CN101726208A - copper fin - Google Patents
copper fin Download PDFInfo
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- CN101726208A CN101726208A CN200810201355A CN200810201355A CN101726208A CN 101726208 A CN101726208 A CN 101726208A CN 200810201355 A CN200810201355 A CN 200810201355A CN 200810201355 A CN200810201355 A CN 200810201355A CN 101726208 A CN101726208 A CN 101726208A
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- fin
- copper
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- joining
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Abstract
The invention discloses a copper fin comprising a fin unit. The edges of both sides of the fin unit are provided with two semi-circles used for installing pipe barrels. The copper fin is characterized in that the middle of the fin unit is provided with an inclined joint metal copper fin, and bar slits are formed at both sides of the semi-circles and in directions parallel to the edges of the fin unit are respectively provided with. The invention avoids the generation of a large number of mildews in a fin tube heat exchanger, increases the heat conduction amount of fins, greatly reduces the cold and hot alternating frequency attenuation rate of the fin tube heat exchanger and increases the coefficient of heat transfer, further improving the long-acting performance of the whole fin tube heat exchanger.
Description
Technical field:
What the present invention relates to is a kind of fin, particularly be a kind of copper fin of efficient performance.
Background technology:
As everyone knows, air-conditioning plays an important role in daily life, and winter air-conditioning can be used for warming oneself, and summer air-conditioning can be used for lowering the temperature, and air-conditioning provides comfortable environment for our life.Therefore, people wish to have bought the air-conditioning of high-quality when buying air-conditioning.
Finned tube exchanger is important components in the air-conditioning system, and heat exchange that it is good and drooping characteristic are important to the high-performance that keeps system.The factor that influences the long-acting performance of heat exchanger mainly comprises the number of times and go mouldy etc. of colding and heat succeed each other.At present, finned tube exchanger is general, and what adopt is the aluminum finned tube heat exchanger, because evaporimeter moves under the wet worker's situation of being everlasting, and moistening, the dark environment good growing environment of mould normally, so grow a large amount of moulds easily in the air side of evaporimeter.Mould sticks to fin surface, can increase the fin surface roughness, reduces spacing of fin, increases heat exchanger air side thermal resistance, has reduced the heat conduction amount of fin, thereby has increased the heat exchanger air wide pre. drop, and caused the heat exchange amount to descend.Therefore, be necessary to study cold and heat succeed each other number of times and the long-lasting influence of mould heat exchanging device.
In addition, it is exactly a kind of effective ways that air side is conducted heat of strengthening that the fin of strengthening air-condition heat exchanger is cracked, and undergoes phase transition heat exchange in pipe, is heat conduction between pipe and the fin, and fin and incoming flow carry out forced-convection heat transfer.The boundary layer thickness of fin increases on streamwise, and causes coefficient of heat transfer streamwise to reduce.Can destroy boundary layer on the fin cracking on the fin, reduce the thickness in boundary layer, to increase the coefficient of heat transfer, enhanced heat exchange.Air-condition heat exchanger fin generally has flat fin and corrugated plate form, and the at present existing air-condition heat exchanger fin of having researched and developed efficiently cracks and is single bridge sheet form (as shown in Figure 1) of cracking, it is to have 3 road flush joints 10 in heat exchanger tube both sides and fin edges parallel direction, the high 0.6mm of the seam of this flush joint 10, stitch wide 1.8mm, stitch long 10.0mm.Though various performances all are superior to the fin of flat fin and corrugated plate form, crack the 3rd road seam of form of single bridge sheet is no longer obvious to the effect of destroying the fin boundary layer, thereby heat exchange property also is not very high.So; at above three kinds of fin forms air-conditioning system startup-shutdown continually in actual motion, heat exchanger is worked under the environment that colds and heat succeed each other for a long time, and the coefficient of heat transfer is lower; face velocity has the bigger loss of pressure drop at fin, causes its heat exchange property to fail gradually.The principal element that influences finned heat exchanger is crack height, width, length and fin thickness, simultaneously spacing of fin, also heat exchange has influence to row's spacing to fin.For enhanced heat exchange, improve heat exchange property, therefore, need remain the generation of new fin efficiently.
Summary of the invention:
The object of the invention provides a kind of copper fin of efficient performance, with solve existing fin be applied on the heat exchanger because cold and heat succeed each other and mould generation and prior art in structural deficiency influence the difficult problem of heat exchange property.
To achieve these goals, the present invention is achieved through the following technical solutions:
Copper fin comprises a fin, and described fin unit dual-side is characterized in that along being provided with two semicircles that are used for mounting sleeve described fin unit is that the centre has the R-joining copper sheet, is used to destroy the boundary layer in fin unit stage casing, improves the coefficient of heat transfer; Also have the bar shaped seam respectively in semicircle both sides and fin edges parallel direction, be used to destroy the boundary layer at fin unit edge.
