CN116907262A - Heat exchange assembly and plate-fin heat exchanger - Google Patents
Heat exchange assembly and plate-fin heat exchanger Download PDFInfo
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- CN116907262A CN116907262A CN202310748790.0A CN202310748790A CN116907262A CN 116907262 A CN116907262 A CN 116907262A CN 202310748790 A CN202310748790 A CN 202310748790A CN 116907262 A CN116907262 A CN 116907262A
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- 239000012530 fluid Substances 0.000 claims abstract description 131
- 238000007789 sealing Methods 0.000 claims description 22
- 230000000737 periodic effect Effects 0.000 claims description 6
- 238000000034 method Methods 0.000 abstract description 21
- 230000000694 effects Effects 0.000 abstract description 4
- 238000004519 manufacturing process Methods 0.000 description 6
- 238000012545 processing Methods 0.000 description 5
- 238000013461 design Methods 0.000 description 3
- 239000010410 layer Substances 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 125000004122 cyclic group Chemical group 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 238000005219 brazing Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- 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
- F28F3/08—Elements constructed for building-up into stacks, e.g. capable of being taken apart for cleaning
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D9/00—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
- F28D9/0031—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits for one heat-exchange medium being formed by paired plates touching each other
- F28D9/0037—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits for one heat-exchange medium being formed by paired plates touching each other the conduits for the other heat-exchange medium also being formed by paired plates touching each other
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The application provides a heat exchange assembly and a plate-fin heat exchanger. The heat exchange assembly comprises a fin body and a heat exchange plate, wherein a plurality of fins are formed on the fin body in a stamping mode, and the fin body is attached to one side of the heat exchange plate; a first fluid channel is formed between the adjacent fins and the heat exchange plate, and fluid in the first fluid channel exchanges heat with the heat exchange plate; the length of the contact surface of the first fluid passage and the heat exchange plate in the direction perpendicular to the flow direction of the fluid is set to be variable along the flow direction of the fluid. According to the application, the adjacent fins are directly utilized to form the fluid channel, so that the structure of the fins is not changed, and the integral structural strength of the fins is not damaged; meanwhile, the contact surface of the fluid channel and the heat exchange plate is changed along the vertical flow direction, the flow direction and the flow speed of the fluid are changed in the flow process, and the turbulence intensity is enhanced, so that the heat exchange effect is enhanced.
Description
Technical Field
The application belongs to the technical field of heat exchangers, and particularly relates to a heat exchange assembly and a plate-fin heat exchanger.
Background
The plate-fin heat exchanger has the characteristics of high heat transfer efficiency, compact structure, light weight, high reliability and the like, and is widely applied to the fields of aerospace, petrochemical industry, refrigeration and the like. Fins are key components affecting the performance of a plate-fin heat exchanger, and their volume is more than 80% of the total heat exchanger volume. The fin types used in the plate-fin heat exchanger are various at present, such as various structures of straight type, zigzag type, ripple type, shutter type, punching type and the like, the convection area of the fin and air and the turbulence capacity of the fin on fluid determine the heat exchange performance of the plate-fin heat exchanger, and different fin types can be used in different scenes.
In order to meet the requirement of the plate-fin heat exchanger on heat exchange efficiency, the prior art adds structural members on the fins, including processing through holes on the fin body, adding structures among the fins, combining the fins with various different structures to use, and the like, so as to increase the heat convection area with air or strengthen the heat exchange of the fins by a method of setting a turbulent structure, but the original structure of the fins is damaged due to the change of the original structure form of the fins, and the integral structural strength of the fins is influenced, thereby influencing the service life of the heat exchanger.
Disclosure of Invention
Therefore, the application provides a heat exchange assembly and a plate-fin heat exchanger, which can solve the problems that the original structure of a fin is damaged, the integral structural strength of the fin is influenced, and the service life of the heat exchanger is influenced in the prior art.
In order to solve the above problems, the present application provides a heat exchange assembly, comprising:
the heat exchange device comprises a fin body and a heat exchange plate, wherein a plurality of fins are formed on the fin body in a stamping mode, and the fin body is attached to one side of the heat exchange plate;
a first fluid channel is formed between the adjacent fins and the heat exchange plate, and fluid in the first fluid channel exchanges heat with the heat exchange plate;
the length of the contact surface of the first fluid passage and the heat exchange plate in the direction perpendicular to the flow direction of the fluid is set to be variable along the flow direction of the fluid.
Alternatively, the process may be carried out in a single-stage,
the length variation includes a combination of at least two of a length taper, and a length invariance.
