CN114136127A - Three-medium plate heat exchanger - Google Patents
Three-medium plate heat exchanger Download PDFInfo
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- CN114136127A CN114136127A CN202111372430.2A CN202111372430A CN114136127A CN 114136127 A CN114136127 A CN 114136127A CN 202111372430 A CN202111372430 A CN 202111372430A CN 114136127 A CN114136127 A CN 114136127A
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- 230000002708 enhancing effect Effects 0.000 claims abstract description 7
- 238000003466 welding Methods 0.000 claims description 9
- 238000003825 pressing Methods 0.000 claims description 3
- 238000012545 processing Methods 0.000 abstract description 9
- 230000007547 defect Effects 0.000 abstract description 4
- 239000012530 fluid Substances 0.000 description 14
- 239000007788 liquid Substances 0.000 description 10
- 230000006872 improvement Effects 0.000 description 9
- 239000013589 supplement Substances 0.000 description 8
- 238000005516 engineering process Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 239000002131 composite material Substances 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003507 refrigerant Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000004781 supercooling Methods 0.000 description 1
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- 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
- F28D9/0093—Multi-circuit heat-exchangers, e.g. integrating different heat exchange sections in the same unit or heat-exchangers for more than two fluids
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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
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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
- F28F3/08—Elements constructed for building-up into stacks, e.g. capable of being taken apart for cleaning
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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
- F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
- F28F9/26—Arrangements for connecting different sections of heat-exchange elements, e.g. of radiators
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- Engineering & Computer Science (AREA)
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- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The invention relates to the technical field of heat exchange, in particular to a three-medium plate heat exchanger which comprises a plurality of first heat exchange plates, a plurality of second heat exchange plates, a plurality of third heat exchange plates, a plurality of mutually communicated first medium heat exchange cavities, a plurality of mutually communicated second medium heat exchange cavities and a plurality of third medium heat exchange cavities, wherein heat exchange fins for enhancing air side heat exchange are arranged in the third medium heat exchange cavities. The three-medium plate heat exchanger effectively overcomes the defects of the prior art, adopts a plurality of alternately spliced and stacked heat exchange plates to form the heat exchange cavity, and can effectively avoid the problems of difficult connection, processing and the like of a micro-channel heat exchanger.
Description
Technical Field
The invention relates to the technical field of heat exchange, in particular to a three-medium plate type heat exchanger.
Background
The heat exchanger plays a key role in the energy saving process of many industries, and with the increase of energy consumption and the rise of energy saving consciousness in recent years, the demand of the heat exchanger is continuously increased. The rapid industrial progression, strict environmental regulations and technological advances in the world are driving the growth of the heat exchanger market, and these factors have led to increased attention in heat exchanger technology.
In order to simplify the system and improve the energy utilization efficiency, in many occasions, a heat exchanger is needed to realize pairwise independent or combined heat exchange between I, II two liquid or phase change media and a gas medium III, namely, a three-medium heat exchanger requiring heat exchange between I, II two media and a medium III. The three-medium heat exchanger in the prior art mainly has a sleeve pipe type and a parallel flow composite flat pipe type structure, but the three-medium heat exchanger can only realize direct heat exchange between a medium I and a medium II and between the medium II and a fluid medium III outside an outer pipe, but cannot realize simultaneous heat exchange between the three media, and limits the development of a heat exchange technology.
In order to solve the above technical problem, the chinese utility model patent with application number 201920475400.6 "a three-medium heat exchanger" discloses a three-medium heat exchanger. The three-medium heat exchanger adopts a plurality of tightly attached micro-channel flat tubes, wherein a flowing medium I, II is introduced; radiating fins are arranged among the plurality of micro-channel flat tubes, and a flowing medium III is introduced; the micro-channel flat tubes are connected with the flow dividing tubes and the flow collecting tubes arranged on the left side and the right side of the heat exchanger and are integrally welded to form the heat exchanger. The scheme solves the problem of complex communication structure of the heat exchange tube of the parallel flow composite flat tube type three-medium heat exchanger and the branch and collecting pipes, and realizes the technical scheme of simultaneous heat exchange among three media. However, the beneficial and disadvantageous effects of the heat exchanger in practical processing and application still exist, which are specifically shown as follows:
(1) the microchannel flat tubes are inserted into the flow dividing tubes and the flow collecting tubes and are connected in a welding mode, so that the processing difficulty is high. Materials near the micro-channel are easy to dissolve simultaneously during welding, so that the medium channel is blocked;
(2) the existing micro-channel structure usually has too many baffles in the collecting pipe, so that the total length of the flow path of the liquid medium is far greater than the hydraulic diameter of a flow channel in the micro-channel, a long supercooling area is easily generated in the heat exchange of a refrigerant under partial working conditions, the heat exchange temperature difference is small, the heat exchange efficiency is low, the heat exchange area is wasted, and even the condition of no heat exchange is generated;
(3) the heat exchanger area of the first medium and the third medium is the same as that of the second medium and the third medium, so that the heat exchange between the first medium and the third medium, or the heat exchange between the second medium and the third medium, can not be enhanced;
(4) the heat exchange area of the first medium and the second medium is relatively small, the heat exchange temperature difference is large, and the application occasions when the heat exchange requirements of the first medium and the second medium are large are limited.
