CN104110996A - Mixed type fin for plate-fin heat exchanger - Google Patents
Mixed type fin for plate-fin heat exchanger Download PDFInfo
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- CN104110996A CN104110996A CN201410364670.1A CN201410364670A CN104110996A CN 104110996 A CN104110996 A CN 104110996A CN 201410364670 A CN201410364670 A CN 201410364670A CN 104110996 A CN104110996 A CN 104110996A
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Abstract
The invention discloses a mixed type fin for a plate-fin heat exchanger, and belongs to the technical field of heat exchangers. The mixed type fin for the plate-fin heat exchanger is formed by periodically extending and arranging basic heat exchange units along the flow direction of fluid, wherein each basic heat exchange unit comprises serrated fins and perforated fins, the serrated fins and the perforated fins are arranged on each basic heat exchange unit in staggered mode and at intervals, the thicknesses and the heights of the serrated fins and the perforated fins are respectively equal, and opening rate of through holes in each perforated fin is 5%-10%. According to the mixed type fin for the plate-fin heat exchanger, a mode of arranging the serrated fins and the perforated fins in staggered mode and at intervals so as to form certain angles is adopted, multiple phase fluids can be evenly distributed well by using shunting characteristics of the perforated fins, and good heat exchange performance of a heat exchange channel is guaranteed by using the perforated fins.
Description
Technical field
The invention belongs to technical field of heat exchangers, be specifically related to a kind of mixed type fin for plate-fin heat exchanger.
Background technology
Plate-fin heat exchanger is the general heat transmission equipment of one that is widely used at present the industries such as petrochemical industry, power, medicine, metallurgy, refrigeration, food, light industry.Plate-fin heat exchanger has high specific area, large NTU (number of transfer units) and efficient heat-transfer character, its outstanding advantages is compact conformation, is convenient to multiple flow layout, the little temperature difference and large temperature drop heat exchange, is especially applicable to the both sides coefficient of heat transfer and differs occasion larger and runner complicated layout.The principal element that affects plate-fin heat exchanger performance comprises the heat transfer of different fin surfaces and flow behavior, channel arrangement and flow distribution, temperature field distribution, material behavior etc.Common fin surface has plain fin, saw tooth fin, corrugated fin, louvered fin etc., different fin collocation have different heat transfer characteristics, flow distribution non-uniform phenomenon be present in all kinds of flow with heat transmission equipment among, particularly in heat exchanger and chemical reactor, owing to existing the exchange process of heat and quality in such industrial equipment, inhomogeneous will directly impact that fluid distributes conducted heat and mass transport process, has a strong impact on heat exchanger efficiency, patent of invention 201010562536.4 relates to a kind of mixed type sawtooth stagger arrangement fin for plate-fin heat exchanger, different according to fluid and fin rib surface relative direction, mutually perpendicular Z-type fin and H type fin are combined mutually, utilization advantage separately can reach the effect of mutual supplement with each other's advantages, there is good heat exchange property and suitable pressure drop, but for heterogeneous fluid heat transfer process, phase transition process may exist with whole heat exchange process in, if just adopt dissimilar serrated fin, probably there is the phenomenon of fluid skewness in flow process, and then affect the carrying out of heat transfer process.For containing in the fluid heat transfer process of phase transformation, in order to reach better heat transfer effect, general heat exchanger adopts additional joint that fluid is introduced to gas-liquid separator to carry out taking back heat exchanger heat exchange after gas-liquid separation again, make like this heat exchange in different heat exchanger channels of out of phase fluid, reach the object of enhanced heat exchange, but this way can additionally increase heat exchanger volume, and has increased difficulty to runner in design of heat exchanger and arranging of fin.
Summary of the invention
The defect existing in order to overcome above-mentioned prior art, the object of the present invention is to provide a kind of mixed type fin for plate-fin heat exchanger, this mixing fin can play the effect that the balanced various flows phase fluid of enhanced heat exchange distributes in the process of Multiphase Flow heat exchange.
The present invention is achieved through the following technical solutions:
For a mixed type fin for plate-fin heat exchanger, arrange and form along the extension of fluid flow direction periodicity by basic heat exchange unit; Described basic heat exchange unit comprises serrated fin and perforated fin, and serrated fin and perforated fin are staggered to be intervally arranged, serrated fin and the thickness of perforated fin and highly all identical, and on perforated fin, the percent opening of through hole is 5%～10%.
In described serrated fin and perforated fin, the angle of fluid flow direction is 30 °～60 °.