Alternatively, the process may be carried out in a single-stage,
the length variation is set to be periodically varied from one end of the first fluid passage to the other end.
Alternatively, the process may be carried out in a single-stage,
the periodic variation includes a sequential cycle of tapering and flaring, or a sequential cycle of tapering and tapering.
Alternatively, the process may be carried out in a single-stage,
the first fluid channel is in the flow direction of the fluid, wherein the lengths of the convergent section and the divergent section are equal, and the length is set to be H; in the direction perpendicular to the flow direction of the fluid, the longest length is set as W, the shortest length is set as D, and 1.5 W.ltoreq.H.ltoreq.2.5W, 1.5.ltoreq.W/D.ltoreq.1.8 is satisfied.
Alternatively, the process may be carried out in a single-stage,
a second fluid channel is formed between the adjacent fins, and fluid in the second fluid channel exchanges heat with the heat exchange plate; the contact surface of the second fluid passage with the heat exchange plate is set to be constant in length in a direction perpendicular to the flow direction of the fluid.
Alternatively, the process may be carried out in a single-stage,
the first fluid passage and the second fluid passage are arranged to circulate in sequence in a direction perpendicular to the flow direction of the fluid.
Alternatively, the process may be carried out in a single-stage,
the fin body is fixedly connected with the heat exchange plate.
Alternatively, the process may be carried out in a single-stage,
the heat exchange plates are arranged in two, and the fin body is clamped between the two heat exchange plates in a sealing way.
Alternatively, the process may be carried out in a single-stage,
the heat exchange assembly further comprises sealing strips which are arranged between the two heat exchange plates and positioned on two sides of the fin body; the extending direction of the sealing strip is the same as the flow direction of the fluid.
Alternatively, the process may be carried out in a single-stage,
the two heat exchange plates, the fin body and the sealing strip which are clamped between the two heat exchange plates form a unit structure; the unit structure is provided with a plurality of units, and the units are overlapped in a heat exchange plate surface contact mode.
Alternatively, the process may be carried out in a single-stage,
in the adjacent two unit structures, the fluid flow directions are vertically arranged.
Alternatively, the process may be carried out in a single-stage,
and limiting structures are respectively arranged on two opposite sides of the heat exchange plate, the fin body and the sealing strip in the clamping direction of the two heat exchange plates.
According to another aspect of the present application there is provided a plate fin heat exchanger comprising a heat exchange assembly as described above.
The application provides a heat exchange assembly, comprising: the heat exchange device comprises a fin body and a heat exchange plate, wherein a plurality of fins are formed on the fin body in a stamping mode, and the fin body is attached to one side of the heat exchange plate; a first fluid channel is formed between the adjacent fins and the heat exchange plate, and fluid in the first fluid channel exchanges heat with the heat exchange plate; the length of the contact surface of the first fluid passage and the heat exchange plate in the direction perpendicular to the flow direction of the fluid is set to be variable along the flow direction of the fluid.
The application directly utilizes the punched fins and the heat exchange plates to form the fluid channel, so that the structure of the fins is not changed, and the integral structural strength of the fins is not damaged; meanwhile, the contact surface of the fluid channel and the heat exchange plate is changed along the vertical flow direction, the flow direction and the flow speed of the fluid are changed in the flow process, and the turbulence intensity is enhanced, so that the heat exchange effect is enhanced.
Drawings
FIG. 1 is a schematic view of a heat exchange assembly according to an embodiment of the present application;
FIG. 2 is an exploded view of a heat exchange assembly according to an embodiment of the present application;
FIG. 3 is another view of an exploded construction of a heat exchange assembly according to an embodiment of the present application;
FIG. 4 is a cross-sectional view of a fin body according to an embodiment of the present application;
FIG. 5 is a top view of a fin body according to an embodiment of the present application;
FIG. 6 is an isometric view of one configuration of a fin body according to an embodiment of the present application;
FIG. 7 is an isometric view of another configuration of a fin body according to an embodiment of the present application;
fig. 8 is a schematic diagram of a combined structure of a heat exchange assembly according to an embodiment of the application.