Further, the central point center of above-mentioned two semicircles and described fin unit is symmetrical arranged.
Further, the diameter of above-mentioned semicircle is 7.0 ± 0.5mm, and the radius of this semicircle should be slightly larger than sleeve pipe radius 0.05～0.1mm.
Further, described fin unit is a rectangular fin, and the thickness of this fin unit is 0.08mm ± 0.02mm, and length is 25.4mm ± 0.5mm, and wide is 10.5 ± 0.5mm.
Further, above-mentioned bar shaped is stitched to and is provided with less together, is used to destroy the boundary layer of fin edges, improves heat exchange efficiency.
Further, the long 5.0 ± 0.5mm of the seam of above-mentioned bar shaped seam stitches wide 1.8～2.4mm, stitches high 0.6 ± 0.05mm.
Further, above-mentioned R-joining is a rectangular slits, and this rectangle is arranged between two semicircles, overlaps direction with the round heart line of two halves; The length of described R-joining is parallel with the round heart line of two halves, and the wide and circle center line connecting of R-joining is vertical, and the flow direction of the crack direction and the air of this R-joining is perpendicular, thereby has increased the heat exchange effect.
Further, the seam length of above-mentioned R-joining is 5.0～6.0mm, and stitching wide is 2.40 ± 0.05mm, and the seam height is 0.6 ± 0.05mm.
It is as follows that the present invention has adopted technique scheme to be applied to the beneficial effect that compared with prior art has on the heat exchanger:
1, the present invention has adopted copper fin to replace aluminium fin of the prior art, greatly reduce finned tube exchanger in the number of times rate of decay that colds and heat succeed each other, improved the long-acting performance of heat exchanger, again because copper has the effect of better mould fungus inhibition growth, thereby a large amount of moulds generations in the finned tube exchanger have been avoided, improve the heat conduction amount of fin, increased the heat exchange amount, and then improved the long-acting performance of whole finned tube exchanger.
2, the present invention has rectangular slits between two semicircles that heat exchanger tube is installed, the flow direction of the direction of cracking and air is perpendicular, effectively destroyed the boundary layer in fin stage casing, increased the heat exchange effect of fin, simultaneously, fin edges also has the bar shaped seam respectively, strengthens the effect of destroying the fin edges boundary layer, reduce pressure drop, improved the coefficient of heat transfer.
Description of drawings:
Further specify the present invention below in conjunction with the drawings and specific embodiments.
Fig. 1 is existing fin structure schematic diagram,
Fig. 2 is a fin unit structural representation of the present invention,
Fig. 3 is embodiments of the invention one,
Fig. 4 is embodiments of the invention two.
The specific embodiment:
For technological means, creation characteristic that the present invention is realized, reach purpose and effect is easy to understand, below in conjunction with concrete diagram, further set forth the present invention.
With reference to figure 2, copper fin comprises fin unit 1, and this fin is that metallic copper material is made rectangular fin, has two semicircles 12 that are used for mounting sleeve on fin unit 1 dual-side edge.Among the present invention, fin unit 1 is 0.08mm ± 0.02mm for thickness, and length is 25.4mm ± 0.5mm, and wide is the metallic copper fin of 10.5 ± 0.5mm.Two semicircles 12 are about the central point center symmetry of fin unit 1, two semicircles 12 that are merged at two fin units 1 constitute one just circle can be used for installing sleeve pipes such as heat exchanger tube, copper pipe, the diameter of this sleeve pipe is 7.0mm, external diameter is 7.0+0.1mm or 7.0+0.2mm, and the radius of two semicircles 12 should be slightly larger than sleeve pipe radius 0.05～0.1mm.For effectively destroying the boundary layer in fin unit 1 stage casing, strengthen the heat exchange effect, between two semicircles 12, overlap direction with two semicircles, 12 circle center line connectings and also have a rectangle R-joining 13, the length of this R-joining 13 is 5.0 ± 0.5mm, and parallel with two semicircles, 12 circle center line connectings, and the wide of R-joining 13 is 1.80 ± 0.05mm, and vertical with circle center line connecting, the seam height is 0.6 ± 0.05mm; The flow direction of crack direction and air is perpendicular, is used for increasing the heat exchange effect.In addition, the bar shaped that also has respectively at least with fin unit 1 edge parallel direction in semicircle 12 both sides stitches 11, the long 5.0 ± 0.5mm of the seam of this bar shaped seam 11, the seam wide region is 1.8～2.4mm, stitch high 0.6 ± 0.05mm, be used for destroying the boundary layer at fin unit 1 edge, increase the coefficient of heat transfer.
