CN110207530A - A kind of high-intensitive heat exchange fin using two-way discrete projecting parts - Google Patents
A kind of high-intensitive heat exchange fin using two-way discrete projecting parts Download PDFInfo
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- CN110207530A CN110207530A CN201910440956.6A CN201910440956A CN110207530A CN 110207530 A CN110207530 A CN 110207530A CN 201910440956 A CN201910440956 A CN 201910440956A CN 110207530 A CN110207530 A CN 110207530A
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- fin
- bulge
- heat exchange
- projecting parts
- discrete projecting
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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
- F28F3/04—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations the means being integral with the element
- F28F3/042—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations the means being integral with the element in the form of local deformations of the element
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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)
Abstract
A kind of high-intensitive heat exchange fin using two-way discrete projecting parts, the heat exchange fin include fin matrix, folded edges, discrete projecting parts structure and heat exchanger tube；Two-way discrete projecting parts structure is arranged on the fin matrix；The bulge-structure one and bulge-structure four are identical protrusion direction, opposite with the protrusion direction of bulge-structure two and bulge-structure three.The high-intensitive heat exchange fin of the two-way discrete projecting parts can make fluid generate violent disturbance by the way that multiple groups discrete projecting parts are arranged, being capable of significant ground enhanced heat exchange；And bidirectional arrangements are set by multiple groups discrete projecting parts, the fluid in entire fin runner can be effectively acted on, also can reduce flow resistance.
Description
Technical field
The invention belongs to technical field of heat exchangers, are related to a kind of suitable for each rows such as Heating,Ventilating and Air Conditioning, refrigeration, chemical industry, automobiles
The fin-tube type heat exchanger fin of industry, in particular to a kind of high-intensitive heat exchange fin using two-way discrete projecting parts.
Background technique
Heat exchanger is one of the ost important components in air-conditioning, its performance quality directly influences the overall efficiency of air-conditioning.With
Requirement of the China to domestic air conditioning efficiency it is higher and higher, specifically how in the case where low cost, improve the property of heat exchanger
It can be even more the emphasis of analysis and research.Fin-tube type heat exchanger is mainly used in air-conditioning at present, since air side heat transfer property is poor, this
The thermal resistance of kind heat exchanger focuses primarily upon the air side outside pipe, and pipe external thermal resistance can account for the 80%~90% of entire thermal resistance, so,
Fin structure outside optimization pipe will be effectively improved the heat transfer property of heat exchanger.Multiplicity that there are many forms of heat exchanger fin, by
Initial plate fin, corrugated fin, the louvered fin finally developed, slitted fin etc..These fins increase heat exchange
The heat exchange area of device air side, while the disturbance to fluid is also enhanced, the heat exchange property of heat exchanger is enhanced significantly.But
It is traditional to crack or louvered fin is commonly available to the heat conduction reinforced of non-frozen condition, it cracks or shutter wing because traditional
Piece reinforced structure is usually easy to be blocked by frost layer under frozen condition, to reduce the heat exchange property of fin.
But slitted fin can effectively enhanced heat exchange, therefore, as far as possible in the item for not opening a window He not cracking in the present invention
Fin is improved under part, and meet processing technology fin symmetry and it is high-intensitive require, using the two-way thought cracked,
Two-way discrete projecting parts structural fins are proposed, can be effectively reduced influence of the frosting problem to fin exchange capability of heat.
Summary of the invention
In order to overcome the disadvantages of the above prior art, the purpose of the present invention is to provide a kind of using two-way discrete projecting parts
High-intensitive heat exchange fin,
To achieve the goals above, the technical solution adopted by the present invention is that:
A kind of high-intensitive heat exchange fin using two-way discrete projecting parts, including fin matrix 1, have confession on fin matrix 1
The heat exchange pore 7 that heat exchanger tube passes through, which is characterized in that heat exchange pore 7 is provided with two-way discrete projecting parts on fin matrix 1
Structure.Fin realizes the violent disturbance of fluid by two-way discrete projecting parts structure, destroys flow boundary layer, and has drainage effect
Fruit flows stagnation region after reducing pipe.
