CN102878850A - Foam metal fins and porous flat tube micro-channel heat exchanger with foam metal fins - Google Patents
Foam metal fins and porous flat tube micro-channel heat exchanger with foam metal fins Download PDFInfo
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- CN102878850A CN102878850A CN2012103340557A CN201210334055A CN102878850A CN 102878850 A CN102878850 A CN 102878850A CN 2012103340557 A CN2012103340557 A CN 2012103340557A CN 201210334055 A CN201210334055 A CN 201210334055A CN 102878850 A CN102878850 A CN 102878850A
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Abstract
The invention discloses foam metal fins and a porous flat tube micro-channel heat exchanger with the foam metal fins. The fins are arranged between adjacent flat tubes of the micro-channel heat exchanger; the fins consist of first fins and second fins which are made of foam metal; the first fins comprise two parallel thin layer structures; the second fins which are arranged at intervals are uniformly distributed between the two thin layer structures; and the second fins can be one of triangular prisms of which the sections are isosceles triangles, triangular prisms of which the sections are analogous isosceles triangles and the waist lines are arcs, quadrangular prisms of which the sections are isosceles trapezoids, and quadrangular prisms of which the sections are analogous isosceles trapezoids and the waist lines are arcs. The foam metal is applied to the fins of the micro-channel heat exchanger; through the through holes inside the foam metal, flowing air can produce complex three-dimensional flow, the heat exchange area at an air side is increased, and exchange coefficient and unit heat exchange capacity of the fins are increased, so that heat exchange efficiency and comprehensive performance of the micro-channel heat exchanger are effectively improved.
Description
Technical field
The present invention relates to a kind of heat exchange or heat-transfer equipment and parts thereof, in particular, relate to increase heat exchange or heat-transfer equipment and the parts thereof of heat transfer area structure.
Background technology
Originally micro-channel heat exchanger is that application is more in electronic heating element and small size gas turbine, has now expanded to air conditioning for automobiles, central air-conditioning and domestic air conditioning field, and it has a extensive future.Micro-channel heat exchanger is applied to have following advantage in the air-conditioning: heat transfer efficiency is high; Can make the volume-diminished of air-conditioning, weight saving; Do not use copper material expensive, shortage of resources; Can reduce the filling quantity of cold-producing medium etc.
But the many aluminum sheet of fin of existing micro-channel heat exchanger, easily bending, and usually make blinds punching form with increase heat transfer outside a tube area, however it is always limited to increase pipe outside heat exchange area on the plane.Particularly for micro-channel heat exchanger, because its caliber is less, cause the long-pending fin area that can increase in tube outside very limited.
Therefore, how to improve the heat exchange property of micro-channel heat exchanger, become the focus of current micro-channel heat exchanger research.
Summary of the invention
The present invention will solve is the technical problem that the heat exchange property of existing micro-channel heat exchanger has much room for improvement, a kind of foam metal fin is provided and has had the micro-channel heat exchanger of this fin, by novel fin configuration, can improve heat exchange efficiency and the combination property of micro-channel heat exchanger.
In order to solve the problems of the technologies described above, the present invention is achieved by following technical scheme:
A kind of foam metal fin, be arranged between the adjacent flat tube of micro-channel heat exchanger, the second fin that the first fin that this fin is made by foam metal and foam metal are made consists of, described the first fin comprises two laminate structures that are parallel to each other, be evenly equipped with the second fin that the interval arranges between two described laminate structures, described the second fin is selected from the tri-prismoid that the cross section is isosceles triangle, the cross section is that class isosceles triangle and its waist are the tri-prismoid of camber line, the cross section is the four prisms cylinder of isosceles trapezoid, the cross section is that class isosceles trapezoid and its waist are wherein a kind of of four prisms cylinder of camber line;
All between the side of two laminate structure the same faces of described the first fin, the base is all between the side of two laminate structure another sides of described the first fin on the summit of isosceles triangle or class isosceles triangle in the tri-prismoid of all described the second fins; All between the side of two laminate structure the same faces of described the first fin, longer base is all between the side of two laminate structure another sides of described the first fin on the shorter base of isosceles trapezoid or class isosceles trapezoid in the four prisms cylinder.