The reference numerals are expressed as:
1. a protrusion;
2. a heat exchange plate;
3. a sealing strip;
4. a first fluid passage; 41. a second fluid passage;
5. a fin body;
6. a fin;
7. a groove.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the technical solutions of the present application will be clearly and completely described below with reference to specific embodiments of the present application and corresponding drawings. It will be apparent that the described embodiments are only some, but not all, embodiments of the application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
It should be noted that the terms "first," "second," and the like in the description and the claims of the present application and the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that the embodiments of the application described herein may be implemented in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
Referring now to fig. 1 to 8 in combination, a heat exchange assembly according to an embodiment of the present application includes:
the heat exchange device comprises a fin body 5 and a heat exchange plate 2, wherein a plurality of fins 6 are formed on the fin body 5 in a stamping mode, and the fin body 5 is attached to one side of the heat exchange plate 2;
a first fluid channel 4 is formed between the adjacent fins 6 and the heat exchange plate 2, and fluid in the first fluid channel 4 exchanges heat with the heat exchange plate 2;
the length of the contact surface of the first fluid passage 4 with the heat exchange plate 2 in the direction perpendicular to the flow direction of the fluid is set to be variable along the flow direction of the fluid.
The fins 6 are formed on the fin body 5 in a stamping mode, the integral structure of the fins 6 is not changed, the fin body 5 is attached to one side of the heat exchange plate 2, and therefore adjacent fins 6 are attached to the heat exchange plate 2, the heat exchange area of the heat exchange plate 2 is increased, and the heat exchange efficiency is improved; in particular, the flowing heat exchange medium is injected into the first fluid channel 4 formed between the adjacent fins 6 and the heat exchange plate 2, so that the heat exchange efficiency is further improved.
The fluid channel is formed by the fins 6 and the heat exchange plate 2, the structure of the fins 6 is not changed, the integral structural strength of the fins 6 is not damaged, and the service life of the heat exchanger is not influenced.
In order to ensure good heat exchange efficiency, the shape of the contact surface of the first fluid channel 4 and the heat exchange plate 2 in the application ensures that the length of the contact surface is changed in the vertical medium flow direction, and correspondingly the flow area is also changed, so that the flow speed of the medium is correspondingly changed and the flow direction is also changed in the flow process, the flow state of the medium is in a turbulent state, the layered flow phenomenon cannot occur, the heat exchange is facilitated, and the heat exchange efficiency of the medium and the heat exchange plate 2 is improved.
Compared with the traditional fin 6 for improving the turbulence of the fluid, the fin has the advantages that turbulence intensity is improved by arranging a turbulence structure, including the forms of arranging folded plates, windowing and the like on the fin, so that the processing technology of the fin 6 is complex; the fin 6 is formed by one-step stamping forming of the fin body 5, and has the advantages of simple structure, small processing difficulty and low manufacturing cost, the fin 6 is not required to be reprocessed, the original structure of the fin 6 is not damaged, and the integral structure of the fin 6 is not influenced; in addition, since the fin 6 is not provided with the turbulence structure, the flow resistance of the fluid in the first fluid passage 4 is not increased.
According to the heat exchange assembly disclosed by the application, the turbulence intensity of fluid is improved through the change of the flow cross section area of the first fluid channel 4, the integral heat exchange efficiency of the heat exchanger is improved, the structure is simple to process, the integral structure of the conventional fin 6 is not damaged, the structural intensity of the fin 6 is not influenced, and the service life of the heat exchanger can be prolonged.
In some embodiments, the length variation includes a combination of at least two of a length taper, and a length invariance.
The length of the contact surface of the first fluid channel 4 and the heat exchange plate 2, namely the heat exchange surface with heat exchange, in the vertical flow direction adopts a combination form of at least two of tapering, gradually expanding and unchanged, is suitable for different use environments, can change the flow speed and the flow direction, and achieves the aim of improving the heat exchange efficiency.
The tapering refers to gradually shortening the length along the flowing direction; correspondingly, the gradual expansion means that the length gradually becomes longer along with the length of the flowing direction, and the invariable means that the length does not change along with the flowing direction.
The combination mode means that one section is one of the three sections and the other section is the other section in the flowing direction, so that the flowing speed and the flowing direction are changed.
In some embodiments, the length variation is set to periodically vary from one end of the first fluid channel 4 to the other.
The length change is periodically changed along with one end to the other end of the first fluid channel 4, so that the fluid can reciprocate in the first fluid channel 4 to change the speed and direction, and the heat exchange efficiency is improved; meanwhile, when the heat exchange component is manufactured, the die can be reduced, and the manufacturing cost is saved; the fins 6 are assembled on the heat exchange plate 2, so that the operation is convenient and the efficiency is high.
In some embodiments, the periodic variation comprises a gradual and gradual cycle, or a gradual and gradual cycle.