Accordingly, there is a need to consider improvements in the construction of three medium heat exchangers to alleviate or solve the above problems.
Disclosure of Invention
The invention provides a three-medium plate heat exchanger, which effectively overcomes the defects of the prior art, adopts a plurality of alternately spliced and stacked heat exchange plates to form a heat exchange cavity, can effectively avoid the problems of difficult connection, processing and the like of a micro-channel heat exchanger, can realize heat exchange among three media simultaneously, and can additionally increase the heat exchange area between two fluid media so as to deal with the application occasions of the two fluid media with larger heat exchange requirements.
The invention provides a three-medium plate heat exchanger, which comprises a plurality of first heat exchange plates, a plurality of second heat exchange plates, a plurality of third heat exchange plates, a plurality of mutually communicated first medium heat exchange cavities, a plurality of mutually communicated second medium heat exchange cavities, a plurality of third medium heat exchange cavities and at least one first auxiliary heat exchange assembly, wherein the first heat exchange plates, the second heat exchange plates and the third heat exchange plates are mutually and alternately spliced, each second medium heat exchange cavity is respectively formed between the mutually spliced first heat exchange plates and the mutually spliced second heat exchange plates, each first medium heat exchange cavity is respectively formed between the mutually spliced first heat exchange plates and the mutually spliced third heat exchange plates, each third medium heat exchange cavity is respectively formed between the mutually spliced second heat exchange plates and the mutually spliced third heat exchange plates, and heat exchange fins for enhancing air side heat exchange are arranged in the third medium heat exchange cavities, each first medium heat exchange cavity and each second medium heat exchange cavity are respectively distributed on two opposite sides of a third medium heat exchange cavity; the first auxiliary heat exchange assembly is formed by alternately splicing and stacking a plurality of first heat exchange plates and a plurality of second heat exchange plates, the second heat exchange plates are respectively spliced and stacked with adjacent first heat exchange plates through two opposite sides to respectively form a first medium auxiliary heat exchange cavity and a second medium heat exchange cavity, and the first medium auxiliary heat exchange cavity is communicated with the first medium heat exchange cavity.
According to the three-medium plate heat exchanger provided by the invention, the three-medium plate heat exchanger further comprises at least one second auxiliary heat exchange assembly, the second auxiliary heat exchange assembly is formed by alternately splicing and stacking a plurality of first heat exchange plates and a plurality of third heat exchange plates, the third heat exchange plates are respectively spliced and stacked with adjacent first heat exchange plates through two opposite sides to respectively form a third medium auxiliary heat exchange cavity and the first medium heat exchange cavity, and heat exchange fins for enhancing air side heat exchange are arranged in the third medium auxiliary heat exchange cavity.
According to the three-medium plate heat exchanger provided by the invention, the three-medium plate heat exchanger further comprises a first end plate and a second end plate, wherein the first end plate and the second end plate are respectively positioned at two opposite ends of the three-medium plate heat exchanger and are respectively spliced with the first heat exchange plate, the second heat exchange plate or the third heat exchange plate.
According to the three-medium plate heat exchanger provided by the invention, each of the first heat exchange plate, the second heat exchange plate, the third heat exchange plate and the first end plate is provided with a first medium inlet A, a first medium outlet a, a second medium inlet B and a second medium outlet B;
the first medium inlets a are communicated with each other in series and respectively communicated with the first medium heat exchange cavities and the first medium auxiliary heat exchange cavities, the first medium outlets a are communicated with each other in series and respectively communicated with the first medium heat exchange cavities and the first medium auxiliary heat exchange cavities, and first medium flows into the first medium heat exchange cavities and the first medium auxiliary heat exchange cavities from the first medium inlets a and respectively flows to the first medium outlets a;
the second medium inlets B are communicated with each other in series and are respectively communicated with the second medium heat exchange cavities, the second medium outlets B are communicated with each other in series and are respectively communicated with the second medium heat exchange cavities, and a second medium flows into the second medium heat exchange cavities from the second medium inlets B and respectively flows to the second medium outlets B.
