first wave side middle part 333 and the second wave side middle part 343 are parallel to each other; the first wave side middle part 333 of the first band structure 100 is connected to and on the same plane as the first wave side middle part 333 of the adjacent second band structure 200, and the second wave side middle part 343 of the first band structure 100 is connected to and on the same plane as the second wave side middle part 343 of the adjacent second band structure 200.
Referring to fig. 5-2 and 9-2, in an alternative of the present embodiment, when both the first wave-side plate 330 and the second wave-side plate 340 are in a broken line shape, the first wave-side top portion 331 of the first waveband structure 100 is parallel to the second wave-side bottom portion 342 of the adjacent second waveband structure 200, and the second wave-side bottom portion 342 of the first waveband structure 100 is parallel to the first wave-side top portion 331 of the adjacent second waveband structure 200; the first wave side middle part 333 of the first band structure 100 is connected to and on the same plane as the first wave side middle part 333 of the adjacent second band structure 200, and the second wave side middle part 343 of the first band structure 100 is connected to and on the same plane as the second wave side middle part 343 of the adjacent second band structure 200.
Referring to fig. 2-1 to 9-2, in an alternative of the present embodiment, the increasing band unit 300 has a band unit cavity (not labeled in the drawings) provided with a cavity opening on the increasing band base plate 320; that is, the lift wave floor 320 includes a deck and a cavity opening.
Along the length direction of the heat exchange fins, the sum of the length of the increasing wave top plate 310 and the effective plate surface length of the increasing wave bottom plate 320 is not more than half of the length of the increasing wave band unit 300; along the length direction of the heat exchange fins, the effective length of the plate surface of the increasing wave bottom plate 320 is the length of the increasing wave bottom plate 320 minus the length of the cavity opening. In the heat exchanger, the increasing wave band unit 300 is respectively contacted with the core plate of the heat exchanger through the plate surface of the increasing wave bottom plate 320 and the increasing wave top plate 310; by making the sum of the length of the enhanced wave top plate 310 and the effective plate surface length of the enhanced wave bottom plate 320 not more than half of the length of the enhanced wave band unit 300, the welding area between the enhanced wave band unit 300 and the core plate of the heat exchanger can be reduced, and further the welding area between the heat exchange fin and the core plate of the heat exchanger can be reduced, so that the heat exchange fin described in the embodiment has a larger secondary heat exchange area under the condition of the same fin consumption material in the same flow channel volume, for example, the increase of the heat exchange area is about 10% -35%, thereby improving the heat exchange performance.
In the heat exchange fin in this embodiment, the sum of the length of the increasing wave top plate 310 and the effective plate surface length of the increasing wave bottom plate 320 is not greater than half of the length of the increasing wave band unit 300, and the fluid channel cross section close to the increasing wave top plate 310 can be further made smaller than the fluid channel cross section close to the increasing wave bottom plate 320, so that the fluid has a larger resistance coefficient near the increasing wave top plate 310, the fluid has a smaller resistance coefficient near the increasing wave bottom plate 320, and the resistance coefficients of the top and the bottom of the heat exchange fin are different, so that the fluid has a fluctuating flow tendency in the height direction; the height direction fluctuating flow trend caused by different resistance coefficients of the top and the bottom of the heat exchange fin and the effect of disturbing the fluid by the increased wave band unit 300 to enable the fluid to flow along the height direction of the heat exchange fin are mutually and positively superposed, so that the strong height direction fluctuating flow trend is formed, the secondary flow formed by the fluid in the height direction of the heat exchange fin is enhanced, and the heat exchange capacity can be effectively improved.
Optionally, in the length direction of the heat exchange fin, the sum of the length of the increasing wave top plate 310 and the effective plate surface length of the increasing wave bottom plate 320 is not greater than 1/3 of the length of the increasing wave band unit 300.
In an alternative of this embodiment, the incremental band unit 300 has an axisymmetric structure; so as to facilitate the production and processing of the heat exchange fins.
In an alternative of this embodiment, the first zone unit and the second zone unit are both increasing zone units 300, and the first zone unit is centrosymmetric to the corresponding second zone unit; so as to facilitate the production and processing of the heat exchange fins.