The periodic variation can be specifically a gradual-enlarging and gradual-enlarging sequential cyclic variation or a gradual-enlarging and gradual-enlarging sequential cyclic variation, and the two periodic variation modes can ensure that the fins 6 are uniformly wavy or folded when being manufactured, as shown in fig. 6, adjacent fins 6 are symmetrically arranged, so that the manufacturing and assembling operations are simple and convenient.
In some embodiments, the first fluid channel 4 is in the flow direction of the fluid, wherein the length of the converging section and the diverging section is equal, and set to H; in the direction perpendicular to the flow direction of the fluid, the longest length is set as W, the shortest length is set as D, and 1.5 W.ltoreq.H.ltoreq.2.5W, 1.5.ltoreq.W/D.ltoreq.1.8 is satisfied.
As shown in fig. 4 and 5, the first fluid channel 4 is periodically changed, wherein the magnitudes of the H value and the W/D value have an influence on the heat exchange amount and the resistance, and the H value and the W/D value are given to meet the requirements on the heat exchange amount and the resistance; the strength of the fins 6 is influenced by the W/D, and the strength of the design fins 6 is not greatly different from that of the traditional zigzag fins 6 can be effectively ensured by adopting the range.
The range is the value of the size range which can meet the requirements of heat exchange capacity and resistance in the design of the fin 6 at present, is used for protecting the product produced by design, and mainly ensures that the quality, the strength and the like of the production process of the heat exchanger are not influenced.
In some embodiments, a second fluid channel 41 is further formed between adjacent fins 6, and the fluid in the second fluid channel 41 exchanges heat with the heat exchange plate 2; the contact surface of the second fluid passage 41 with the heat exchange plate 2 is set to be constant in length in a direction perpendicular to the flow direction of the fluid.
For the fluid channels between adjacent fins 6, it is also possible to provide the contact surfaces with a constant length in the direction perpendicular to the flow direction of the fluid, so that the overall heat exchange assembly is of various construction.
Although the length is not changed, the length is not limited to the flow direction of the fluid in each section of flow direction, and the flow direction is the same as the whole flow direction, for example, the second fluid channel 41 is bent and wavy, so that the flow path is increased, the flow direction and the speed of the medium are changed irregularly, and the heat exchange efficiency is improved.
For the first fluid channel 4 and the second fluid channel 41 described above, a square cross-sectional structure is generally selected, and a triangle or a circle may be selected.
In some embodiments, the first fluid channel 4 and the second fluid channel 41 are arranged to circulate in sequence in a direction perpendicular to the flow direction of the fluid.
In the structure in which the first fluid channel 4 and the second fluid channel 41 are combined for use, the two fluid channels are sequentially and circularly arranged, the first fluid channel 4 is surrounded by two symmetrical fins 6, the second fluid channel 41 is arranged between two adjacent first fluid channels 4, the flow form of media can be changed, as shown in fig. 7, the first fluid channel 4 and the second fluid channel 41 are arranged side by side, fluid passes through the fluid channels, and heat exchange can also occur from the fluid in the first fluid channel 4 and the second fluid channel 41, so that the whole heat exchange efficiency can be improved.
In some embodiments, the fin body 5 is fixedly connected to the heat exchange plate 2.
Because the fin 6 is thinner in structure, if the fin is made of a thin copper sheet, the fin is directly formed by stamping on the fin body 5; as shown in fig. 2, 3, 6 and 7, the fin body 5 has a flat plate structure, and is stamped from one side to the other side to form a fluid channel; such fluid passages are arranged at intervals, and adjacent fluid passages are separated by fins 6; the fin body 5 is fixedly connected with the heat exchange plate 2, so that the opening of the stamping part of the fin body 5 is covered by the heat exchange plate 2, the fluid in the fluid channel, the heat exchange plate 2 and the fins 6 are subjected to heat exchange, and turbulence phenomenon must occur in the fluid channel.
In some embodiments, two heat exchange plates 2 are provided, and the fin body 5 is sealingly clamped between the two heat exchange plates 2.
The fin 6 structure is manufactured by stamping on the fin body 5, and is usually stamped at intervals, and at this time, fluid channels can be formed on two sides of the fin body 5, as shown in fig. 2, 3, 6 and 7, so that heat exchange plates 2 are arranged on two sides of the fin body 5, the fin body 5 is clamped between the two heat exchange plates 2 to form a sealing structure, and the first fluid channels 4 on two sides of the fin body 5 can be filled with medium to exchange heat with the heat exchange plates 2 on two sides; meanwhile, the media at two sides of the same fin 6 can exchange heat mutually through the fin 6, so that the overall heat exchange effect is improved.
