CN109210962A - A kind of fin-tube type heat exchanger with sand dune shape eddy generator - Google Patents
A kind of fin-tube type heat exchanger with sand dune shape eddy generator Download PDFInfo
- Publication number
- CN109210962A CN109210962A CN201810709886.5A CN201810709886A CN109210962A CN 109210962 A CN109210962 A CN 109210962A CN 201810709886 A CN201810709886 A CN 201810709886A CN 109210962 A CN109210962 A CN 109210962A
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- China
- Prior art keywords
- fin
- heat exchanger
- eddy generator
- tube type
- type heat
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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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
- F28D1/00—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators
- F28D1/02—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid
- F28D1/04—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits
- F28D1/053—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits the conduits being straight
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F1/00—Tubular elements; Assemblies of tubular elements
- F28F1/10—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses
- F28F1/12—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element
- F28F1/24—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element and extending transversely
- F28F1/32—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element and extending transversely the means having portions engaging further tubular elements
-
- 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
- F28F13/12—Arrangements for modifying heat-transfer, e.g. increasing, decreasing by affecting the pattern of flow of the heat-exchange media by creating turbulence, e.g. by stirring, by increasing the force of circulation
Abstract
The invention discloses a kind of fin-tube type heat exchangers with sand dune shape eddy generator, including fin and through multiple heat exchanger tubes of fin, one side of the fin is equipped with multiple eddy generators, each eddy generator is between two adjacent heat exchanger tubes, the streamlined sand dune shape of the shape of the eddy generator.Fin-tube type heat exchanger of the invention is equipped with sand dune shape eddy generator between any two adjacent heat exchanger tubes, the sand dune shape eddy generator has typical streamlined features, in the case where reaching same heat transfer boundary condition, there is lower flow resistance, and air side heat exchange property can be effectively improved.
Description
Technical field
The present invention relates to heat exchanger more particularly to a kind of fin-tube type heat exchangers with sand dune shape eddy generator.
Background technique
Heat exchanger as between a kind of different medium carry out heat exchange common processing equipment, be widely used in heating, power,
The industries such as refrigeration, air-conditioning, petroleum or even aviation.Heat exchanger is not only to guarantee that engineering equipment runs well not in above-mentioned every profession and trade
The component that can or lack, and occupy important share in terms of energy source and power consumption, the research and development of energy-efficient heat and mass equipment
It is always one of heat exchange industry institute key technology to be solved with application.
It is the fin-tube type heat exchanger of air and water for working media, heat exchange property depends primarily on fin surface heat transfer
Coefficient and air-flow flow through consumed energy when heat exchanger.In order to improve fin-tube type heat exchanger heat exchange property, set in fin surface
Setting eddy generator is a kind of effective raising heat transfer measure, and being mainly characterized by for this measure is generated using eddy generator
Longitudinal shrinking turbulence come destroy with skiving fluid layer and thermal boundary layer, so that enhanced heat exchange is carried out in the direction for changing mainstream, and make to hinder
Power rises the smaller synthesis heat transfer characteristic to strengthen fin-tube type heat exchanger.
There are two types of currently used eddy generators, and one of which is aerofoil profile eddy generator, such as dalta wing, RECTANGULAR WINGS, trapezoidal
The wing or curved wing, this eddy generator have stronger enhanced heat transfer effect since end can generate stronger secondary vortices,
But its shape and frictional resistance are larger.Another kind is column type eddy generator, such as square column, cylinder or cylindroid, this eddy generator
With lower form drag, stronger horseshoe vortex system can be generated in root, and then strengthen the heat convection with wall surface, but it is strong
It is relatively poor to change heat-transfer effect.
In order to seek suitable eddy generator, fin-tube type heat exchanger stream is reduced as far as while improving heat exchange property
Dynamic resistance has important practical significance.It is inspired by crescent dune present in nature, the present invention proposes a kind of with sand
The fin-tube type heat exchanger of mound shape eddy generator has lower form drag, for mentioning while taking into account heat conduction reinforced efficiency
High heat exchanger effectiveness, energy-saving and emission-reduction have important meaning.
Summary of the invention
The fin-tube type heat exchanger design with sand dune shape eddy generator that the technical problem to be solved in the present invention is to provide a kind of,
Air side heat exchange property can be effectively improved, and can be reduced the flow resistance of heat exchanger.
In order to solve the above technical problems, the invention provides the following technical scheme: a kind of pipe with sand dune shape eddy generator
Fin heat exchanger, including fin and through multiple heat exchanger tubes of fin, a side of the fin is sent out equipped with multiple whirlpools
Raw device, each eddy generator is between two adjacent heat exchanger tubes, the streamlined sand dune of the shape of the eddy generator
Shape.
