CN114877727A - Plate heat exchanger based on Karman vortex street effect - Google Patents
Plate heat exchanger based on Karman vortex street effect Download PDFInfo
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- CN114877727A CN114877727A CN202210453055.2A CN202210453055A CN114877727A CN 114877727 A CN114877727 A CN 114877727A CN 202210453055 A CN202210453055 A CN 202210453055A CN 114877727 A CN114877727 A CN 114877727A
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- wing
- plate fin
- plate
- heat exchanger
- shaped plate
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- 230000000694 effects Effects 0.000 title claims abstract description 15
- 230000007246 mechanism Effects 0.000 claims abstract description 14
- 238000004804 winding Methods 0.000 claims description 8
- 230000009286 beneficial effect Effects 0.000 abstract description 4
- 238000009826 distribution Methods 0.000 abstract description 3
- 230000007547 defect Effects 0.000 abstract description 2
- 239000012530 fluid Substances 0.000 description 6
- 230000009471 action Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000010348 incorporation Methods 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 230000002269 spontaneous effect Effects 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Images
Classifications
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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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F3/00—Plate-like or laminated elements; Assemblies of plate-like or laminated elements
- F28F3/02—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations
- F28F3/06—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations the means being attachable to the element
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F2215/00—Fins
- F28F2215/14—Fins in the form of movable or loose fins
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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)
- Other Air-Conditioning Systems (AREA)
Abstract
The utility model provides a plate heat exchanger based on karman vortex street effect, includes the box, is equipped with heat transfer mechanism in the box, and heat transfer mechanism includes the aerofoil plate wing, and the aerofoil plate wing is connected with the box through convolution spring, is equipped with on the aerofoil plate wing and winds the passageway, winds the inlet hole of passageway and is located aerofoil plate wing front end, winds the lateral part that the passageway of leaving a hole is located aerofoil plate wing. The heat exchange mechanism further comprises a turbulence column, and the turbulence column is located at the front end of the wing-shaped plate fin. Aiming at the defects of the prior art, the invention is beneficial to reducing the pressure at the front end of the wing-shaped plate fin, and the flow-around channel guides the pressure difference to one side of the wing-shaped plate fin so as to break the symmetrical balance at the two ends and make the wing-shaped plate fin swing; the original pressure distribution rule is changed by swinging a certain angle, so that the pressure difference between the front end and the rear end of the wing-shaped plate fin disappears.
Description
Technical Field
The invention belongs to the field of plate heat exchangers, and particularly relates to a plate heat exchanger based on a karman vortex street effect.
Background
Plate heat exchangers are widely used in chemical, petroleum, refrigeration, nuclear and power industries, and due to the worldwide energy crisis, the demand for heat exchangers in industrial production is increasing and the quality requirements for heat exchangers are also increasing in order to reduce energy consumption. In recent decades, compact heat exchangers (plate, plate fin, pressure welded plate, etc.), heat pipe heat exchangers, direct contact heat exchangers, etc. have been rapidly developed.
The existing plate-fin heat exchanger (such as one disclosed in chinese patent document CN 111735328A) has the following disadvantages: when the fluid flows to the shoulders of the corrugated fins, a large local pressure loss (and a local high pressure) is generated, which may cause deformation or damage of the plate heat exchanger.
Disclosure of Invention
In view of the technical problems in the background art, the plate heat exchanger based on the karman vortex street effect provided by the invention is beneficial to reducing the pressure at the front end of the wing-shaped plate fin, and the pressure difference is guided to one side of the wing-shaped plate fin by the flow winding channel to break the symmetrical balance at the two ends so as to lead the wing-shaped plate fin to swing; the original pressure distribution rule is changed by swinging a certain angle, so that the pressure difference between the front end and the rear end of the wing-shaped plate fin disappears.