Described serrated fin is Z-type serrated fin.
The tooth pitch of described Z-type serrated fin is identical, and the Z-type serrated fin spacing that staggers is more than or equal to tooth pitch.
The tooth pitch of described perforated fin is more than or equal to the tooth pitch of Z-type serrated fin.
The length of described perforated fin is more than or equal to the spacing that staggers of Z-type serrated fin.
Described serrated fin and perforated fin are by one time punching molded.
The material of described serrated fin and perforated fin is aluminium sheet or steel plate.
Compared with prior art, the present invention has following useful technique effect:
The present invention adopts serrated fin and the perforated fin staggered form being intervally arranged at a certain angle, utilize the bifurcated characteristic of perforated fin better can evenly arrange for heterogeneous fluid, and utilize perforated fin under different interval combination, to ensure that heat exchange runner has good heat exchange property, ensure that runner pressure drop maintains under design level.By being intervally arranged of two kinds of fin types, can make to flow to gas phase in the fluid of perforated fin occurs laterally to mix with liquid phase fluid, and then heterogeneous fluid in different runners can evenly mix, now, the less gaseous fluid of density is the top at runner by branch, the liquid phase fluid that density is larger will be distributed in the middle and lower part of runner, then the serrated fin of flowing through carries out enhanced heat exchange, the gas-liquid mixture fluid producing laterally mixes by perforated fin again, so in whole process fluid flow, gas-liquid two-phase has obvious distribution all the time, thereby make whole plate-fin heat exchanger there is good heat transfer effect.
Further, in serrated fin of the present invention and perforated fin, the angle of fluid flow direction is 30 °～60 °, this design is mainly in order to be combined with phase change fluid flowing in perforated fin, after finishing, fluid heat exchange in passage can undergo phase transition, meeting doping gaseous fluid in liquid phase, the flow direction of fluid in porous type fin and serrated fin at a certain angle staggers, can impel the cross flow one of fluid in different runners, liquid phase fluid in this process in passage and gaseous fluid can obtain distributing more uniformly, obtain better heat transfer effect.
Further, serrated fin of the present invention is Z-type saw tooth fin, and the tooth pitch of Z-type serrated fin is identical, and the Z-type serrated fin spacing that staggers is more than or equal to tooth pitch, and the tooth pitch of perforated fin is more than or equal to the tooth pitch of Z-type serrated fin; Such design can reduce pressure drop as much as possible, improves heat exchange property.
Brief description of the drawings
Fig. 1 is the stereogram of the plate-fin heat exchanger mixed type fin structure of the embodiment of the present invention 1;
Fig. 2 is the top view of the plate-fin heat exchanger mixed type fin structure of the embodiment of the present invention 1;
Fig. 3 is the top view of the embodiment of the present invention 1 plate-fin heat exchanger mixed type fin structure preferably;
Fig. 4 is the top view of the plate-fin heat exchanger mixed type fin structure of the embodiment of the present invention 2;
Fig. 5 is the cutaway view of the plate-fin heat exchanger mixed type fin structure of the embodiment of the present invention 2.
Wherein, 1 is serrated fin; 2 is perforated fin.
Detailed description of the invention
Below in conjunction with specific embodiment, the present invention is described in further detail, and the explanation of the invention is not limited.
Embodiment 1
Referring to Fig. 1～2, a kind of mixed type fin for plate-fin heat exchanger, is arranged and forms along the extension of fluid flow direction periodicity by basic heat exchange unit; Described basic heat exchange unit comprises two groups of serrated fins 1 and one group of perforated fin 2, serrated fin 1 and perforated fin 2 interlock and are intervally arranged, serrated fin 1 and the thickness of perforated fin 2 and highly all identical, serrated fin 1 is same with tooth pitch and the identical length of perforated fin 2, and on perforated fin 2, the percent opening of through hole is 5%～10%.Serrated fin 1 and perforated fin 2 all adopt aluminium sheet or steel plate materials punching press one-shot forming.
The feature of this group combination is to be suitable for having phase-change heat-exchange and requiring the occasion that Pressure Drop is lower, when have relatively high expectations heat exchange amount time, effective length that can proper extension serrated fin, in the time that in heat transfer process, fluid phase change component is more, can suitably increase the effective length of perforated fin, and improve punching rate.Wherein, perforated fin is that perforate obtains on the basis of plain fin, and different aperture, percent opening and hole site distribute and can reach different flow effects, near fluid is flowed through aperture time, will produce laterally and mix, cause the unexpected variation of periphery flow velocity, thereby form air-flow whirlpool and lift-off motion
Preferably, referring to Fig. 3, d represents the tooth pitch of serrated fin 1, and h represents serrated fin 1 stagger spacing, h >=d;
D represents the tooth pitch of perforated fin 2, and H represents the length of perforated fin 2, H >=h, D >=d;
Such design can reduce pressure drop as much as possible, increases fluid-flow rate, improves heat exchange property.