The invention has the following beneficial effects: fin-tube type heat exchangers of the invention in any two phase compared to the prior art
Shape eddy generator in sand dune is equipped between adjacent heat exchanger tube, which has typical streamlined features, reaching
Under same heat transfer boundary condition, there is lower flow resistance, and air side heat exchange property can be effectively improved.
Preferably, the multiple heat exchanger tube is uniformly distributed on the fin in queue shape, the adjacent two column heat exchanger tube
It is staggered.
Preferably, the heat exchanger tube is round, rectangular or special-shaped heat exchange pipeline.
Further, the sand dune shape is in crescent.
Preferably, the quantity of the fin is at least two groups, and two groups of fins of arbitrary neighborhood are parallel to each other and constitute up and down
The upper fin of setting relationship and lower fin.
Preferably, the spacing between fin described in adjacent two groups is H, and the height of the eddy generator is h, H < 3h.
Preferably, the eddy generator has windward side and leeward, and the inclination angle of the windward side is between 8 ° -30 °, institute
The inclination angle of leeward is stated between 25 ° -50 °.
Preferably, it can be formed between upper and lower fin and windward side when air flows through the windward side of the eddy generator
One accelerated passage.
Preferably, the two sides of the eddy generator all have the flank extended along wind direction, and two flanks are from leeward along wind
Downstream extend and constitutes wing angle.
Preferably, the eddy generator is installed on the fin by the way of welding, being bonded or embedded into.
Detailed description of the invention
Fig. 1 is a kind of stereoscopic schematic diagram of the fin-tube type heat exchanger with sand dune shape eddy generator of the present invention；
Fig. 2 is the main view of fin-tube type heat exchanger of the present invention；
Fig. 3 is the bottom view of fin-tube type heat exchanger of the present invention；
Fig. 4 is the structural schematic diagram of eddy generator of the present invention；
Fig. 5 be Fig. 4 in A-A to schematic cross-sectional view；
Fig. 6 is that eddy generator of the present invention is flowing to the velocity contour on direction；
Fig. 7 is motion pattern of the eddy generator of the present invention on longitudinal cross-section.
In figure: 1- fin, 2- heat exchanger tube, 3- eddy generator, the windward side 4-, 5- leeward, 6- first longitudinal direction whirlpool, 7- second
Longitudinal Vortex.
Specific embodiment
A specific embodiment of the invention is described in detail with reference to the accompanying drawing, rather than to protection scope of the present invention
Limitation.It will be appreciated that in the description of the present invention, the side of the instructions such as term "front", "rear", "left", "right", "upper", "lower"
Position or positional relationship are to be based on the orientation or positional relationship shown in the drawings, and are merely for convenience of description of the present invention and simplification of the description,
Rather than the device or element of indication or suggestion meaning must have a particular orientation, be constructed and operated in a specific orientation, because
This is not considered as limiting the invention.It is similar to be different from that term " first ", " second " etc. are only used for simplified verbal description
Object.
Refering to fig. 1 and Fig. 2, one of the present embodiment have the fin-tube type heat exchanger of sand dune shape eddy generator, including wing
Piece 1 and multiple heat exchanger tubes 2 through fin 1.The surface polishing treatment of fin 1, to reduce windage, raising flows through fin 1
Speed air flow.Multiple heat exchanger tubes 2 are uniformly distributed on fin 1 in queue shape, and adjacent two column heat exchanger tube 2 is staggered.Make
Obtain the distribution triangular in shape of three heat exchanger tubes 2 in any two queue.Air can be shunted, uniformly be flowed translateral
Heat transfer effect is improved on 2 surface of heat exchanger tube.Heat exchanger tube 2 is extended vertically through in fin 1, and air flow efficiency can be improved.Certainly at it
In his embodiment, heat exchanger tube 2 also tiltable through fin 1.Heat exchanger tube 2 is round, rectangular or special-shaped in the present embodiment
Heat exchange pipeline can come into full contact with, good effect of heat exchange with air.
In the present embodiment, a side of fin 1 is equipped with multiple eddy generators 3.Multiple eddy generators 3 are also in queue shape
It is uniformly distributed on fin 1, adjacent two column eddy generator 3 is staggered.So that three eddy generators 3 in any two queue
Distribution triangular in shape.Eddy generator 3 is installed on fin 1 by the way of welding, being bonded or embedded into.The material of the eddy generator 3
The material of heat exchanger itself can be used in material, can also be used other easy to cut and installation metal materials, material it is resistance to mild
Heating conduction should meet the requirement of fin-tube type heat exchanger operating condition.Certainly in other embodiments, eddy generator 3 can also
It is formed by the way of punching press, is integrally formed with fin 1.