In order to solve the technical problems, the invention adopts the following technical scheme to realize:
the utility model provides a plate heat exchanger based on karman vortex street effect, includes the box, is equipped with heat transfer mechanism in the box, and heat transfer mechanism includes the aerofoil plate wing, and the aerofoil plate wing is connected with the box through convolution spring, is equipped with on the aerofoil plate wing and winds the passageway, winds the inlet hole of passageway and is located aerofoil plate wing front end, winds the lateral part that the passageway of leaving a hole is located aerofoil plate wing.
In a preferable scheme, the heat exchange mechanism further comprises a turbulence column, and the turbulence column is located at the front end of the wing-shaped plate fin.
In a preferred scheme, the front end of each wing-shaped plate fin is provided with a groove, an inlet hole of each flow-winding channel is positioned at the groove, and each flow-disturbing column is positioned at the front end of the groove; the bypass channel is L-shaped or arc-shaped.
In the preferred scheme, the turbulence column is cylindrical, the groove is semicircular, and the radius of the groove is the same as that of the turbulence column.
In a preferred scheme, the convolution spring is embedded in the side part of the wing of the airfoil plate.
This patent can reach following beneficial effect:
1. aiming at the defects of the prior art, the invention is beneficial to reducing the pressure at the front end of the wing-shaped plate fin, and the two-end symmetrical balance can be broken by guiding the pressure difference to one side of the wing-shaped plate fin through the flow surrounding channel, so that the wing-shaped plate fin swings; the original pressure distribution rule is changed by swinging a certain angle, so that the pressure difference between the front end and the rear end of the wing-shaped plate fin disappears.
1. The invention adds the turbulence column and the wing-shaped plate fin with the flow-around channel into the heat exchanger, thereby effectively improving the overall heat exchange efficiency of the heat exchanger. The turbulence column is fixed in front of a groove at the front end of an airfoil plate fin with a turbulence channel, and the turbulence property of gas is increased and the heat exchange efficiency is increased by utilizing the Karman vortex street effect.
2. Under the action of fluid, the wing-shaped plate fin with the flow-around channel swings downwards, when the convolution spring is subjected to certain pressure, the wing-shaped plate fin with the flow-around channel is promoted to move reversely, so that reciprocating motion is formed, the heat exchanger is more favorable for destroying the thickness of a thermal boundary layer between the fluid and the wall surface of the flow channel and strengthening heat exchange compared with a traditional heat exchanger, and the motion is spontaneous and does not need external force.
3. The bypass channel is L-shaped, so that the heat exchange area of the fluid can be effectively increased, a certain turbulent flow effect is achieved, and the enhanced heat dissipation is facilitated.
Drawings
The invention is further illustrated by the following examples in conjunction with the accompanying drawings:
FIG. 1 is a top view of the present invention;
FIG. 2 is a three-dimensional structural view of an airfoil fin of the present invention (without the incorporation of a convolution spring);
FIG. 3 is a front view of an airfoil plate fin of the present invention;
FIG. 4 is a three-dimensional block diagram of an airfoil fin of the present invention (with a convolution spring installed);
FIG. 5 is a first graph of the present invention showing the analysis of the local high pressure (when the airfoil plate fin has just generated the local high pressure);
FIG. 6 is a second graph of the present invention showing the analysis of the local high pressure relief force (when the airfoil wings swing downward);
FIG. 7 is a third diagram of the present invention showing the analysis of the local high pressure relief force (when the airfoil wings swing upward).
In the figure: the device comprises a box body 1, a turbulence column 2, an airfoil plate fin 3, a convolution spring 4 and a flow winding channel 5.
Detailed Description
Example 1:
the preferable scheme is as shown in fig. 1 to 7, a plate heat exchanger based on the karman vortex street effect comprises a box body 1, a heat exchange mechanism is arranged in the box body 1, the heat exchange mechanism comprises an airfoil plate fin 3, the airfoil plate fin 3 is connected with the box body 1 through a convolution spring 4, a flow winding channel 5 is arranged on the airfoil plate fin 3, an inlet hole of the flow winding channel 5 is located at the front end part of the airfoil plate fin 3, and an outlet hole of the flow winding channel 5 is located at the side part of the airfoil plate fin 3.