The two-way discrete projecting parts structure includes several segments about the heat exchange centrosymmetric bulge-structure 1 of pore 7 and convex
Play structure 24, and bulge-structure 35 and bulge-structure 46 between adjacent heat exchange pore 7, wherein bulge-structure one
3, bulge-structure 24, bulge-structure 35, bulge-structure 46 are respectively positioned on fin matrix 1 and are respectively not attached to.
The bulge-structure 1 is identical with the protrusion direction of bulge-structure 46, and ties with bulge-structure 24 and protrusion
The protrusion direction of structure 35 is opposite.
Wherein, it is located at about the centrosymmetric each section of bulge-structure 1 of same heat exchange pore 7 and bulge-structure 24 same
On circumference, the bulge-structure 46 is arranged on the line of adjacent heat exchange pore 7, bulge-structure 35 be it is multiple, changed along adjacent
The line in heat pipe hole 7 is arranged symmetrically, and the bulge-structure 35 and bulge-structure 46 are respectively positioned on except the circumference.
The height of the bulge-structure 1 is 0.5~1.0mm, and bottom surface is right-angled trapezium, bottom edge length is 1.5~
2.5mm, a height of 1.5~3.0mm of bottom surface, base angle are 60~70 °；The height of the bulge-structure 24 is 0.5~1.0mm, bottom
The inside radius in face is 5.6mm, and outer radius is 7.0~8.0mm, the angle of two raised cambered surfaces and fin surface is 45~
60 °, the angle of other two side and fin surface is 30~45 °；The height of the bulge-structure 35 is 0.5~1.0mm,
Bottom surface is isosceles trapezoid, and top margin length is 1.5~3.0mm, and bottom edge length is 2.5~4.0mm, bottom surface a height of 2.5~
The angle of 3.5mm, two sides and fin surface close and far from fin edges are 30~45 °, other two side and wing
The angle on piece surface is 45~60 °；The height of the bulge-structure 46 is 0.5~1.0mm, two cambered surfaces and and fin surface
Angle be 45~60 °, the angle of other two side and fin surface is 30~45 °, and the length along piece wide direction bottom surface is
2.5~4.0mm, the radius of bottom surface camber line are 8.5~9.5mm.
The fin matrix 1 is flat construction, and heat exchange pore 7 is located on line of symmetry in 1 width direction of fin matrix, described
Two-way discrete projecting parts high intensity heat exchange fin is symmetrical fin.
For the fin matrix 1 with a thickness of 0.09~0.11mm, width is 18.19~21.65mm；Adjacent fins matrix 1
Spacing is 1.3~1.6mm；The caliber of the heat exchanger tube is 7mm or 7.94mm；The pitch-row of adjacent heat exchange pore 7 is 21~23mm.
The long side two sides of the fin matrix 1 are provided with folded edges 2.
Compared with prior art, the beneficial effects of the present invention are:
1) discrete projecting parts structure is set in the circumference of heat exchanger tube, the disturbance of fluid can be enhanced, increase fluid and heat exchanger tube
With the heat transfer intensity of fin surface, and reduce flowing stagnation region of the fluid after heat exchanger tube.Moreover, using two-way protrusion, it can
Fluid in the entire fin runner in ground is disturbed, can significant ground enhanced heat exchange.
2) in the symmetrical axis direction of adjacent heat exchange tubes, three alternately inverted bulge-structures is set, stream can be effectively enhanced
Disturbance of the body on main flow direction, further enhanced heat exchange.
3) it is all made of certain inclination angle in the side of each protrusion, is not generated while fluid heat transfer can be enhanced larger
Fluid resistance.
4) folded edges are set in fin leading edge and rear, can effectively enhance fin strength.
Detailed description of the invention
The present invention is further described for described embodiment with reference to the accompanying drawing.
Fig. 1 is the top view of the embodiment of the present invention.
Fig. 2 is the A-A cross section view of the embodiment of the present invention.