Described foam metal is wherein a kind of of foam copper, foamed aluminium, foam iron or nickel foam.
The aperture of described foam metal is 0.05 ~ 4mm.
The laminate structure thickness of described the first fin is 0.1 ~ 5mm.
The tri-prismoid of described the second fin or the height of column of four prisms cylinder are 5 ~ 20mm.
The base length of isosceles triangle or class isosceles triangle is 0.5 ~ 2mm in the tri-prismoid of described the second fin; The longer base length of isosceles trapezoid or class isosceles trapezoid is 0.5 ~ 2mm in the four prisms cylinder of described the second fin.
The summit of isosceles triangle or class isosceles triangle is 10 ~ 30mm to the vertical range on base in the tri-prismoid of described the second fin; The shorter base of isosceles trapezoid or class isosceles trapezoid is 10 ~ 30mm to the vertical range on longer base in the four prisms cylinder of described the second fin.
In the tri-prismoid of adjacent described the second fin in isosceles triangle or class isosceles triangle, the four prisms cylinder distance between the line of symmetry of isosceles trapezoid or class isosceles trapezoid be 1 ~ 2mm.
A kind of micro-channel heat exchanger comprises a plurality of flat tubes, is provided with above-mentioned foam metal fin between the adjacent described flat tube.
The invention has the beneficial effects as follows:
Foam metal is comprised of rigid backbone and interior bone hole, has excellent physical characteristic and good mechanical performance, and its proportion is little, be difficult for bending, specific area is large, the heat exchange heat-sinking capability is high.
The present invention is applied to foam metal the fin of micro-channel heat exchanger, the air that flows is by the via holes of foam metal inside, can produce complicated Three-dimensional Flow, temperature field and Flow Field Distribution that air is formed are more rational, increase the heat exchange area of air side, improve the coefficient of heat transfer and the unit exchange capability of heat of fin, thus Effective Raise micro-channel heat exchanger heat exchange efficiency and combination property.
The present invention becomes fin design the fin shape of different cross section form and interval to arrange simultaneously, can reduce the flow resistance of foam metal, further increase the air side heat exchange area, and between adjacent flat tube, form the passage of wedge shape, because the circulation area of passage Air is descending, air accelerates, and can strengthen heat exchange; The mutual use of the first fin and the second fin helps the integral manufacturing of fin, and the enhancing firmness of being combined with flat tube.
Description of drawings
Fig. 1 is the shape schematic diagram of six kinds of forms of the second fin provided by the present invention;
Wherein, (a) be that the cross section is the tri-prismoid of isosceles triangle;
(b) be that the cross section is that class isosceles triangle and its waist are the tri-prismoid of concave arc line;
(c) be that the cross section is that class isosceles triangle and its waist are the tri-prismoid of convex arc line;
(d) be that the cross section is the four prisms cylinder of isosceles trapezoid;
(e) be that the cross section is that class isosceles trapezoid and its waist are the four prisms cylinder of concave arc line;
(f) be that the cross section is that class isosceles trapezoid and its waist are the four prisms cylinder of convex arc line;
Fig. 2 is the structural representation of micro-channel heat exchanger provided by the present invention;
Fig. 3 is the B-B profile of Fig. 2;
Fig. 4 is that the part of A part sends out figure large among Fig. 2;
Fig. 5 is the side view of G direction among Fig. 4;
Fig. 6 is the C-C profile of Fig. 4;
Fig. 7 is when the second fin is Fig. 1 (a) form, the D-D profile of Fig. 4;
Fig. 8 is when the second fin is Fig. 1 (b) form, the D-D profile of Fig. 4;
Fig. 9 is when the second fin is Fig. 1 (e) form, and the part of A part sends out figure large among Fig. 2;
Figure 10 is the side view of H direction among Fig. 9;
Figure 11 is the E-E profile of Fig. 9;
Figure 12 is the F-F profile of Fig. 9.