As shown in fig. 1, the left side of the box body 1 is provided with an air inlet, the right side of the box body 1 is provided with an air outlet, the box body 1 is internally provided with a plurality of heat exchange mechanisms, each heat exchange mechanism comprises a turbulent flow column 2, a wing-shaped plate fin 3 and a convolution spring 4, and the wing-shaped plate fin 3 is provided with a flow winding channel 5. As shown in fig. 2, two convolution springs 4 (or torsion springs) are embedded in two sides of the wing-shaped plate fin 3, so that the wing-shaped plate fin 3 can swing within a certain range.
As shown in fig. 3, the aerofoil fins 3 are preferably connected to the inner wall of the casing 1 by means of a rotating shaft and a return spring 4.
Further, the heat exchange mechanism also comprises a flow disturbing column 2, and the flow disturbing column 2 is positioned at the front end of the wing-shaped plate fin 3. By utilizing the Karman vortex street effect, the turbulence property of gas is increased, and the heat exchange efficiency is increased.
Furthermore, the front end of the wing panel fin 3 is provided with a groove, an inlet hole of the bypass flow channel 5 is positioned at the groove, and the turbulence column 2 is positioned at the front end of the groove; the bypass channel 5 is L-shaped or arc-shaped.
In this embodiment, the spoiler 2 is cylindrical, the groove is semicircular, and the radius of the groove is the same as that of the spoiler 2. The curvature of the top groove of the wing of the airfoil with the circumambient flow channel is 0.073, and the curvature radius is 13.66 mm. The outlet from the bypass channel 5 is located in the centre of the recess and 93.5mm from the leading edge of the aerofoil.
The principle of the invention is as follows:
as shown in fig. 5, when fluid flows through the airfoil plate fin 3, local high pressure is generated in upper and lower regions of the airfoil plate fin 3, and the deeper the gray scale value is, the higher the pressure is, and if the gray scale value is, the red color is, the high pressure is.
As shown in fig. 6-7, when a part of fluid passes through the flow-around channel, a lateral thrust is generated on the wing profile plate, the wing profile plate swings downwards, and under the action of the convolution spring 4, the wing profile plate swings upwards, and local high pressure is eliminated in the process of swinging the wing profile plate upwards and downwards.
The above-described embodiments are merely preferred embodiments of the present invention, and should not be construed as limiting the present invention, and the scope of the present invention is defined by the claims, and equivalents including technical features described in the claims. I.e., equivalent alterations and modifications within the scope hereof, are also intended to be within the scope of the invention.
Claims (5)
1. The utility model provides a plate heat exchanger based on karman vortex street effect, includes box (1), is equipped with heat transfer mechanism in box (1), its characterized in that: the heat exchange mechanism comprises an airfoil plate fin (3), the airfoil plate fin (3) is connected with the box body (1) through a rotary spring (4), a flow-around channel (5) is arranged on the airfoil plate fin (3), an inlet hole of the flow-around channel (5) is located at the front end part of the airfoil plate fin (3), and an outlet hole of the flow-around channel (5) is located at the side part of the airfoil plate fin (3).
2. The plate heat exchanger based on the karman vortex street effect of claim 1, wherein: the heat exchange mechanism further comprises a turbulence column (2), and the turbulence column (2) is located at the front end of the wing-shaped plate fin (3).
3. The plate heat exchanger based on the karman vortex street effect as recited in claim 2, wherein: the front end of the wing-shaped plate fin (3) is provided with a groove, the inlet hole of the flow-winding channel (5) is positioned at the groove, and the flow-disturbing column (2) is positioned at the front end of the groove; the bypass channel (5) is L-shaped or arc-shaped.
4. The plate heat exchanger based on the karman vortex street effect as recited in claim 2, wherein: the turbulence column (2) is cylindrical, the groove is semicircular, and the radius of the groove is the same as that of the turbulence column (2).