Fig. 3 is the B-B cross section view of the embodiment of the present invention.
Fig. 4 is the C-C cross section view of the embodiment of the present invention.
Fig. 5 is the axonometric drawing of the embodiment of the present invention.
Specific embodiment
The embodiment that the present invention will be described in detail with reference to the accompanying drawings and examples.
It is the embodiment of two-way discrete projecting parts high intensity heat exchange fin of the invention, the master of the fin referring to Fig. 1 to Fig. 5
Wanting feature includes: fin matrix 1, folded edges 2, bulge-structure 1, bulge-structure 24, bulge-structure 35, bulge-structure four
6 and heat exchange pore 7.
Fin matrix 1 is plain fin, and long side two sides are provided with folded edges 2, the heat exchange pore 7 passed through for heat exchanger tube
It is located on line of symmetry in 1 width direction of fin matrix.Heat exchange pore 7 is provided with two-way discrete projecting parts on fin matrix 1
Structure, two-way discrete projecting parts structure is mainly by several segments about the centrosymmetric above-mentioned bulge-structure 1 of heat exchange pore 7 and protrusion
Structure 24, and above-mentioned bulge-structure 35 and the composition of bulge-structure 46 between adjacent heat exchange pore 7, protrusions
Structure 1, bulge-structure 24, bulge-structure 35, bulge-structure 46 are respectively positioned on fin matrix 1 and are respectively not attached to.And protrusion
Structure 1 is identical with the protrusion direction of bulge-structure 46, and the protrusion direction phase with bulge-structure 24 and bulge-structure 35
Instead.
Entire two-way discrete projecting parts high intensity heat exchange fin is symmetrical fin, and fin is realized by two-way discrete projecting parts structure
The violent disturbance of fluid destroys flow boundary layer, and has drainage effect, flows stagnation region after reducing pipe.
In the present embodiment, about the centrosymmetric each section of bulge-structure 1 of same heat exchange pore 7 and bulge-structure 24
In on same circumference, bulge-structure 46 is arranged on the line of adjacent heat exchange pore 7, bulge-structure 35 be it is multiple, along adjacent
The line of heat exchange pore 7 is arranged symmetrically, and bulge-structure 35 and bulge-structure 46 are respectively positioned on except above-mentioned circumference.
The specific structure parameter of embodiment is described below, take fin width direction as longitudinal, finned length side in the introduction
To for laterally, using close heat exchange 7 direction of pore as inside, the direction far from heat exchange pore 7 is outside.
Fin width (namely width of fin matrix 1) is 21.65mm, and the pitch-row of adjacent heat exchange pore 7 is 21mm, fin
Thickness (namely thickness of fin matrix 1) is 0.1mm, heat exchange tube diameter 7mm.The height of all bulge-structures is 0.7mm.
The bottom surface of bulge-structure 1 is right-angled trapezium, and bottom edge length is 2.0mm, and a height of 3.0mm of bottom surface, base angle is 70 °.Protrusion knot
The inside radius of 24 bottom surface of structure is 5.6mm, outer radius 7.4mm, and the angle of two raised cambered surfaces and fin surface is 60 °,
The angle of other two side and fin surface is 45 °.The bottom surface of bulge-structure 35 is isosceles trapezoid, and top margin length is
2.5mm, bottom edge length are 4.0mm, a height of 2.5mm of bottom surface, close to and far from fin edges two sides and fin surface
Angle is 45 °, and the angle of other two side and fin surface is 60 °.Two cambered surfaces of bulge-structure 46 with fin table
The angle in face is 60 °, and the angle of other two side and fin surface is 45 °, and the length along piece wide direction bottom surface is 4.0mm,
The radius of bottom surface camber line is 9.0mm.The vertical height of folded edges 2 is 0.3mm, and the gradient is 20 °, slope lower sideline and fin side
The distance of edge is 1.0mm.