According to the three-medium plate heat exchanger provided by the invention, a plurality of convex rings are respectively formed on the surfaces of the first heat exchange plate, the second heat exchange plate and the third heat exchange plate, each convex ring respectively surrounds the edges of the first medium inlet A, the first medium outlet a, the second medium inlet B and the second medium outlet B, and the plurality of convex rings comprise a closed ring and an open ring;
the first medium heat exchange cavity, the second medium heat exchange cavity and the third medium heat exchange cavity are mutually separated through the closed ring;
each first medium inlet A, each first medium heat exchange cavity, each first medium auxiliary heat exchange cavity and each first medium outlet a are communicated through each split ring;
and the second medium inlet B, the second medium heat exchange cavity and the second medium outlet B are communicated through the split rings respectively.
According to the three-medium plate heat exchanger provided by the invention, the first medium heat exchange cavity, the second medium heat exchange cavity and the first medium auxiliary heat exchange cavity are respectively formed by a plurality of corrugated grooves which are arranged side by side.
According to the three-medium plate type heat exchanger provided by the invention, the heat exchange fin is at least one of a flat fin, a corrugated fin, a louver fin, a wave fin, a spiral fin and a strip fin.
According to the three-medium plate heat exchanger provided by the invention, the number of the heat exchange fins is multiple, and the heat exchange fins are arranged on the third heat exchange plate along the length direction of the third heat exchange plate.
According to the three-medium plate heat exchanger provided by the invention, the first heat exchange plate, the second heat exchange plate and the third heat exchange plate are respectively connected in a welding or bolt pressing mode.
The invention provides a three-medium plate heat exchanger, which is characterized in that a plurality of first heat exchange plates, second heat exchange plates and third heat exchange plates are sequentially and alternately spliced and stacked, each second medium heat exchange cavity is respectively formed between the first heat exchange plates and the second heat exchange plates which are spliced and stacked mutually, each first medium heat exchange cavity is respectively formed between the first heat exchange plates and the third heat exchange plates which are spliced and stacked mutually, each third medium heat exchange cavity is respectively formed between the second heat exchange plates and the third heat exchange plates which are spliced and stacked mutually, so that the three-medium heat exchange plate heat exchanger can be formed, the heat exchange plates which are used for the plate heat exchanger and have mature technology and more convenient processing are adopted, the heat exchange plates are sequentially and alternately and repeatedly arranged in the heat exchanger, and after the heat exchange plates are mutually compressed, the heat exchange plates can be connected by the mature processing technology such as welding or bolts, and finally, the whole heat exchanger is formed, on one hand, a third medium heat exchange cavity through which gaseous media can pass is formed by splicing and stacking a third heat exchange plate and an adjacent second heat exchange plate, and on the other hand, each first medium heat exchange cavity and each second medium heat exchange cavity are respectively distributed at two opposite sides of the third medium heat exchange cavity through splicing and stacking the third heat exchange plate and the first heat exchange plate and splicing and stacking the first heat exchange plate and the second heat exchange plate, so that the air media in the third medium heat exchange cavity can respectively exchange heat with the first medium fluid in the first medium heat exchange cavity and the second medium fluid in the second medium heat exchange cavity from two sides, and therefore two kinds of heat exchange between the two kinds of liquid media and the gaseous media are realized, the heat exchanger has the functions which can be realized by the traditional three-medium heat exchanger and is convenient to process and connect.