5. The plate heat exchanger based on the karman vortex street effect of claim 1, wherein: the convolution spring (4) is embedded in the side part of the wing-shaped plate fin (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210453055.2A CN114877727B (en) | 2022-04-27 | 2022-04-27 | Plate heat exchanger based on karman vortex street effect |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210453055.2A CN114877727B (en) | 2022-04-27 | 2022-04-27 | Plate heat exchanger based on karman vortex street effect |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114877727A true CN114877727A (en) | 2022-08-09 |
| CN114877727B CN114877727B (en) | 2024-05-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210453055.2A Active CN114877727B (en) | 2022-04-27 | 2022-04-27 | Plate heat exchanger based on karman vortex street effect |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114877727B (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4817709A (en) * | 1987-12-02 | 1989-04-04 | Carrier Corporation | Ramp wing enhanced plate fin |
| US20010036401A1 (en) * | 2000-01-22 | 2001-11-01 | Harvey Neil W. | Aerofoil for an axial flow turbomachine |
| US20020056544A1 (en) * | 1999-07-23 | 2002-05-16 | Kaveh Azar | Heat sink with radial shape |
| JP2007187371A (en) * | 2006-01-12 | 2007-07-26 | Denso Corp | Swing register device |
| WO2011018128A1 (en) * | 2009-08-13 | 2011-02-17 | Gea Air Treatment Gmbh | Heat exchanger in a flow channel |
| CN106232941A (en) * | 2014-04-16 | 2016-12-14 | 西门子股份公司 | Control to use the cooling stream in the cooled turbine vane of impact tube or blade |
| CN106314760A (en) * | 2016-09-23 | 2017-01-11 | 南昌航空大学 | Internal cavity through flow type high aerodynamic efficiency airfoil profile |
| CN106323078A (en) * | 2016-08-17 | 2017-01-11 | 西安交通大学 | Heat and mass transfer enhancement structure and design method thereof |
| CN111623654A (en) * | 2020-06-13 | 2020-09-04 | 张超 | Welding type wide-runner plate heat exchanger |
| CN211782914U (en) * | 2020-03-03 | 2020-10-27 | 兰州交通大学 | Circular tube fin heat exchanger with vibratile rectangular fins |
-
2022
- 2022-04-27 CN CN202210453055.2A patent/CN114877727B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4817709A (en) * | 1987-12-02 | 1989-04-04 | Carrier Corporation | Ramp wing enhanced plate fin |
| US20020056544A1 (en) * | 1999-07-23 | 2002-05-16 | Kaveh Azar | Heat sink with radial shape |
| US20010036401A1 (en) * | 2000-01-22 | 2001-11-01 | Harvey Neil W. | Aerofoil for an axial flow turbomachine |
| JP2007187371A (en) * | 2006-01-12 | 2007-07-26 | Denso Corp | Swing register device |
| WO2011018128A1 (en) * | 2009-08-13 | 2011-02-17 | Gea Air Treatment Gmbh | Heat exchanger in a flow channel |
| CN106232941A (en) * | 2014-04-16 | 2016-12-14 | 西门子股份公司 | Control to use the cooling stream in the cooled turbine vane of impact tube or blade |
| CN106323078A (en) * | 2016-08-17 | 2017-01-11 | 西安交通大学 | Heat and mass transfer enhancement structure and design method thereof |
| CN106314760A (en) * | 2016-09-23 | 2017-01-11 | 南昌航空大学 | Internal cavity through flow type high aerodynamic efficiency airfoil profile |
| CN211782914U (en) * | 2020-03-03 | 2020-10-27 | 兰州交通大学 | Circular tube fin heat exchanger with vibratile rectangular fins |
| CN111623654A (en) * | 2020-06-13 | 2020-09-04 | 张超 | Welding type wide-runner plate heat exchanger |
Non-Patent Citations (1)
| Title |
|---|
| 张玲;李英东;王建龙;董宇航;: "不同实度扰流柱阵列的流动与换热特性研究", 热力发电, no. 07 * |
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| Publication number | Publication date |
|---|---|
| CN114877727B (en) | 2024-05-28 |
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