Using the fluid interchange for the flanging plain fin that ANSYS FLUENT software has used the embodiment and industry
Performance carries out numerical value calculating.Design conditions are as follows: air velocity 1.597m/s, inlet temperature 308K, heat exchanging pipe wall temperature
318.5K, using the SST k-w model of stable state, normal physical property.Discrete, pressure and speed are carried out to governing equation by Finite Volume Method for Air
The coupling of degree uses SIMPLE algorithm.Simulation considers the influence of fin thickness, and heat exchange fin wall surface is speed without sliding solid side
Boundary, fin surface temperature are calculated by flowing solid heat transfer coupling.For momentum and energy equation, diffusion term uses centered difference
Format, convective term use second-order upwind difference format.When the residual error of continuity equation, the equation of momentum and energy equation is below
10-6When, it is believed that numerical result convergence.
The pressure and temperature imported and exported by extracting zoning, can calculate the heat exchange amount and pressure drop of different fins,
Consider the pressure drop that blower itself is lost simultaneously, can be obtained the situation of change of heat exchange amount under equal-wattage.Data calculated result
Show that compared with the flanging plain fin that industry has used, the coefficient of heat transfer of the present embodiment is largely increased, in identical function
Heat exchange amount promotes 9.3% under the conditions of rate, it is ensured that significantly mentioning for comprehensive performance is realized in the case where not opening a window and do not crack
It rises.
Claims (8)
1. a kind of high-intensitive heat exchange fin using two-way discrete projecting parts, including fin matrix (1), have on fin matrix (1)
The heat exchange pore (7) passed through for heat exchanger tube, which is characterized in that circular heat exchange pore (7) is provided with two-way on fin matrix (1)
Discrete projecting parts structure.
2. according to claim 1 use two-way discrete projecting parts high-intensitive heat exchange fin, which is characterized in that it is described it is two-way from
Scattered bulge-structure includes several segments about the centrosymmetric bulge-structure one (3) of heat exchange pore (7) and bulge-structure two (4), with
And bulge-structure three (5) and bulge-structure four (6) between adjacent heat exchange pore (7), wherein bulge-structure one (3), convex
Structure two (4), bulge-structure three (5), bulge-structure four (6) is played to be respectively positioned on fin matrix (1) and be respectively not attached to.
3. using the high-intensitive heat exchange fin of two-way discrete projecting parts according to claim 2, which is characterized in that the protrusion knot
Structure one (3) is identical with the protrusion direction of bulge-structure four (6), and the protrusion with bulge-structure two (4) and bulge-structure three (5)
It is contrary.
4. using the high-intensitive heat exchange fin of two-way discrete projecting parts according to Claims 2 or 3, which is characterized in that about same
The centrosymmetric each section of bulge-structure one (3) of one heat exchange pore (7) and bulge-structure two (4) are located on same circumference, described convex
Rise structure four (6) be arranged on the line of adjacent heat exchange pore (7), bulge-structure three (5) be it is multiple, along adjacent heat exchange pore
(7) line is arranged symmetrically, and the bulge-structure three (5) and bulge-structure four (6) are respectively positioned on except the circumference.
5. using the high-intensitive heat exchange fin of two-way discrete projecting parts according to Claims 2 or 3, which is characterized in that described convex
The height for playing structure one (3) is 0.5~1.0mm, and bottom surface is right-angled trapezium, and bottom edge length is 1.5~2.5mm, bottom surface it is a height of
1.5~3.0mm, base angle are 60~70 °；The height of the bulge-structure two (4) is 0.5~1.0mm, and the inside radius of bottom surface is
5.6mm, outer radius are 7.0~8.0mm, and the angle of two raised cambered surfaces and fin surface is 45~60 °, other two side
The angle of face and fin surface is 30~45 °；The height of the bulge-structure three (5) is 0.5~1.0mm, and bottom surface is isosceles ladder
Shape, top margin length be 1.5~3.0mm, bottom edge length be 2.5~4.0mm, a height of 2.5~3.5mm of bottom surface, it is close and separate
The two sides of fin edges and the angle of fin surface are 30~45 °, and the angle of other two side and fin surface is 45
~60 °；The height of the bulge-structure four (6) is 0.5~1.0mm, two cambered surfaces and the angle with fin surface be 45~
60 °, the angle of other two side and fin surface is 30~45 °, and the length along piece wide direction bottom surface is 2.5~4.0mm, bottom
The radius of face camber line is 8.5~9.5mm.