Embodiment 2
Referring to Fig. 4～5, be two groups of serrated fins 1 and one group of perforated fin 2 elementary cell with certain staggered composition of angle, can periodically extend along fluid flow direction, on perforated fin 2, the percent opening of through hole is 5%～10%; The angle of perforated fin 2 fluid flow directions and serrated fin 1 fluid flow direction be 30 degree to 60 degree, serrated fin 1 and perforated fin 2 all adopt aluminium sheet or steel plate materials punching press one-shot forming.The design of angle is mainly in order to be combined with phase change fluid flowing in perforated fin.After finishing, fluid heat exchange in passage can undergo phase transition, meeting doping gaseous fluid in liquid phase, the flow direction of fluid in porous type fin 2 and serrated fin 1 at a certain angle staggers, can impel the cross flow one of fluid in different runners, liquid phase fluid in this process in passage and gaseous fluid can obtain distributing more uniformly, obtain better heat transfer effect.This group combination is suitable for the occasion that has phase-change heat-exchange and require enhanced heat exchange effect.
Claims (8)
1. for a mixed type fin for plate-fin heat exchanger, it is characterized in that, arrange and form along the extension of fluid flow direction periodicity by basic heat exchange unit; Described basic heat exchange unit comprises serrated fin (1) and perforated fin (2), serrated fin (1) and perforated fin (2) are staggered to be intervally arranged, the thickness of serrated fin (1) and perforated fin (2) and highly all identical, and the percent opening of the upper through hole of perforated fin (2) is 5%～10%.
2. a kind of mixed type fin for plate-fin heat exchanger according to claim 1, is characterized in that, described serrated fin (1) is 30 °～60 ° with the angle of the middle fluid flow direction of perforated fin (2).
3. a kind of mixed type fin for plate-fin heat exchanger according to claim 1, is characterized in that, described serrated fin (1) is Z-type serrated fin.
4. a kind of mixed type fin for plate-fin heat exchanger according to claim 3, is characterized in that, the tooth pitch of described Z-type serrated fin is identical, and the Z-type serrated fin spacing that staggers is more than or equal to tooth pitch.
5. a kind of mixed type fin for plate-fin heat exchanger according to claim 3, is characterized in that, the tooth pitch of described perforated fin (2) is more than or equal to the tooth pitch of Z-type serrated fin.
6. a kind of mixed type fin for plate-fin heat exchanger according to claim 3, is characterized in that, the length of described perforated fin (2) is more than or equal to the spacing that staggers of Z-type serrated fin.
7. according to a kind of mixed type fin for plate-fin heat exchanger described in any one in claim 1～6, it is characterized in that, described serrated fin (1) and perforated fin (2) are by one time punching molded.