In some embodiments, the heat exchange assembly further comprises a sealing strip 3, which is arranged between the two heat exchange plates 2 and is positioned at two sides of the fin body 5; the direction of extension of the sealing strip 3 is the same as the fluid flow direction.
Sealing strips 3 are arranged between the two heat exchange plates 2 and on two sides of the fin body 5, so that a first fluid channel 4 is formed between the sealing strips 3 and the fins 6 on the outermost side, and the flow area and the heat exchange effect are increased.
Meanwhile, the arrangement of the sealing strip 3 improves the structural stability of the whole heat exchange assembly.
In some embodiments, the two heat exchange plates 2 and the fin body 5 and the sealing strip 3 sandwiched therebetween form a unit structure; the unit structure is provided with a plurality of heat exchange plates 2 which are overlapped in a surface contact mode.
By adopting a plurality of unit structures to be overlapped, as shown in fig. 8, the adjacent unit structures can be respectively injected with media with different temperatures, and as the adjacent unit structures are in a surface contact mode of the heat exchange plate 2, heat exchange is carried out on different layers through the heat exchange plate 2, so that the heat exchange efficiency between the adjacent unit structures is high.
The two heat exchange plates 2, the fin body 5 and the sealing strip 3 can be connected together by vacuum brazing.
In some embodiments, in two adjacent unit structures, the fluid flow direction is vertically arranged.
Each unit structure only flows through one medium fluid, and a plurality of unit structures are overlapped to form the whole heat exchanger, wherein a single layer of unit structures can flow through one medium fluid, a double layer of unit structures can flow through another medium fluid, and heat is transferred through the heat exchange plates 2 between the layers.
The fluid flow directions are mutually perpendicular, so that cross heat exchange is realized, heat exchange is more uniform, and heat exchange efficiency is higher.
In some embodiments, in the direction of sandwiching the two heat exchange plates 2, the fin body 5, and the sealing strip 3 are provided with a limiting structure on opposite sides, respectively.
Through arranging limiting structures on two opposite sides of the heat exchange plate 2, the fin body 5 and the sealing strip 3 respectively, the assembly efficiency of the unit structure can be improved firstly, and the three units can be quickly and accurately overlapped by adopting the limiting structures; secondly, when a plurality of unit structures are overlapped, limiting structures on two sides of each unit structure can improve assembly speed and stability.
The limit structure comprises a groove 7 and a bulge 1 which are clamped in a matching manner, and when the concrete structure is arranged, the bulge 1 and the groove 7 are respectively arranged at the corresponding positions of the heat exchange plate 2, the sealing strip 3 and the front and back surfaces of the fin body 5, and the limit structure can be used for combining the three and fixing the three into a whole in a welding mode. More specifically, the protrusions 1 can be square and are respectively arranged at the four corner edge positions of the heat exchange plate 2 and the fin body 5 and at the two end positions of the sealing strip 3, the edge length is 5mm, and the convex surface height is 2mm; the corresponding recess 7 is dimensioned to match it.
According to another aspect of the present application there is provided a plate fin heat exchanger comprising a heat exchange assembly as described above.
The plate-fin heat exchanger comprises the heat exchange component, wherein the heat exchange component comprises the fluid channel surrounded by the fins 6 and the heat exchange plates 2, the cross section area of the medium fluid in the flowing channel is periodically changed along the flowing direction, and when the fluid flows through the fluid channel, the flowing direction and the flowing speed of the fluid are continuously changed, so that the turbulent flow intensity is enhanced, the heat exchange is enhanced, and the overall heat exchange efficiency of the heat exchanger is improved; meanwhile, the fin 6 is simple in structure, small in processing difficulty, low in cost and capable of effectively improving the production efficiency of the heat exchanger, and the fin is formed by one-step stamping through a die without increasing additional processing and manufacturing cost; in addition, the fin 6 does not damage the original fin 6 structure, the integral structural strength of the fin 6 is not influenced, the service life of the heat exchanger can be effectively prolonged, the fixing structure is arranged on each part forming the heat exchanger, the position of each part in the machining process is guaranteed not to deviate, and the machining quality is guaranteed.
It is easy to understand by those skilled in the art that the above embodiments can be freely combined and overlapped without conflict.
