CN106871673A - Novel flow channel plate-fin heat exchanger - Google Patents
Novel flow channel plate-fin heat exchanger Download PDFInfo
- Publication number
- CN106871673A CN106871673A CN201510914918.1A CN201510914918A CN106871673A CN 106871673 A CN106871673 A CN 106871673A CN 201510914918 A CN201510914918 A CN 201510914918A CN 106871673 A CN106871673 A CN 106871673A
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- Prior art keywords
- fin
- heat exchanger
- plate
- flow
- flow channel
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Classifications
-
- 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
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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
- F28F13/00—Arrangements for modifying heat-transfer, e.g. increasing, decreasing
- F28F13/06—Arrangements for modifying heat-transfer, e.g. increasing, decreasing by affecting the pattern of flow of the heat-exchange media
- F28F13/08—Arrangements for modifying heat-transfer, e.g. increasing, decreasing by affecting the pattern of flow of the heat-exchange media by varying the cross-section of the flow channels
Abstract
Novel flow channel plate-fin heat exchanger, it uses novel flow channel, mainly include fin, dividing plate, flow deflector, each unit is welded together by vacuum brazing technique, and the fin pattern in heat exchanging segment mainly uses Novel fin, to cause plate-fin heat exchanger internal flow pressure throughout bigger than conventional flow field structure, it is higher than traditional structure to improve fluid turbulent performance and turbulence dissipation rate, using novel flow channel structure in novel flow channel structure；Due to the change of flow passage structure, the turbulence dissipation rate of fluid obtains very strong reinforcing effect in runner, and compared to conventional flow field structure, inlet turbulence dissipative shock wave average value increases 8.1 times, and turbulence dissipation rate is significantly increased at other positions, and radiating effect lifting is notable.
Description
Technical field
The invention belongs to technical field of heat exchangers, more particularly, to a kind of plate-fin heat exchanger.
Background technology
Plate-fin heat exchanger is generally made up of dividing plate, fin, strip of paper used for sealing, flow deflector.Fin, flow deflector and strip of paper used for sealing are placed between adjacent two dividing plate and constitutes an interlayer, referred to as passage, such interlayer is stacked according to the different modes of fluid, the integral just composing plate beam of soldering, plate beam is the core of plate-fin heat exchanger.Plate-fin heat exchanger is had the advantages that compact conformation, specific surface area are big, heat transfer efficiency is high, can be exchanged heat with multiple flow and secondary heat transfer, because increasingly obtaining the extensive concern of domestic and international experts and scholars herein.Fin as plate-fin heat exchanger main heat exchange unit, heat transfer of the flow passage structure pattern formed by fin to whole heat exchanger play a key effect.Due to the flake that the fin structure for constituting plate-fin heat exchanger runner is elongated, in order to the heat transfer effect for lifting heat exchanger needs to be improved traditional fin structure, although but be only improved the heat exchange amount that can lift heat exchanger to a certain extent from thickness, height and the aspect of increase heat exchanger flow channel length three, the heat exchanger after improvement causes it to be unfavorable for transporting and install due to reasons such as bulky, heavier-weights.
Current domestic and foreign scholars are concentrated mainly on the aspects such as heat exchanger overall performance structure, fin structure and flow of fluid for the research of heat exchanger performance, research in terms of on plate-fin heat exchanger flow passage structure influence heat exchanger performance is less, and heat transfer of the flow passage structure to whole heat exchanger fluid flow inside and heat exchanger plays an important roll.Flow passage structure pattern influences the type of flow of fluid, can increase fluid turbulent effect in heat exchanger, promotes heat exchange in heat exchanger, meanwhile, pressure can also change therewith in heat exchanger.Therefore a kind of rational flow passage structure is designed, the mobility status and heat-transfer effect of fluid are one of difficulties of current research in lifting heat exchanger.Domestic and foreign scholars correlative study content is used for reference herein, designs a kind of new plate-fin heat exchanger flow passage structure form, and analyze flow of fluid influence in the novel flow channel structure heat exchanging device.
The content of the invention
In order to improve the turbulent flow performance of flow of fluid in existing plate-fin heat exchanger, improve heat exchanger heat exchange actual effect, plate-fin heat exchanger flow passage structure is improved in the present invention, and cause that flow of fluid changes in heat exchanger, using a kind of new plate-fin heat exchanger flow passage structure, the novel flow channel structure can change the flow direction of fluid in heat exchanger runner, fluid is promoted to be flowed in M shapes inside plate-fin heat exchanger, so as to extend the flow distance of fluid in heat exchanger, increase the turbulent flow performance of fluid, the heat transfer effect of enhanced heat exchange device.
The technical solution adopted for the present invention to solve the technical problems is：On the basis of the flow passage structure formed with reference to conventional panels wing heat exchanger fin, the present invention proposes a kind of improved plate-fin heat exchanger flow passage structure, fin pattern in the flow passage structure uses new-type fin, fin is combined into a kind of M shapes flow passage structure and replaces traditional straight channel, the novel flow channel structural change flow direction of fluid, the turbulent flow performance of flow of fluid, extends heat transfer distances in increase heat exchanger, reaches the purpose of lifting plate-fin heat exchanger transfer efficiency.The amount asked that cold fluid and hot fluid is carried out in heat exchanging segment is exchanged, and the heat transfer property of this section of flow passage structure heat exchanging device plays very important influence.
The improved fins of are improved to plain fin can optimize the heat-transfer effect of plain fin, and the processing technology and technology significantly lifted in heat output, and this follow-on fin modern industry can be produced in batches to it, finally obtain practical benefit.Fin with vortex generator is except vortex generator is in addition to different from script fin, and other such as fin height, fin intercepts are all identical with plain fin.