In an alternative of this embodiment, the first band unit and the second band unit are both increasing band units 300, and the first band unit is axisymmetric to the corresponding second band unit; so as to facilitate the production and processing of the heat exchange fins.
In an alternative of this embodiment, the heat exchange fins are formed by stamping or rolling to form the first zone structures 100 and the second zone structures 200, and the plurality of first zone structures 100 and the plurality of second zone structures 200 are sequentially and alternately connected in the width direction of the heat exchange fins to form the heat exchange fins. The first and second zone structures 100 and 200 are formed by stamping or rolling to reduce the production cost of the heat exchange fins.
The welding area of the traditional staggered tooth fin and the core plate of the heat exchanger accounts for 1/4-1/2 of the total surface, and large material waste is formed. The heat exchange area of the heat exchange fin is increased by 10% -35% compared with that of the conventional staggered-tooth fin on the basis of the same consumable material; in the conventional staggered-tooth fin, almost no secondary flow exists in the aspect of height of fluid flow, and the flow direction is basically parallel to the primary surface, and the flow field simulation schematic diagram of the heat exchange fin shown in fig. 1-1 shown in fig. 10-1 is referred, wherein the fluid flow direction is basically parallel to the primary surface. In the embodiment, the heat exchange fin forms strong secondary flow in the height direction, so that the heat exchange capacity is effectively improved, which is shown in a flow field simulation schematic diagram of the heat exchange fin shown in fig. 2-1 shown in fig. 10-2 and a flow field simulation schematic diagram of the heat exchange fin shown in fig. 3-1 shown in fig. 10-3. A large number of experiments prove that the heat exchange capacity (the product of the heat exchange coefficient and the heat exchange area) of the heat exchange fin is improved by about 20-35% compared with that of the traditional staggered-tooth fin under the design condition of the same material consumption and the same resistance.
TABLE 1 difference of heat exchange fin structure
The heat exchange fins are formed by stamping or rolling plates, and the consumption rate of the fins is expressed by the volume ratio of the fins in a unit volume basin. As shown in Table 1, the W-shaped tooth of one configuration is 1.2% larger than the conventional tooth, and the butterfly-shaped tooth of one configuration is 18.1% smaller than the conventional tooth; the effective heat dissipation areas of the W-shaped teeth and the butterfly-shaped teeth are respectively 37.4 percent higher and 21.2 percent higher than those of the conventional teeth. As shown in FIGS. 10-4, the heat exchange capacity of the W-shaped teeth and the butterfly-shaped teeth is improved by about 35 percent and 20 percent on average compared with that of the conventional teeth under the same resistance level in the conventional flow speed working range. In table 1 and fig. 10-4, the normal-fin teeth refer to the conventional staggered-tooth fin shown in fig. 1-1, the W-shaped teeth refer to the heat exchange fin shown in this embodiment shown in fig. 3-1, and the butterfly-shaped teeth refer to the heat exchange fin shown in this embodiment shown in fig. 2-1.
The embodiment provides a heat exchanger, including foretell heat transfer fin. According to the heat exchanger, the first wave band unit and/or the second wave band unit of the heat exchange fins are/is the increasing wave band unit 300, and the increasing wave band unit 300 is configured to enable fluid flowing along the length direction of the heat exchange fins to have a tendency of flowing along the height direction of the heat exchange fins, so that the increasing wave band unit 300 effectively disturbs the flowing direction of the fluid and enables the fluid to flow along the height direction of the heat exchange fins, secondary flow is formed by the fluid in the height direction of the heat exchange fins, the heat exchange capacity of the heat dissipation fins and the fluid can be effectively improved, and the heat exchange efficiency of the heat exchanger is improved to a certain extent.