Furthermore, after the traditional micro-channel type three-medium heat exchanger is processed and formed, the heat exchange area between every two three media is determined and is difficult to adjust, the heat exchange area between two liquid media and gas media is the same, the heat exchange between one liquid medium and the gas media cannot be enhanced, and the heat exchange between two liquid media cannot be enhanced, in order to solve the problem, the embodiment adds a first auxiliary heat exchange assembly in the heat exchanger, the first auxiliary heat exchange assembly is formed by alternately splicing and stacking a plurality of first heat exchange plates and a plurality of second heat exchange plates, the second heat exchange plates are respectively spliced and stacked with adjacent first heat exchange plates through the left side and the right side, so as to respectively form a first medium auxiliary heat exchange cavity and a second medium heat exchange cavity, the first medium auxiliary heat exchange cavity is communicated with the first medium heat exchange cavity, so that the first medium and the second medium can mutually abut against each other through the first medium auxiliary heat exchange cavity and the second medium heat exchange cavity for heat exchange, the heat exchange area of the first medium and the second medium is increased, so that the heat exchange area of the first medium and the second medium can be flexibly increased according to actual needs; the second auxiliary heat exchange assembly is formed by alternately splicing and stacking a plurality of first heat exchange plates and a plurality of third heat exchange plates, the third heat exchange plates are respectively spliced and stacked with the adjacent first heat exchange plates through the left side and the right side, so that a third medium auxiliary heat exchange cavity and a first medium heat exchange cavity are respectively formed, a third medium and a first medium can closely exchange heat with the first medium heat exchange cavity through the third medium auxiliary heat exchange cavity, the heat exchange area of the third medium and the first medium is increased, and the heat exchange area of the third medium and the first medium can be flexibly increased according to actual needs. On the basis of three heat exchange plates which are arranged at the original alternative and repeated intervals, two heat exchange plates (two of a first heat exchange plate, a second heat exchange plate and a third heat exchange plate) are additionally arranged at the alternative and repeated intervals so as to conveniently and flexibly adapt to the application occasions with larger heat exchange requirements of certain two media. Therefore, the three-medium plate heat exchanger provided by the invention effectively overcomes the defects of the prior art, adopts a plurality of alternately spliced and stacked heat exchange plates to form heat exchange cavities (a first medium heat exchange cavity, a second medium heat exchange cavity and a third medium heat exchange cavity, and can also comprise a first medium auxiliary heat exchange cavity and a third medium auxiliary heat exchange cavity), can effectively avoid the problems of connection, difficult processing and the like of a micro-channel heat exchanger, can realize heat exchange between three media simultaneously, and can additionally increase the heat exchange area between two fluid media so as to deal with the application occasions of the two fluid media with larger heat exchange requirements.
Drawings
In order to more clearly illustrate the technical solutions of the present invention or the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is an exploded view of the present invention;
FIG. 3 is an exploded view of the present invention;
FIG. 4 is an exploded view of the present invention;
fig. 5 is a partial structural schematic diagram of the present invention.
Reference numerals:
1-a first heat exchange plate; 2-a second heat exchange plate; 3-a third heat exchange plate; 4-heat exchange fins; 5-a first end plate; 6-a second end plate; 7-a convex ring; 8-corrugated grooves; 12-a first medium auxiliary heat exchange cavity; 13-a first medium heat exchange cavity; 21-a second medium heat exchange cavity; 31-a third medium auxiliary heat exchange cavity; 32-a third medium heat exchange cavity; 71-a closed ring; 72-split ring; a-a first media inlet; 100-a first auxiliary heat exchange assembly; 200-a second auxiliary heat exchange assembly; a-a first medium outlet; b-a second medium inlet; b-a second medium outlet.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is obvious that the described embodiments are some, but not all embodiments of the present 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.
The three-medium plate heat exchanger of the present invention is described with reference to fig. 1, fig. 2 and fig. 3, and includes a plurality of first heat exchange plates 1, a plurality of second heat exchange plates 2, a plurality of third heat exchange plates 3, a plurality of first medium heat exchange cavities 13 communicated with each other, a plurality of second medium heat exchange cavities 21 communicated with each other and a plurality of third medium heat exchange cavities 32, wherein each of the first heat exchange plates 1, the second heat exchange plates 2 and the third heat exchange plates 3 are sequentially and alternately stacked, each of the second medium heat exchange cavities 21 is formed between the first heat exchange plates 1 and the second heat exchange plates 2 stacked with each other, each of the first medium heat exchange cavities 13 is formed between the first heat exchange plates 1 and the third heat exchange plates 3 stacked with each other, each of the third medium heat exchange cavities 32 is formed between the second heat exchange plates 2 and the third heat exchange plates 3 stacked with each other, heat exchange fins 4 for enhancing heat exchange on the air side are installed in the third medium heat exchange cavities 32, the first medium heat exchange cavities 13 and the second medium heat exchange cavities 21 are respectively distributed on the left side and the right side of the third medium heat exchange cavity 32.