The beneficial effects of the invention are as follows, using novel flow channel structure after, increased heat exchanger internal pressure value, but the novel flow channel structure can be obviously improved the turbulent flow performance and turbulence dissipation rate of fluid simultaneously；Flow passage structure has the trend that the tubulence energy presentation of fluid in effect this plate-fin heat exchanger novel flow channel of increase fluid turbulent intensity gradually increases in itself；Due to the change of flow passage structure, the turbulence dissipation rate of fluid obtains very strong reinforcing effect in runner, and compared to conventional flow field structure, inlet turbulence dissipative shock wave average value increases 8.1 times, and turbulence dissipation rate is significantly increased at other positions.
Brief description of the drawings
The present invention is further described with reference to the accompanying drawings and examples.
Fig. 1 is that plate-fin heat exchanger flows to schematic diagram.
Fig. 2 is schematic of fluid flow under novel flow channel structure.
1. entrance in Fig. 1,2. heat exchanging segment, 3. diversion section.
Specific embodiment
Preferably, plate-fin heat exchanger unit mainly includes fin, dividing plate, flow deflector etc., and each unit is welded together by vacuum brazing technique, and fluid flows in the runner that fin is formed.
In Fig. 1, plate-fin heat exchanger unit mainly includes fin, dividing plate, and the original fin pattern in heat exchanging segment after each unit is welded together by vacuum brazing technique, is replaced by Novel fin, and change without flow passage structure in this heat exchanging segment by flow deflector.
Preferably, on this basis, using a kind of novel flow channel three-dimensional structure, as shown in Figure 2.
In fig. 2, novel flow channel three-dimensional structure is as shown in FIG., in order to increase the turbulent flow performance of flow of fluid in heat exchanger, extension heat transfer distances, lifting plate-fin heat exchanger transfer efficiency is reached, the fin pattern in the flow passage structure is combined into a kind of M shapes flow passage structure using new-type fin, and traditional straight channel is replaced with this structure, change the flow direction of fluid, the turbulent flow performance of flow of fluid in increase heat exchanger.
Preferably, the processing technology and technology that optimization plain fin is significantly lifted in heat output, and this follow-on fin modern industry can be produced in batches to it.
Preferably, for new plate-fin heat exchanger flow passage structure, the fin to plate-fin heat exchanger is improved, and Novel fin can be by being stamped and formed out, and the Novel fin after punching press forms a vortex generator perpendicular to plate face.
Preferably, after novel flow channel structure, plate-fin heat exchanger internal flow pressure throughout is bigger, pressure values at novel flow channel structure kind portion of runner are higher than conventional flow field structure 2 times, but higher than traditional structure with the fluid turbulent performance and turbulence dissipation rate of pressure values corresponding points nearly 10 times.
Preferably, for novel flow channel structure, with the flowing of fluid, flow passage structure has the effect of increase fluid turbulent intensity in itself, therefore the tubulence energy of fluid is presented the trend for gradually increasing in plate-fin heat exchanger novel flow channel.
Preferably, runner inner fin structure type is plain fin, and fin width is 2 mm, and fin height is 5 mm, and fin thickness is 0.2
Mm, spacing of fin is 0.5 mm, and fin material is 300-O
Type aluminium.
Preferably, the modified fin with vortex generator, by the effect of vortex generator, makes flow media produce strong disturbance, and constantly breakdown speed boundary layer and temperature boundary layer, makes heat convection stronger, has reached the purpose of enhanced heat exchange.
Claims (5)
1. new plate-fin heat exchanger, is made up of dividing plate, fin, strip of paper used for sealing, flow deflector, fin, flow deflector and strip of paper used for sealing is placed between adjacent two dividing plate and constitutes an interlayer, referred to as passage, such interlayer is stacked according to the different modes of fluid, the integral just composing plate beam of soldering, it is characterized in that：The plate-fin heat exchanger uses novel flow channel, and the fin pattern in the flow passage structure is combined into a kind of M shapes flow passage structure using new-type fin, and traditional straight channel is replaced with this structure.
2. plate-fin heat exchanger according to claim 1, it is characterized in that：Each unit is welded together by vacuum brazing technique.
3. plate-fin heat exchanger according to claim 1, it is characterized in that：In order to increase the turbulent flow performance of flow of fluid in heat exchanger, extend heat transfer distances, reach lifting plate-fin heat exchanger transfer efficiency, new-type fin is combined into a kind of M shapes flow passage structure.
4. plate-fin heat exchanger according to claim 1, it is characterized in that：Runner inner fin structure type is plain fin, and fin width is
2 mm, fin height is 5 mm, and fin thickness is 0.2 mm, and spacing of fin is 0.5 mm.
5. plate-fin heat exchanger according to claim 1, it is characterized in that：Fin material selects 300-O type aluminiums.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510914918.1A CN106871673A (en) | 2015-12-13 | 2015-12-13 | Novel flow channel plate-fin heat exchanger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510914918.1A CN106871673A (en) | 2015-12-13 | 2015-12-13 | Novel flow channel plate-fin heat exchanger |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106871673A true CN106871673A (en) | 2017-06-20 |
Family
ID=59238152
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510914918.1A Pending CN106871673A (en) | 2015-12-13 | 2015-12-13 | Novel flow channel plate-fin heat exchanger |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106871673A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112944306A (en) * | 2019-12-11 | 2021-06-11 | 中国科学院大连化学物理研究所 | Water vaporizer structure |
-
2015
- 2015-12-13 CN CN201510914918.1A patent/CN106871673A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112944306A (en) * | 2019-12-11 | 2021-06-11 | 中国科学院大连化学物理研究所 | Water vaporizer structure |
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Legal Events
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| PB01 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20170620 |