The heat exchanger provided by the embodiment comprises the heat exchange fin, the technical characteristics of the disclosed heat exchange fin are also suitable for the heat exchanger, and the technical characteristics of the disclosed heat exchange fin are not described repeatedly. The heat exchanger in the embodiment has the advantages of the heat exchange fin, and the advantages of the heat exchange fin disclosed above are not described repeatedly.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A heat exchange fin comprising a plurality of first zone structures and a plurality of second zone structures; the plurality of first zone structures and the plurality of second zone structures are sequentially and alternately connected along the width direction of the heat exchange fins;
the first zone structure comprises a plurality of first zone units; the plurality of first waveband units are sequentially connected along the length direction of the heat exchange fins; the second zone structure comprises a plurality of second zone units; the second wave band units are sequentially connected along the length direction of the heat exchange fins;
the first zone unit and/or the second zone unit are increasing zone units; the incremental band unit is configured to cause fluid flowing along a length direction of the heat exchange fins to have a tendency to flow along a height direction of the heat exchange fins.
2. The heat exchange fin of claim 1, wherein the incremental wave band unit comprises an incremental wave top plate, an incremental wave bottom plate, a first wave side plate and a second wave side plate; the enhanced wave top plate and the enhanced wave bottom plate are respectively connected through the first wave side plate and the second wave side plate;
in two adjacent increasing wave band units, two increasing wave top plates are arranged at intervals and connected with each other;
the first wave side plate and/or the second wave side plate are nonlinear.
3. The heat exchange fin according to claim 2, wherein the first corrugated side plate is in a zigzag shape or a curved shape, and the second corrugated side plate is in a zigzag shape or a curved shape in the length direction of the heat exchange fin;
and/or the increasing wave band unit is provided with a wave band unit cavity, and a cavity opening is formed in the increasing wave band bottom plate of the wave band unit cavity; along the length direction of the heat exchange fins, the sum of the length of the enhanced wave top plate and the effective length of the plate surface of the enhanced wave bottom plate is not more than half of the length of the enhanced wave band unit; the effective length of the plate surface of the enhanced wave bottom plate is obtained by subtracting the length of the cavity opening from the length of the enhanced wave bottom plate.
4. The heat exchange fin according to claim 2, wherein when the first corrugated side plate is in a zigzag shape, the first corrugated side plate comprises a first corrugated side top and a first corrugated side bottom; the enhanced wave top plate, the first wave side top, the first wave side bottom and the enhanced wave bottom plate are fixedly connected in sequence; an included angle between the top of the first wave side and the bottom of the first wave side is an obtuse angle;
or when the first wave side plate is in a zigzag shape, the first wave side plate comprises a first wave side top, a first wave side middle part and a first wave side bottom; the enhanced wave top plate, the first wave side top, the first wave side middle part, the first wave side bottom and the enhanced wave bottom plate are fixedly connected in sequence; an included angle between the top of the first wave side and the middle of the first wave side is an acute angle, a right angle or an obtuse angle, and an included angle between the bottom of the first wave side and the middle of the first wave side is an acute angle, a right angle or an obtuse angle;
or when the first wave side plate is in a curve shape, the first wave side plate comprises a first wave side top part and a first wave side bottom part; the enhanced wave top plate, the first wave side top, the first wave side bottom and the enhanced wave bottom plate are fixedly connected in sequence; the bending direction of the top of the first wave side is the same as or opposite to the bending direction of the bottom of the first wave side.
5. The heat exchange fin according to claim 4, wherein when the second corrugated side plate is in a zigzag shape, the second corrugated side plate comprises a second corrugated side top and a second corrugated side bottom; the enhanced wave top plate, the second wave side top, the second wave side bottom and the enhanced wave bottom plate are fixedly connected in sequence; an included angle between the top of the second wave side and the bottom of the second wave side is an obtuse angle;
or when the second wave side plate is in a zigzag shape, the second wave side plate comprises a second wave side top, a second wave side middle part and a second wave side bottom; the enhanced wave top plate, the second wave side top, the second wave side middle part, the second wave side bottom and the enhanced wave bottom plate are fixedly connected in sequence; an included angle between the top of the second wave side and the middle of the second wave side is an acute angle, a right angle or an obtuse angle, and an included angle between the bottom of the second wave side and the middle of the second wave side is an acute angle, a right angle or an obtuse angle;
or when the second wave side plate is in a curve shape, the second wave side plate comprises a second wave side top and a second wave side bottom; the enhanced wave top plate, the second wave side top, the second wave side bottom and the enhanced wave bottom plate are fixedly connected in sequence; the bending direction of the second wave side top is the same as or opposite to the bending direction of the second wave side bottom.