In order to solve the problem that a plurality of microchannel flat tubes are connected in a welding mode after the flow dividing tubes and the flow collecting tubes are inserted, and materials near microchannels are easily dissolved simultaneously during welding to cause medium channel blockage, according to the technical scheme of the embodiment, by utilizing a mode that a plurality of first heat exchange plates 1, second heat exchange plates 2 and third heat exchange plates 3 are sequentially and alternately spliced with one another, each second medium heat exchange cavity 21 is respectively formed between the first heat exchange plates 1 and the second heat exchange plates 2 which are spliced with one another, each first medium heat exchange cavity 13 is respectively formed between the first heat exchange plates 1 and the third heat exchange plates 3 which are spliced with one another, each third medium heat exchange cavity 32 is respectively formed between the second heat exchange plates 2 and the third heat exchange plates 3 which are spliced with one another, so that a plate heat exchanger for exchanging heat with three media can be formed, the technology of the plate heat exchanger is mature, and the plate heat exchange plates for the plate heat exchanger are more convenient to process, the heat exchange plates are sequentially arranged in the heat exchanger alternately and repeatedly at intervals in sequence, after the heat exchange plates are pressed tightly, the heat exchange plates can be connected through a mature processing technology such as welding or bolts to form a whole heat exchanger, on one hand, a third medium heat exchange cavity 32 through which gaseous media can pass is formed by splicing and stacking a third heat exchange plate 3 and an adjacent second heat exchange plate 2, on the other hand, each first medium heat exchange cavity 13 and each second medium heat exchange cavity 21 are respectively distributed at two opposite sides of the third medium heat exchange cavity 32 through splicing and stacking of the third heat exchange plate 3 and a first heat exchange plate 1 and splicing and stacking of the first heat exchange plate 1 and the second heat exchange plate 2, so that the air media in the third medium heat exchange cavity 32 can respectively exchange heat with the first medium fluid in the first medium heat exchange cavity 13 and the second medium fluid in the second medium heat exchange cavity 21 from two sides, therefore, two liquid media and two gaseous media exchange heat with each other pairwise, the three-medium heat exchanger has the functions which can be realized by the traditional three-medium heat exchanger, and is convenient to process and connect.
According to an embodiment of the present invention, the three-medium plate heat exchanger further includes at least one first auxiliary heat exchange assembly 100, as shown in fig. 1 and fig. 3, the first auxiliary heat exchange assembly 100 is formed by alternately stacking a plurality of first heat exchange plates 1 and a plurality of second heat exchange plates 2, the second heat exchange plates 2 are respectively stacked with adjacent first heat exchange plates 1 through left and right sides, so as to respectively form a first medium auxiliary heat exchange cavity 12 and a second medium heat exchange cavity 21, and the first medium auxiliary heat exchange cavity 12 is communicated with the first medium heat exchange cavity 13.
It should be noted that the first auxiliary heat exchange assembly 100 may be disposed at any position in the heat exchanger in a continuous manner or at intervals in the form of a plurality of portions, and the position of the first auxiliary heat exchange assembly in this embodiment is not to be construed as limiting the protection scope of the present invention.
After a traditional micro-channel type three-medium heat exchanger is formed, the heat exchange area between every two three media is determined and is difficult to adjust, the heat exchange areas of the two liquid media and the gas media are the same, the heat exchange between one liquid medium and the gas medium cannot be enhanced, and the heat exchange between the two liquid media cannot be enhanced, in order to solve the problem, a first auxiliary heat exchange assembly 100 is additionally arranged in the heat exchanger, the first auxiliary heat exchange assembly 100 is formed by alternately splicing a plurality of first heat exchange plates 1 and a plurality of second heat exchange plates 2, the second heat exchange plates 2 are respectively spliced with the adjacent first heat exchange plates 1 through the left side and the right side, so that a first medium auxiliary heat exchange cavity 12 and a second medium heat exchange cavity 21 are respectively formed, the first medium auxiliary heat exchange cavity 12 is communicated with the first medium heat exchange cavity 13, so that the first medium and the second medium can exchange heat through mutual close contact of the first medium auxiliary heat exchange cavity 12 and the second medium heat exchange cavity 21, the heat exchange area of the first medium and the second medium is increased, so that the heat exchange area of the first medium and the second medium can be flexibly increased according to actual needs, and two heat exchange plates (the first heat exchange plate 1 and the second heat exchange plate 2) are additionally arranged at alternative and repeated intervals on the basis of the three heat exchange plates arranged at the original alternative and repeated intervals, so that the heat exchange device can be conveniently and flexibly adapted to the application occasions with larger heat exchange requirements of certain two media. Therefore, the invention provides a three-medium plate heat exchanger which effectively makes up the defects of the prior art, adopts a plurality of alternately spliced and stacked heat exchange plates to form heat exchange cavities (a first medium heat exchange cavity 13, a second medium heat exchange cavity 21 and a third medium heat exchange cavity 32, and can also comprise a first medium auxiliary heat exchange cavity 12 and a third medium auxiliary heat exchange cavity 31), can effectively avoid the problems of difficult connection, processing and the like of a micro-channel heat exchanger, can not only realize heat exchange between three media simultaneously, but also can additionally increase the heat exchange area between two fluid media so as to deal with the application occasions of the two fluid media when the heat exchange requirements are larger.