The foregoing description of the preferred embodiments of the application is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the application. The foregoing is merely a preferred embodiment of the present application, and it should be noted that it will be apparent to those skilled in the art that modifications and variations can be made without departing from the technical principles of the present application, and these modifications and variations should also be regarded as the scope of the application.
Claims (14)
1. A heat exchange assembly, comprising:
the heat exchange device comprises a fin body (5) and a heat exchange plate (2), wherein a plurality of fins (6) are formed on the fin body (5) in a stamping mode, and the fin body (5) is attached to one side of the heat exchange plate (2);
a first fluid channel (4) is formed between the adjacent fins (6) and the heat exchange plate (2), and fluid in the first fluid channel (4) exchanges heat with the heat exchange plate (2);
the length of the contact surface of the first fluid channel (4) with the heat exchange plate (2) in the direction perpendicular to the flow direction of the fluid is set to be variable along the flow direction of the fluid.
2. The heat exchange assembly of claim 1 wherein the change in length comprises a combination of at least two of a taper in length, and a constant length.
3. A heat exchange assembly according to claim 1, wherein the length variation is set to a periodic variation from one end of the first fluid channel (4) to the other end.
4. A heat exchange assembly according to claim 3 wherein the periodic variation comprises a sequential cycle of tapering and flaring, or a sequential cycle of tapering and tapering.
5. A heat exchange assembly according to claim 4, wherein the first fluid passage (4) is in the flow direction of the fluid, wherein the converging and diverging sections are of equal length, set to H; in the direction perpendicular to the flow direction of the fluid, the longest length is set as W, the shortest length is set as D, and 1.5 W.ltoreq.H.ltoreq.2.5W, 1.5.ltoreq.W/D.ltoreq.1.8 is satisfied.
6. Heat exchange assembly according to claim 1, wherein adjacent fins (6) also constitute second fluid channels (41), the fluid in the second fluid channels (41) being in heat exchange with the heat exchange plates (2); the contact surface of the second fluid channel (41) with the heat exchange plate (2) is set to be constant in length in a direction perpendicular to the flow direction of the fluid.
7. A heat exchange assembly according to claim 6, wherein the first fluid channel (4) and the second fluid channel (41) are arranged in a circulating arrangement in sequence in a direction perpendicular to the flow direction of the fluid.
8. A heat exchange assembly according to any one of claims 1-7, wherein the fin body (5) is fixedly connected to the heat exchange plate (2).
9. Heat exchange assembly according to claim 8, wherein two heat exchange plates (2) are provided, the fin body (5) being sealingly clamped between two heat exchange plates (2).
10. The heat exchange assembly according to claim 9, further comprising a sealing strip (3) arranged between two of the heat exchange plates (2) and located on both sides of the fin body (5); the extending direction of the sealing strip (3) is the same as the fluid flow direction.
11. Heat exchange assembly according to claim 9 or 10, wherein two of the heat exchange plates (2) and the fin body (5) and the sealing strip (3) sandwiched therebetween constitute a unit structure; the unit structure is provided with a plurality of heat exchange plates (2) which are overlapped in a surface contact mode.
12. The heat exchange assembly of claim 11 wherein the fluid flow direction is vertically disposed in adjacent ones of the cell structures.
13. Heat exchange assembly according to claim 12, wherein, in the direction of the sandwiching of the two heat exchange plates (2), the fin body (5) and the sealing strip (3) are provided with limit structures on opposite sides, respectively.
14. A plate fin heat exchanger comprising a heat exchange assembly according to any one of claims 1 to 13.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310748790.0A CN116907262A (en) | 2023-06-21 | 2023-06-21 | Heat exchange assembly and plate-fin heat exchanger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310748790.0A CN116907262A (en) | 2023-06-21 | 2023-06-21 | Heat exchange assembly and plate-fin heat exchanger |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116907262A true CN116907262A (en) | 2023-10-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310748790.0A Pending CN116907262A (en) | 2023-06-21 | 2023-06-21 | Heat exchange assembly and plate-fin heat exchanger |
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| CN (1) | CN116907262A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117268146A (en) * | 2023-11-15 | 2023-12-22 | 中国核动力研究设计院 | Diffusion welding heat exchanger and design method thereof |
-
2023
- 2023-06-21 CN CN202310748790.0A patent/CN116907262A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117268146A (en) * | 2023-11-15 | 2023-12-22 | 中国核动力研究设计院 | Diffusion welding heat exchanger and design method thereof |
| CN117268146B (en) * | 2023-11-15 | 2024-01-26 | 中国核动力研究设计院 | Diffusion welding heat exchanger and design method thereof |
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