Refering to Fig. 2 and Fig. 3, eddy generator 3 and heat exchanger tube 2 in each queue are spaced apart from each other setting, each eddy generator 3
Between two adjacent heat exchanger tubes 2.The forward terminal of each eddy generator 3 is located therein two adjacent heat exchange tubes 2 of a column
Centre, forward terminal is respectively d1 with the longitudinal pitch at two 2 centers of adjacent heat exchange tubes, wherein two on a column adjacent change
Longitudinal pitch between heat pipe 2 is S1, d1=S1/2.The rear end of each eddy generator 3 correspond to it is adjacent one column and with wherein
The horizontal spacing at 2 center of heat exchanger tube of the one column staggered heat exchanger tube 2 of upper two heat exchanger tubes 2, forward terminal and an adjacent column is d2,
Wherein the horizontal spacing between two adjacent heat exchange tubes 2 on a column and the heat exchanger tube 2 of an adjacent column is S2, d2=S2.Fin 1
On multiple eddy generators 3 be uniformly staggered with multiple heat exchanger tubes 2, air can uniformly be flowed through to multiple 2 tables of heat exchanger tube
Heat transfer effect is improved in face.When fin-tube type heat exchanger works, air is flowed through outside heat exchanger tube 2, is cooling water inside heat exchanger tube 2.It is logical
Cross the heat transfer between the thermally conductive and convection current realization air and cooling water of heat exchanger tube 2, fin 1, eddy generator 3.Each whirlpool hair
The streamlined sand dune shape of the shape of raw device 3.The sand dune shape eddy generator 3 has typical streamlined features, same reaching
Under equal heat transfer boundary conditions, there is lower flow resistance, and air side heat exchange property can be effectively improved.
Refering to Fig. 4 and Fig. 5, in the present embodiment, the eddy generator 3 of sand dune shape shows crescent in the overlook direction of space
The shape of shape.From the point of view of space topological form, the eddy generator 3 of the sand dune shape has windward side 4 and leeward 5.Flow through pipe
The air of fin heat exchanger flows to leeward 5 from windward side 4.The inclination alpha of windward side 4 is between 8 ° -30 °, the inclination angle of leeward 5
β is between 25 ° -50 °.The sand dune shape eddy generator 3 of the crescent-shaped further reduced the flow resistance of air.
In the present embodiment, the quantity of fin 1 is at least two groups, and two groups of fins 1 of arbitrary neighborhood are parallel to each other and constitute
The upper fin of lower setting relationship and lower fin.Eddy generator 3 on each group fin 1 is respectively positioned on same side.Air flows through whirlpool hair
An accelerated passage can be formed between upper and lower fin and windward side 4 when raw 3 windward side of device, the air stream meeting after accelerating
Impact is generated to upper fin surface, the fluid boundary layer of fin is thinned, enhances the blending of incoming flow and boundary layer fluid, by force
The heat transfer effect of upper fin is changed.The quantity of fin 1, which is greater than or equal to two groups, in the present invention (has the upper of relationship setting up and down
Fin and lower fin), eddy generator 3 can generate the effect of enhanced heat exchange to upper fin, further strengthen fin-tube type heat exchanger
Heat transfer effect.The quantity of fin 1 is four groups in the present embodiment, and the spacing between two groups of adjacent fins 1 is H, eddy generator 3
Height be h, H < 3h, it is ensured that acceleration effect of the eddy generator 3 to incoming air.
Refering to Fig. 6, which is obtained by PIV experiment.As can be seen from Figure 6 at generator highest point
Incoming flow starts to accelerate, and maximum speed can reach 2.5 times (mainstream speed is set as 0.1) of mainstream speed, imitates using this acceleration
The disturbance of fin fluid boundary layer in reply, enhances the blending of incoming flow and boundary layer fluid, further strengthens the heat exchange of upper fin
Effect.
Certainly in other embodiments, the quantity of fin 1 can also be one group, the enhanced heat transfer effect of this structure only body
Now on the fin 1 of installation eddy generator 3.The flowing that certain structure can also reduce air by sand dune shape eddy generator 3 hinders
Power, and air side heat exchange property can be effectively improved.
In the present embodiment, when air flows through leeward 5, it can generate with very strong three-dimensionality flow field, in front and back pressure difference
Under the action of, a pair of counter clockwise direction identical with direction of flow longitudinal direction vortex structure is produced, this longitudinal direction vortex structure can be broken
Bad fully developed boundary layer, the confusion degree of enhancing fluid flowing, can greatly improve the coefficient of heat transfer.In addition, eddy generator 3
Two sides all have the flank extended along wind direction, two flanks extend along wind direction downstream from leeward 5 and constitute wing angle.Work as air
When flowing through the wing angle in 5 downstream of leeward, another pair of anticlockwise longitudinal vortex structure also can produce at the downstream at wing angle,
The interaction between mainstream and lower fin is further enhanced, heat exchange property is enhanced.