Among the figure: 1, flat tube; 2, fin; 21, the first fins; 22, the second fins; 3, liquid trap; 4, distributing pipe.
The specific embodiment
For further understanding summary of the invention of the present invention, characteristics and effect, hereby exemplify following examples, and cooperate accompanying drawing to be described in detail as follows:
Present embodiment has disclosed a kind of foam metal fin and has had the micro-channel heat exchanger of this fin, and as shown in Figure 2, micro-channel heat exchanger comprises liquid trap 3 and the distributing pipe 4 at two ends, and liquid trap 3 and distributing pipe 4 are that cylinder and bottom surface radius are 10 ~ 40mm.Be provided with a plurality of flat tubes 1 between liquid trap 3 and the distributing pipe 4, the width of flat tube 1 is 10 ~ 30mm, highly is 1 ~ 2mm, and being shaped as of the hole on the flat tube 1 is square or circular.
As shown in Figure 3, be provided with fin 2 provided by the invention between the adjacent flat tube 1, this fin 2 is made of the first fin 21 and the second fin 22 two parts.The whole height of fin 2 has certain magnitude of interference than the high 0.1 ~ 0.5mm of distance between the adjacent flat tube 1, fin 2 can be plugged between the adjacent flat tube 1.In addition, the mounting means of fin 2 between adjacent flat tube 1 can also be local spot welding etc.
The material of the first fin 21 and the second fin 22 is foam metal, and foam metal can be selected foam copper, foamed aluminium, foam iron and nickel foam etc.Foam metal is comprised of rigid backbone and interior bone hole, has excellent physical characteristic and good mechanical performance, and its proportion is little, be difficult for bending, specific area is large, the heat exchange heat-sinking capability is high.The aperture of foam metal is preferably 0.05 ~ 4mm among the present invention.Foam metal can supply circulation of air, and mobile air can produce complicated Three-dimensional Flow by the through hole of foam metal fin, has increased the heat exchange area of heat exchanger air side, but the heat exchange property of Effective Raise heat exchanger.
As shown in Figure 4, the first fin 21 comprises two laminate structures that are parallel to each other, the thickness e of laminate structure=0.1 ~ 5mm.Being provided with the second fin 22, the second fins 22 between 21 two laminate structures of the first fin evenly distributes and the interval setting.The first fin 21 and the second fin 22 are integrated when making.
As shown in Figure 1, the shape of the second fin 21 is various, and specifically can select the cross section is the tri-prismoid of isosceles triangle, shown in Fig. 1 (a); The cross section is that class isosceles triangle and its waist are the tri-prismoid of camber line, and its mean camber line can be the concave arc line, and namely the two sides of tri-prismoid are cancave cambered surface, shown in Fig. 1 (b); Also can be the convex arc line, namely the two sides of tri-prismoid be convex globoidal, shown in Fig. 1 (c).It is the four prisms cylinder of isosceles trapezoid that the second fin 21 can also be selected the cross section, shown in Fig. 1 (d); The cross section is that class isosceles trapezoid and its waist are the four prisms cylinder of camber line, and its mean camber line can be the concave arc line, and namely the two sides of four prisms cylinder are cancave cambered surface, shown in Fig. 1 (e); Also can be the convex arc line, namely the two sides of four prisms cylinder be convex globoidal, shown in Fig. 1 (f).
Extremely shown in Figure 8 in conjunction with Fig. 4, when the shape of the second fin 22 is that the cross section is when being the tri-prismoid of isosceles triangle or class isosceles triangle, the summit of isosceles triangle or class isosceles triangle all is positioned at a side of the first fin 21 in the tri-prismoid, and the base all is positioned at the opposite side of the first fin 21.This moment, the basic parameter of the second fin 22 was as follows: the height a=5 ~ 20mm of tri-prismoid; The base length of isosceles triangle or class isosceles triangle, i.e. tri-prismoid bottom width c=0.5 ~ 2mm in the tri-prismoid; The summit of isosceles triangle or class isosceles triangle is to the vertical range d=10 on base ~ 30mm in the tri-prismoid, and is identical with the width of flat tube 1; The distance b of adjacent the second fin 22=1 ~ 2mm is as the criterion with the distance between isosceles triangle in the tri-prismoid or the class isosceles triangle line of symmetry.