In addition, the heat exchange fins 4 are arranged in the third medium heat exchange cavity 32, so that the heat transfer effect on air can be effectively enhanced.
As a further supplement and improvement to this embodiment, as shown in fig. 4, the three-medium plate heat exchanger further includes at least one second auxiliary heat exchange assembly 200, the second auxiliary heat exchange assembly 200 is formed by alternately stacking a plurality of first heat exchange plates 1 and a plurality of third heat exchange plates 3, the third heat exchange plates 3 are respectively stacked with the adjacent first heat exchange plates 1 through opposite sides to form a third medium auxiliary heat exchange cavity 31 and a first medium heat exchange cavity 13, and heat exchange fins 4 for enhancing heat exchange at the air side are disposed in the third medium auxiliary heat exchange cavity 31.
Therefore, it can be understood that the air medium and the first medium can exchange heat through mutual close contact of the third medium auxiliary heat exchange cavity 31 and the first medium heat exchange cavity 13, so that the heat exchange area of the air medium and the first medium is increased, and thus the heat exchange area of the air medium and the first medium can be flexibly increased according to actual needs, and two heat exchange plates (the first heat exchange plate 1 and the third heat exchange plate 3) are additionally arranged at alternative and repeated intervals on the basis of the three heat exchange plates arranged at original alternative and repeated intervals, so as to conveniently and flexibly adapt to the application occasions with larger heat exchange requirements of certain two media.
As a further supplement and improvement to the present embodiment, referring to fig. 1 and 2, the three-medium plate heat exchanger further includes a first end plate 5 and a second end plate 6, where the first end plate 5 and the second end plate 6 are respectively located at two opposite ends of the three-medium plate heat exchanger and are respectively spliced with the first heat exchange plate 1, the second heat exchange plate 2, or the third heat exchange plate 3.
As a further supplement and improvement to the present embodiment, as shown in fig. 1 and fig. 2, each of the first heat exchange plate 1, the second heat exchange plate 2, the third heat exchange plate 3, and the first end plate 5 is provided with a first medium inlet a, a first medium outlet a, a second medium inlet B, and a second medium outlet B; secondly, the first medium inlets a are communicated with each other in series, and each first medium inlet a is communicated with each first medium heat exchange cavity 13 and first medium auxiliary heat exchange cavity 12, and similarly, each first medium outlet a is communicated with each first medium heat exchange cavity 13 and first medium auxiliary heat exchange cavity 12, and each first medium outlet a is communicated with each first medium heat exchange cavity 13 and first medium auxiliary heat exchange cavity 12, so that in operation, a first medium fluid flows into each first medium heat exchange cavity 13 and first medium auxiliary heat exchange cavity 12 from each first medium inlet a and flows to each first medium outlet a; thereby facilitating the circulating flow of the first medium within the heat exchanger. In addition, the second medium inlets B are communicated with each other in series, and each second medium inlet B is communicated with each second medium heat exchange cavity 21, similarly, the second medium outlets B are communicated with each other in series, and each second medium outlet B is communicated with each second medium heat exchange cavity 21, so that in operation, the second medium fluid flows into each second medium heat exchange cavity 21 from each second medium inlet B and flows to each second medium outlet B; thereby facilitating the circulating flow of the second medium within the heat exchanger.