Refering to Fig. 7, which is obtained by PIV experiment.As can be seen from Figure 7 whirlpool occurs in longitudinal section
The longitudinal Vortex rotated counterclockwise in 3 flow field of device there are two Duis, when wherein first longitudinal direction whirlpool 6 flows through eddy generator 3 by fluid
The pressure difference of front and back generates, and this spiral structure has biggish scale, can destroy fully developed boundary layer, enhances fluid stream
Dynamic confusion degree can greatly improve the coefficient of heat transfer.In addition, in the wing angle of 3 two sides of eddy generator and the interaction of incoming flow
Under, the opposite second longitudinal direction whirlpool 7 in another pair of direction of rotation is also created, the phase interaction between mainstream and lower fin is enhanced
With further improving heat exchanger performance.
Above embodiments are only to illustrate the present invention and not limit the technical scheme described by the invention；Therefore, although
The present invention has been described in detail referring to the above embodiments for this specification, still, those skilled in the art
It should be appreciated that still can modify to the present invention or equivalent replacement；And all do not depart from the spirit and scope of the present invention
Technical solution and its improvement should all be covered within the scope of the claims of the present invention.
Claims (10)
1. a kind of fin-tube type heat exchanger with sand dune shape eddy generator, including fin and through multiple heat exchanger tubes of fin,
It is characterized by: a side of the fin is equipped with multiple eddy generators, each eddy generator is located at adjacent two
Between a heat exchanger tube, the streamlined sand dune shape of the shape of the eddy generator.
2. fin-tube type heat exchanger according to claim 1, it is characterised in that: the multiple heat exchanger tube uniformly divides in queue shape
It is distributed on the fin, the adjacent two column heat exchanger tube is staggered.
3. fin-tube type heat exchanger according to claim 1, it is characterised in that: the heat exchanger tube is round, rectangular or special-shaped
Heat exchange pipeline.
4. fin-tube type heat exchanger as claimed in any of claims 1 to 3, it is characterised in that: the sand dune shape is in
It is crescent.
5. fin-tube type heat exchanger according to claim 4, it is characterised in that: the quantity of the fin is at least two groups, appoints
Two groups of fins for anticipating adjacent are parallel to each other and constitute the upper fin and lower fin of relationship setting up and down.
6. fin-tube type heat exchanger according to claim 5, it is characterised in that: the spacing between fin described in adjacent two groups
For H, the height of the eddy generator is h, H < 3h.
7. fin-tube type heat exchanger according to claim 5, it is characterised in that: the eddy generator has windward side and leeward
Face, the inclination angle of the windward side is between 8 ° -30 °, and the inclination angle of the leeward is between 25 ° -50 °.
8. fin-tube type heat exchanger according to claim 7, it is characterised in that: air flows through the windward side of the eddy generator
When an accelerated passage can be formed between upper and lower fin and windward side.
9. fin-tube type heat exchanger according to claim 7, it is characterised in that: the two sides of the eddy generator all have along wind
To the flank of extension, two flanks extend along wind direction downstream from leeward and constitute wing angle.
10. fin-tube type heat exchanger according to claim 4, it is characterised in that: the eddy generator using welding, bonding or
The mode of insertion is installed on the fin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810709886.5A CN109210962A (en) | 2018-07-02 | 2018-07-02 | A kind of fin-tube type heat exchanger with sand dune shape eddy generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810709886.5A CN109210962A (en) | 2018-07-02 | 2018-07-02 | A kind of fin-tube type heat exchanger with sand dune shape eddy generator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109210962A true CN109210962A (en) | 2019-01-15 |
Family
ID=64989896
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810709886.5A Withdrawn CN109210962A (en) | 2018-07-02 | 2018-07-02 | A kind of fin-tube type heat exchanger with sand dune shape eddy generator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109210962A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102297097A (en) * | 2010-06-23 | 2011-12-28 | 通用电气公司 | Wind turbine blades with aerodynamic vortex elements |
| CN102788526A (en) * | 2012-09-06 | 2012-11-21 | 四川惊雷压力容器制造有限责任公司 | Three-dimensional thin electrolyte film condenser tube |
| CN109029016A (en) * | 2017-06-12 | 2018-12-18 | 江苏理工学院 | A kind of fin-tube type heat exchanger with sand dune shape eddy generator |
-
2018
- 2018-07-02 CN CN201810709886.5A patent/CN109210962A/en not_active Withdrawn
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102297097A (en) * | 2010-06-23 | 2011-12-28 | 通用电气公司 | Wind turbine blades with aerodynamic vortex elements |
| CN102788526A (en) * | 2012-09-06 | 2012-11-21 | 四川惊雷压力容器制造有限责任公司 | Three-dimensional thin electrolyte film condenser tube |
| CN109029016A (en) * | 2017-06-12 | 2018-12-18 | 江苏理工学院 | A kind of fin-tube type heat exchanger with sand dune shape eddy generator |
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Application publication date: 20190115 |