Extremely shown in Figure 12 in conjunction with Fig. 9, when the shape of the second fin 22 is that the cross section is when being the four prisms cylinder of isosceles trapezoid or class isosceles trapezoid, the shorter base of isosceles trapezoid or class isosceles trapezoid all is positioned at a side of the first fin 21 in the prism, and longer base all is positioned at the opposite side of the first fin 21.This moment, the basic parameter of the second fin 22 was as follows: the height of four prisms cylinder is 5 ~ 20mm; The longer base length of isosceles trapezoid or class isosceles trapezoid in the four prisms cylinder, namely the four prisms cylinder bottom width is 0.5 ~ 2mm; The shorter base of isosceles trapezoid or class isosceles trapezoid is 10 ~ 30mm to the vertical range on longer base in the four prisms cylinder, and is identical with the width of flat tube 1; The distance of adjacent the second fin 22 is 1 ~ 2mm, is as the criterion with the distance between the line of symmetry of isosceles trapezoid in the four prisms cylinder or class isosceles trapezoid.
Although the above is described the preferred embodiments of the present invention by reference to the accompanying drawings; but the present invention is not limited to the above-mentioned specific embodiment; the above-mentioned specific embodiment only is schematic; be not restrictive; those of ordinary skill in the art is under enlightenment of the present invention; not breaking away from the scope situation that aim of the present invention and claim protect, can also make the concrete conversion of a lot of forms, these all belong within protection scope of the present invention.
Claims (9)
1. foam metal fin, be arranged between the adjacent flat tube of micro-channel heat exchanger, it is characterized in that, the second fin that the first fin that this fin is made by foam metal and foam metal are made consists of, described the first fin comprises two laminate structures that are parallel to each other, be evenly equipped with the second fin that the interval arranges between two described laminate structures, described the second fin is selected from the tri-prismoid that the cross section is isosceles triangle, the cross section is that class isosceles triangle and its waist are the tri-prismoid of camber line, the cross section is the four prisms cylinder of isosceles trapezoid, the cross section is that class isosceles trapezoid and its waist are wherein a kind of of four prisms cylinder of camber line;
All between the side of two laminate structure the same faces of described the first fin, the base is all between the side of two laminate structure another sides of described the first fin on the summit of isosceles triangle or class isosceles triangle in the tri-prismoid of all described the second fins; All between the side of two laminate structure the same faces of described the first fin, longer base is all between the side of two laminate structure another sides of described the first fin on the shorter base of isosceles trapezoid or class isosceles trapezoid in the four prisms cylinder.
2. a kind of foam metal fin according to claim 1 is characterized in that, described foam metal is wherein a kind of of foam copper, foamed aluminium, foam iron or nickel foam.
3. a kind of foam metal fin according to claim 1 is characterized in that, the aperture of described foam metal is 0.05 ~ 4mm.
4. a kind of foam metal fin according to claim 1 is characterized in that, the laminate structure thickness of described the first fin is 0.1 ~ 5mm.
5. a kind of foam metal fin according to claim 1 is characterized in that, the tri-prismoid of described the second fin or the height of column of four prisms cylinder are 5 ~ 20mm.
6. a kind of foam metal fin according to claim 1 is characterized in that, the base length of isosceles triangle or class isosceles triangle is 0.5 ~ 2mm in the tri-prismoid of described the second fin; The longer base length of isosceles trapezoid or class isosceles trapezoid is 0.5 ~ 2mm in the four prisms cylinder of described the second fin.
7. a kind of foam metal fin according to claim 1 is characterized in that, the summit of isosceles triangle or class isosceles triangle is 10 ~ 30mm to the vertical range on base in the tri-prismoid of described the second fin; The shorter base of isosceles trapezoid or class isosceles trapezoid is 10 ~ 30mm to the vertical range on longer base in the four prisms cylinder of described the second fin.