8. a kind of mixed type fin for plate-fin heat exchanger according to claim 7, is characterized in that, the material of described serrated fin (1) and perforated fin (2) is aluminium sheet or steel plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410364670.1A CN104110996A (en) | 2014-07-28 | 2014-07-28 | Mixed type fin for plate-fin heat exchanger |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410364670.1A CN104110996A (en) | 2014-07-28 | 2014-07-28 | Mixed type fin for plate-fin heat exchanger |
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| CN104110996A true CN104110996A (en) | 2014-10-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410364670.1A Pending CN104110996A (en) | 2014-07-28 | 2014-07-28 | Mixed type fin for plate-fin heat exchanger |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104390508A (en) * | 2014-11-05 | 2015-03-04 | 中国船舶重工集团公司第七�三研究所 | Porous wavy fin template fin heat exchanger |
| CN104390506A (en) * | 2014-11-05 | 2015-03-04 | 中国船舶重工集团公司第七�三研究所 | Sawtooth porous type plate-fin heat exchanger |
| CN108106469A (en) * | 2018-01-26 | 2018-06-01 | 上海交通大学 | A kind of plate-fin heat exchanger fin component and heat exchanger for being suitable for rocking operating mode |
| CN109357474A (en) * | 2018-11-19 | 2019-02-19 | 襄阳航力机电技术发展有限公司 | Plate-fin blood plasma quick freezer cold plate |
| CN110736364A (en) * | 2018-07-18 | 2020-01-31 | 本田技研工业株式会社 | Heat exchanger |
| CN114264185A (en) * | 2021-11-09 | 2022-04-01 | 河北宇天材料科技有限公司 | Intensive micropore heat exchanger fin |
| CN116147385A (en) * | 2022-12-14 | 2023-05-23 | 无锡市耀鹏换热设备有限公司 | Staggered zigzag plate-fin heat exchanger and preparation process thereof |
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| EP0053452A2 (en) * | 1980-12-02 | 1982-06-09 | Marston Palmer Ltd. | Heat exchanger |
| JPS61262593A (en) * | 1985-05-15 | 1986-11-20 | Showa Alum Corp | Heat exchanger |
| CN86107019A (en) * | 1985-10-14 | 1987-04-08 | 三菱电机株式会社 | Heat-exchange device |
| EP1028461A1 (en) * | 1994-10-03 | 2000-08-16 | Sumitomo Metal Industries, Ltd. | Heat sink fin assembly for cooling an LSI package |
| CN102032830A (en) * | 2010-11-27 | 2011-04-27 | 浙江银轮机械股份有限公司 | Mixed type sawtooth staggered fin used for fin heat exchanger |
| CN103119388A (en) * | 2010-09-29 | 2013-05-22 | 气体产品与化学公司 | Heat exchanger perforated fins |
| CN103389001A (en) * | 2013-07-29 | 2013-11-13 | 无锡方盛换热器制造有限公司 | Fin structure for heat exchangers |
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2014
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Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0053452A2 (en) * | 1980-12-02 | 1982-06-09 | Marston Palmer Ltd. | Heat exchanger |
| JPS61262593A (en) * | 1985-05-15 | 1986-11-20 | Showa Alum Corp | Heat exchanger |
| CN86107019A (en) * | 1985-10-14 | 1987-04-08 | 三菱电机株式会社 | Heat-exchange device |
| EP1028461A1 (en) * | 1994-10-03 | 2000-08-16 | Sumitomo Metal Industries, Ltd. | Heat sink fin assembly for cooling an LSI package |
| CN103119388A (en) * | 2010-09-29 | 2013-05-22 | 气体产品与化学公司 | Heat exchanger perforated fins |
| CN102032830A (en) * | 2010-11-27 | 2011-04-27 | 浙江银轮机械股份有限公司 | Mixed type sawtooth staggered fin used for fin heat exchanger |
| CN103389001A (en) * | 2013-07-29 | 2013-11-13 | 无锡方盛换热器制造有限公司 | Fin structure for heat exchangers |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104390508A (en) * | 2014-11-05 | 2015-03-04 | 中国船舶重工集团公司第七�三研究所 | Porous wavy fin template fin heat exchanger |
| CN104390506A (en) * | 2014-11-05 | 2015-03-04 | 中国船舶重工集团公司第七�三研究所 | Sawtooth porous type plate-fin heat exchanger |
| CN108106469A (en) * | 2018-01-26 | 2018-06-01 | 上海交通大学 | A kind of plate-fin heat exchanger fin component and heat exchanger for being suitable for rocking operating mode |
| CN108106469B (en) * | 2018-01-26 | 2023-08-25 | 上海交通大学 | Plate-fin heat exchanger fin assembly suitable for shaking working condition and heat exchanger |
| CN110736364A (en) * | 2018-07-18 | 2020-01-31 | 本田技研工业株式会社 | Heat exchanger |
| CN110736364B (en) * | 2018-07-18 | 2021-09-28 | 本田技研工业株式会社 | Heat exchanger |
| CN109357474A (en) * | 2018-11-19 | 2019-02-19 | 襄阳航力机电技术发展有限公司 | Plate-fin blood plasma quick freezer cold plate |
| CN114264185A (en) * | 2021-11-09 | 2022-04-01 | 河北宇天材料科技有限公司 | Intensive micropore heat exchanger fin |
| CN116147385A (en) * | 2022-12-14 | 2023-05-23 | 无锡市耀鹏换热设备有限公司 | Staggered zigzag plate-fin heat exchanger and preparation process thereof |
| CN116147385B (en) * | 2022-12-14 | 2024-04-12 | 无锡市耀鹏换热设备有限公司 | Staggered zigzag plate-fin heat exchanger and preparation process thereof |
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Application publication date: 20141022 |