6. The heat exchange fin of claim 5, wherein the enhanced wave top plate, the enhanced wave bottom plate, the first wave side intermediate portion and the second wave side intermediate portion are parallel to each other; the height of the first wave side middle part is the same as or different from that of the second wave side middle part;
or the enhanced wave top plate and the enhanced wave bottom plate are parallel to each other, the first wave side middle part and the second wave side middle part respectively form an included angle with the enhanced wave top plate, and the first wave side middle part forms an included angle with the second wave side middle part.
7. The heat exchange fin according to claim 5, wherein the height of the first corrugation side midportion is the same as or different from the height of the second corrugation side midportion in the height direction of the heat exchange fin;
and/or the first wave side middle part of the first waveband structure is connected with the first wave side middle part of the adjacent second waveband structure and is positioned on the same plane, and the second wave side middle part of the first waveband structure is connected with the second wave side middle part of the adjacent second waveband structure and is positioned on the same plane.
8. The heat exchange fin according to claim 5, wherein when the first corrugated side plate and the second corrugated side plate are both in a zigzag shape, the first corrugated side plate formed by the top of the first corrugated side and the bottom of the first corrugated side which are connected with each other has the same bending direction as the second corrugated side plate formed by the top of the second corrugated side and the bottom of the second corrugated side which are connected with each other; a first wave-side top of the first band structure is parallel to a first wave-side bottom of the second adjacent band structure, a second wave-side bottom of the first band structure is parallel to a second wave-side top of the second adjacent band structure; the increasing wave top plate of the first wave band structure is connected with the adjacent increasing wave top plate of the second wave band structure, and the increasing wave bottom plate of the first wave band structure is connected with the adjacent increasing wave bottom plate of the second wave band structure;
or when the first wave side plate and the second wave side plate are both in a zigzag shape, the first wave band unit is centrosymmetric with the corresponding second wave band unit; the enhanced wave top plate, the enhanced wave bottom plate, the middle part of the first wave side and the middle part of the second wave side are mutually parallel; the first wave side middle part of the first wave band structure is connected with the first wave side middle part of the adjacent second wave band structure and is positioned on the same plane, and the second wave side middle part of the first wave band structure is connected with the second wave side middle part of the adjacent second wave band structure and is positioned on the same plane;
or when the first wave-side plate and the second wave-side plate are both in a zigzag shape, the top of the first wave side of the first wave band structure is parallel to the bottom of the second wave side of the adjacent second wave band structure, and the bottom of the second wave side of the first wave band structure is parallel to the top of the first wave side of the adjacent second wave band structure; the first wave side middle part of the first wave band structure is connected with the first wave side middle part of the adjacent second wave band structure and is positioned on the same plane, and the second wave side middle part of the first wave band structure is connected with the second wave side middle part of the adjacent second wave band structure and is positioned on the same plane.
9. The heat exchange fin according to claim 1, wherein the incremental band unit is of an axisymmetric structure;
or the first zone unit is centrosymmetric with the corresponding second zone unit;
or the first zone unit is axisymmetric with the corresponding second zone unit;
or the heat exchange fins are formed into the first waveband structure and the second waveband structure through stamping or rolling.
10. A heat exchanger comprising the heat exchange fin according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110959462.6A CN113834367A (en) | 2021-08-20 | 2021-08-20 | Heat exchange fin and heat exchanger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110959462.6A CN113834367A (en) | 2021-08-20 | 2021-08-20 | Heat exchange fin and heat exchanger |
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| CN113834367A true CN113834367A (en) | 2021-12-24 |
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| CN202110959462.6A Pending CN113834367A (en) | 2021-08-20 | 2021-08-20 | Heat exchange fin and heat exchanger |
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| CN109357474A (en) * | 2018-11-19 | 2019-02-19 | 襄阳航力机电技术发展有限公司 | Plate-fin blood plasma quick freezer cold plate |
| CN111433552A (en) * | 2017-11-27 | 2020-07-17 | 达纳加拿大公司 | Enhanced heat transfer surface |
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| GB1127478A (en) * | 1965-12-21 | 1968-09-18 | Sevelen Metallbau | A method of providing ribs on heat-exchanger surfaces with corrugated strips |
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