6. using the high-intensitive heat exchange fin of two-way discrete projecting parts according to claim 1, which is characterized in that the fin base
Body (1) is flat construction, and heat exchange pore (7) is located on line of symmetry in fin matrix (1) width direction, the two-way discrete projecting parts
High-intensitive heat exchange fin is symmetrical fin.
7. using the high-intensitive heat exchange fin of two-way discrete projecting parts according to claim 6, which is characterized in that the fin base
For body (1) with a thickness of 0.09~0.11mm, width is 18.19~21.65mm；The spacing of adjacent fins matrix (1) be 1.3~
1.6mm；The caliber of the heat exchanger tube is 7mm or 7.94mm；The pitch-row of adjacent heat exchange pore (7) is 21~23mm.
8. using the high-intensitive heat exchange fin of two-way discrete projecting parts according to claim 6, which is characterized in that the fin base
The long side two sides of body (1) are provided with folded edges (2).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910440956.6A CN110207530B (en) | 2019-05-24 | 2019-05-24 | High-strength heat exchange fin adopting bidirectional discrete protrusions |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910440956.6A CN110207530B (en) | 2019-05-24 | 2019-05-24 | High-strength heat exchange fin adopting bidirectional discrete protrusions |
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| CN110207530A true CN110207530A (en) | 2019-09-06 |
| CN110207530B CN110207530B (en) | 2020-06-12 |
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| EP2219002A4 (en) * | 2008-02-20 | 2013-07-24 | Mitsubishi Electric Corp | Heat exchanger arranged in ceiling-buried air conditioner, and ceiling-buried air conditioner |
| US20160320147A1 (en) * | 2014-08-01 | 2016-11-03 | Liangbi WANG | Streamlined wavy fin for finned tube heat exchanger |
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| CN109737792A (en) * | 2018-12-29 | 2019-05-10 | 西安交通大学 | A kind of special-shaped endless tube structural fins for air-conditioning heat exchanger |
| CN109737791A (en) * | 2018-12-29 | 2019-05-10 | 西安交通大学 | A kind of trapezoidal ripple and special-shaped endless tube structure composite fin |
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Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2219002A4 (en) * | 2008-02-20 | 2013-07-24 | Mitsubishi Electric Corp | Heat exchanger arranged in ceiling-buried air conditioner, and ceiling-buried air conditioner |
| CN101349523A (en) * | 2008-09-02 | 2009-01-21 | 西安交通大学 | Step ladder dish-shaped reinforced thermal transmission fin |
| CN102087079A (en) * | 2011-02-23 | 2011-06-08 | 浙江工业大学 | Radial type reinforced heat exchange fin |
| US20160320147A1 (en) * | 2014-08-01 | 2016-11-03 | Liangbi WANG | Streamlined wavy fin for finned tube heat exchanger |
| JP2017166757A (en) * | 2016-03-16 | 2017-09-21 | 三星電子株式会社Ｓａｍｓｕｎｇ Ｅｌｅｃｔｒｏｎｉｃｓ Ｃｏ．，Ｌｔｄ． | Heat exchanger and air conditioner |
| CN107388874A (en) * | 2017-08-10 | 2017-11-24 | 海信科龙电器股份有限公司 | A kind of heat exchange fin and finned heat exchanger |
| CN207456255U (en) * | 2017-09-13 | 2018-06-05 | 浙江盾安热工科技有限公司 | A kind of heat exchange fin and heat exchanger |
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| CN109737791A (en) * | 2018-12-29 | 2019-05-10 | 西安交通大学 | A kind of trapezoidal ripple and special-shaped endless tube structure composite fin |
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| CN110207530B (en) | 2020-06-12 |
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