As a further supplement and improvement to the present embodiment, as shown in fig. 2 and 5, a plurality of convex rings 7 are respectively formed on the surfaces of the first heat exchange plate 1, the second heat exchange plate 2 and the third heat exchange plate 3, each convex ring 7 respectively surrounds the edges of the first medium inlet a, the first medium outlet a, the second medium inlet B and the second medium outlet B, and the plurality of convex rings 7 include a closed ring 71 and an open ring 72; the closed ring 71 is closed, so that the medium cannot flow out through the side wall of the closed ring 71, and the side wall of the open ring 72 is provided with a notch, so that the medium can flow out through the notch on the side wall of the open ring 72. Specifically, two ends of each closing ring 71 are respectively and tightly pressed between the first heat exchange plate 1 and the second heat exchange plate 2, between the second heat exchange plate 2 and the third heat exchange plate 3, and between the third heat exchange plate 3 and the first heat exchange plate 1, so that the first medium heat exchange cavity 13, the second medium heat exchange cavity 21, and the third medium heat exchange cavity 32 can be separated from each other by the closing ring 71; in addition, by presetting the distribution of the split rings 72, the first medium inlets a, the first medium heat exchange cavities 13, the first medium auxiliary heat exchange cavities 12 and the first medium outlets a can be respectively communicated through the split rings 72; similarly, by presetting the distribution of the split rings 72, the second medium inlets B, the second medium heat exchange cavities 21 and the second medium outlets B can be communicated through the split rings 72 respectively.
As a further supplement and improvement to this embodiment, as shown in fig. 2 and fig. 5, the first medium heat exchange cavity 13, the second medium heat exchange cavity 21, and the first medium auxiliary heat exchange cavity 12 are understood through a plurality of corrugated grooves 8 arranged side by side, respectively, and the heat exchange area in the heat exchange cavities can be increased through each arranged corrugated groove 8, and simultaneously, fluid can be induced and disturbed to enhance the heat transfer effect.
Specifically, the first medium inlet a and the first medium outlet a may pass through the respective split rings 72 to respectively communicate the first medium heat exchange chamber 13 and the first medium auxiliary heat exchange chamber 12, facilitating smooth flow of the first medium. Similarly, the second medium inlet B and the second medium outlet B can also pass through the respective split rings 72 to respectively communicate with the second medium heat exchange chamber 21, so as to promote the smooth flow of the second medium.
As a further supplement and improvement to the present embodiment, the heat exchanging fin 4 is at least one of a flat fin, a corrugated fin, a louver-type fin, a wave-type fin, a spiral fin, and a strip-type fin.
As a further supplement and improvement to the present embodiment, the number of the heat exchange fins 4 is plural, and each of the heat exchange fins 4 is arranged on the third heat exchange plate 3 along the length direction of the third heat exchange plate 3.
As a further supplement and improvement to the present embodiment, the first heat exchange plate 1, the second heat exchange plate 2, and the third heat exchange plate 3 are connected by at least one of welding or bolt pressing.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. A three-medium plate heat exchanger is characterized by comprising a plurality of first heat exchange plates (1), a plurality of second heat exchange plates (2), a plurality of third heat exchange plates (3), a plurality of first medium heat exchange cavities (13) communicated with each other, a plurality of second medium heat exchange cavities (21) communicated with each other and a plurality of third medium heat exchange cavities (32), wherein the first heat exchange plates (1), the second heat exchange plates (2) and the third heat exchange plates (3) are sequentially and alternately spliced with each other, each second medium heat exchange cavity (21) is respectively formed between the first heat exchange plates (1) and the second heat exchange plates (2) which are spliced with each other, each first medium heat exchange cavity (13) is respectively formed between the first heat exchange plates (1) and the third heat exchange plates (3) which are spliced with each other, and each third medium heat exchange cavity (32) is respectively formed between the second heat exchange plates (2) and the third heat exchange plates (3) which are spliced with each other, and heat exchange fins (4) for enhancing air side heat exchange are arranged in the third medium heat exchange cavity (32), and the first medium heat exchange cavities (13) and the second medium heat exchange cavities (21) are respectively distributed on two opposite sides of the third medium heat exchange cavity (32).
2. A three-medium plate heat exchanger according to claim 1, further comprising at least one first auxiliary heat exchange assembly (100), wherein the first auxiliary heat exchange assembly (100) is formed by alternately stacking a plurality of first heat exchange plates (1) and a plurality of second heat exchange plates (2), the second heat exchange plates (2) are stacked with adjacent first heat exchange plates (1) by opposite sides to form a first medium auxiliary heat exchange chamber (12) and a second medium heat exchange chamber (21), respectively, and the first medium auxiliary heat exchange chamber (12) is communicated with the first medium heat exchange chamber (13).
3. A three-medium plate heat exchanger according to claim 2, further comprising at least one second auxiliary heat exchange assembly (200), wherein the second auxiliary heat exchange assembly (200) is formed by alternately stacking a plurality of first heat exchange plates (1) and a plurality of third heat exchange plates (3), the third heat exchange plates (3) are stacked with adjacent first heat exchange plates (1) by opposite sides to form a third medium auxiliary heat exchange cavity (31) and the first medium heat exchange cavity (13), respectively, and the heat exchange fins (4) for enhancing air-side heat exchange are disposed in the third medium auxiliary heat exchange cavity (31).