8. a kind of foam metal fin according to claim 1, it is characterized in that, in the tri-prismoid of adjacent described the second fin in isosceles triangle or class isosceles triangle, the four prisms cylinder distance between the line of symmetry of isosceles trapezoid or class isosceles trapezoid be 1 ~ 2mm.
9. a micro-channel heat exchanger comprises a plurality of flat tubes, it is characterized in that, is provided with foam metal fin as claimed in claim 1 between the adjacent described flat tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210334055.7A CN102878850B (en) | 2012-09-11 | 2012-09-11 | Foam metal fins and porous flat tube micro-channel heat exchanger with foam metal fins |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210334055.7A CN102878850B (en) | 2012-09-11 | 2012-09-11 | Foam metal fins and porous flat tube micro-channel heat exchanger with foam metal fins |
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| Publication Number | Publication Date |
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| CN102878850A true CN102878850A (en) | 2013-01-16 |
| CN102878850B CN102878850B (en) | 2014-04-09 |
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| CN201210334055.7A Active CN102878850B (en) | 2012-09-11 | 2012-09-11 | Foam metal fins and porous flat tube micro-channel heat exchanger with foam metal fins |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103743280A (en) * | 2014-01-21 | 2014-04-23 | 广东志高空调有限公司 | Foam metal fin with irregular disturbance holes for parallel flow heat exchanger |
| CN103968613A (en) * | 2014-05-27 | 2014-08-06 | 广东志高空调有限公司 | Micro-channel heat exchanger |
| CN104896968A (en) * | 2015-06-16 | 2015-09-09 | 中国石油大学(华东) | Metal foam finned tube heat exchanger |
| CN108317774A (en) * | 2018-01-31 | 2018-07-24 | 天津商业大学 | A kind of CO based on foam metal2Cooling evaporator |
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| US20050039894A1 (en) * | 2003-08-01 | 2005-02-24 | Viktor Brost | Vehicle radiator |
| JP2009204279A (en) * | 2008-02-29 | 2009-09-10 | Nippon Light Metal Co Ltd | Heat exchanger |
| CN101589285A (en) * | 2007-01-25 | 2009-11-25 | 国立大学法人东京大学 | Heat exchanger |
| CN201387254Y (en) * | 2009-03-19 | 2010-01-20 | 美的集团有限公司 | All-aluminum micro-channel heat exchanger |
| CN202734639U (en) * | 2012-09-11 | 2013-02-13 | 天津大学 | Foamed metal fin and porous flat tube micro-channel heat exchanger provided with same |
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2012
- 2012-09-11 CN CN201210334055.7A patent/CN102878850B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050039894A1 (en) * | 2003-08-01 | 2005-02-24 | Viktor Brost | Vehicle radiator |
| CN101589285A (en) * | 2007-01-25 | 2009-11-25 | 国立大学法人东京大学 | Heat exchanger |
| JP2009204279A (en) * | 2008-02-29 | 2009-09-10 | Nippon Light Metal Co Ltd | Heat exchanger |
| CN201387254Y (en) * | 2009-03-19 | 2010-01-20 | 美的集团有限公司 | All-aluminum micro-channel heat exchanger |
| CN202734639U (en) * | 2012-09-11 | 2013-02-13 | 天津大学 | Foamed metal fin and porous flat tube micro-channel heat exchanger provided with same |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103743280A (en) * | 2014-01-21 | 2014-04-23 | 广东志高空调有限公司 | Foam metal fin with irregular disturbance holes for parallel flow heat exchanger |
| CN103968613A (en) * | 2014-05-27 | 2014-08-06 | 广东志高空调有限公司 | Micro-channel heat exchanger |
| CN104896968A (en) * | 2015-06-16 | 2015-09-09 | 中国石油大学(华东) | Metal foam finned tube heat exchanger |
| CN108317774A (en) * | 2018-01-31 | 2018-07-24 | 天津商业大学 | A kind of CO based on foam metal2Cooling evaporator |
Also Published As
| Publication number | Publication date |
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| CN102878850B (en) | 2014-04-09 |
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