4. A three medium plate heat exchanger according to claim 3, further comprising a first end plate (5) and a second end plate (6), said first end plate (5) and second end plate (6) being located at opposite ends of the three medium plate heat exchanger, respectively, and being spliced to the first heat exchanger plate (1) or the second heat exchanger plate (2) or the third heat exchanger plate (3), respectively.
5. A three medium plate heat exchanger according to claim 4, wherein each of the first (1), second (2), third (3) and first end plate (5) is provided with a first medium inlet (A), a first medium outlet (a), a second medium inlet (B) and a second medium outlet (B);
the first medium inlets (A) are communicated with each other in series and are respectively communicated with the first medium heat exchange cavities (13) and the first medium auxiliary heat exchange cavities (12), the first medium outlets (a) are communicated with each other in series and are respectively communicated with the first medium heat exchange cavities (13) and the first medium auxiliary heat exchange cavities (12), and first medium flows into the first medium heat exchange cavities (13) and the first medium auxiliary heat exchange cavities (12) from the first medium inlets (A) and flows to the first medium outlets (a) respectively;
the second medium inlets (B) are communicated with each other in series and are respectively communicated with the second medium heat exchange cavities (21), the second medium outlets (B) are communicated with each other in series and are respectively communicated with the second medium heat exchange cavities (21), and second medium flows into the second medium heat exchange cavities (21) from the second medium inlets (B) and flows to the second medium outlets (B).
6. A three medium plate heat exchanger according to claim 5, characterized in that the surfaces of the first (1), second (2) and third (3) heat exchanger plates are formed with a number of collars (7), respectively, each collar (7) surrounding the edges of the first (A), first (a), second (B) and second (B) medium inlets, respectively, and that the number of collars (7) comprises a closed ring (71) and an open ring (72);
the first medium heat exchange cavity (13), the second medium heat exchange cavity (21) and the third medium heat exchange cavity (32) are mutually separated through the closed ring (71);
each first medium inlet (A), each first medium heat exchange cavity (13), each first medium auxiliary heat exchange cavity (12) and each first medium outlet (a) are communicated through each split ring (72);
the second medium inlet (B), the second medium heat exchange cavity (21) and the second medium outlet (B) are communicated through the split ring (72).
7. A three medium plate heat exchanger according to claim 6, characterized in that the first medium heat exchange chamber (13), the second medium heat exchange chamber (21) and the first medium auxiliary heat exchange chamber (12) are formed by a number of corrugated grooves (8) arranged side by side, respectively.
8. A three medium plate heat exchanger according to any of claims 1-7, wherein the heat exchanging fins (4) are at least one of flat fins, corrugated fins, louvered fins, corrugated fins, spiral fins, strip fins.
9. A three medium plate heat exchanger according to claim 8, wherein the number of heat exchanging fins (4) is plural, and each of the heat exchanging fins (4) is arranged on the third heat exchanging plate (3) along the length direction of the third heat exchanging plate (3).
10. A three medium plate heat exchanger according to any of claims 1-7, wherein the first heat exchanger plate (1), the second heat exchanger plate (2) and the third heat exchanger plate (3) are connected by at least one of welding or bolt pressing.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111372430.2A CN114136127A (en) | 2021-11-18 | 2021-11-18 | Three-medium plate heat exchanger |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111372430.2A CN114136127A (en) | 2021-11-18 | 2021-11-18 | Three-medium plate heat exchanger |
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| CN114136127A true CN114136127A (en) | 2022-03-04 |
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| CN202111372430.2A Pending CN114136127A (en) | 2021-11-18 | 2021-11-18 | Three-medium plate heat exchanger |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116417708A (en) * | 2023-03-15 | 2023-07-11 | 广州汽车集团股份有限公司 | Heat exchanging device |
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| CN113606961A (en) * | 2021-07-22 | 2021-11-05 | 清华大学 | Three-medium heat exchanger with auxiliary heat exchange structure |
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| EP0819907A2 (en) * | 1996-07-16 | 1998-01-21 | Längerer & Reich GmbH | Plate heat exchanger |
| CN104896978A (en) * | 2015-05-15 | 2015-09-09 | 兰州兰石集团有限公司 | Novel triple-medium composite heat exchanger |
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Application publication date: 20220304 |