As Fig. 2, shown in Figure 3, as a further improvement on the present invention, in order to reach better heat exchange effect, should increase the height that cracks as far as possible, long and wide, but be subjected to fin structure intensity and actual influence of making, above-mentioned parameter can not be obtained too big, therefore in present embodiment one, for getting best heat exchange effect, the present invention has 2 road bar shaped seams 11 in sleeve pipe 14 both sides and the fin unit 1 edge parallel direction that semicircle 12 is formed, the long 9.0mm of being of seam after the bar shaped of two fin units 1 seam 11 merges in present embodiment one, the seam wide region is 1.8mm, stitches high 0.6mm.Whole fin unit 1 thickness is 0.08mm, and length is 25.4mm, and wide is 10.5mm.The spacing that two pipes of heat exchanger tube are installed is 19.0mm, row's spacing is that horizontal two tube pitch are 12.7mm, in order to strengthen heat exchange, being applied to the employed external diameter of evaporimeter in this example is the riffled tube of 7.0mm, middle pipe 14 external diameters of fin can be taken as 7.0+0.1mm or 7.0+0.2mm, and middle R-joining 13 seams of fin unit 1 are long to be 5.6mm, and stitching wide is 2.4mm, the seam height is 0.6mm, and fin unit 1 spacing is 1.5mm.
As shown in Figure 4, as a further improvement on the present invention, in addition, in present embodiment two, have bar shaped seam 21 in the semicircle both sides with fin unit 1 edge parallel direction, seam after the two bar shapeds seam 21 that this bar shaped seam 21 is positioned at two fin units on the straight line of the more than half round hearts of vertical fins cell edges merges is long to be 9.0mm, and stitching wide is 2.4mm, stitches high 0.6mm.Whole fin thickness is 0.08mm, and length is 25.4mm, and wide is 10.5mm.The spacing that two pipe boxes 22 of heat exchanger tube are installed is 19.0mm, row's spacing is that horizontal two pipe boxes, 22 spacings are 12.7mm, in order to strengthen heat exchange, being applied to employed pipe box 22 external diameters in this example is the riffled tube of 7.0mm, the middle external diameter of pipe of fin can be taken as 7.0+0.1mm or 7.0+0.2mm, and middle R-joining 23 seams of fin unit 1 are long to be 5.0mm, and stitching wide is 2.4mm, the seam height is 0.6mm, and spacing of fin is 1.6mm.
The maximum characteristics of the present invention have adopted copper fin to replace aluminium fin of the prior art, greatly reduce finned tube exchanger in the number of times rate of decay that colds and heat succeed each other, improved the long-acting performance of heat exchanger, again because copper has the effect of better mould fungus inhibition growth, thereby a large amount of moulds generations in the finned tube exchanger have been avoided, improve the heat conduction amount of fin, increased the heat exchange amount, and then improved the long-acting performance of whole finned tube exchanger.Simultaneously, by comparing Copper Foil, normal aluminium foil and antibiotic coating aluminium foil, Copper Foil has good bacteriostasis to Escherichia coli, Legionella, staphylococcus aureus and Candida albicans; From the environmental sanitation angle, copper is best antibacterial materials such as air-condition heat exchanger copper pipe, fin.With respect to aluminium fin air-conditioning, the fungistatic effect of copper fin air-conditioning is fairly obvious.
Be to install as another characteristics of the present invention between two semicircles of heat exchanger tube and have rectangular slits, the flow direction of the direction of cracking and air is perpendicular, effectively destroyed the boundary layer in fin stage casing, increased the heat exchange effect of fin, simultaneously, fin edges also has the bar shaped seam respectively, strengthens the effect in the boundary layer of destroying fin, reduce pressure drop, improved the coefficient of heat transfer.
More than show and described basic principle of the present invention and principal character and advantage of the present invention.The technical staff of the industry should understand; the present invention is not restricted to the described embodiments; that describes in the foregoing description and the specification just illustrates principle of the present invention; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications, and these changes and improvements all fall in the claimed scope of the invention.The claimed scope of the present invention is defined by appending claims and equivalent thereof.
Claims (8)
1. copper fin, comprise fin unit, described fin unit dual-side is characterized in that along being provided with two semicircles that are used to install socket, described fin unit also has the bar shaped seam respectively for the middle copper sheet that has R-joining, described semicircle both sides and fin unit edge parallel direction.
2. copper fin according to claim 1 is characterized in that, the central point center of described two semicircles and described fin unit is symmetrical arranged.
3. copper fin according to claim 1 is characterized in that, the diameter of described semicircle is 7.0 ± 0.5mm.
4. copper fin according to claim 1 is characterized in that, described fin unit is a rectangular fin, and the thickness of this fin is 0.08 ± 0.02mm, and length is 25.4 ± 0.5mm, and wide is 10.5 ± 0.5mm.
5. a kind of copper fin according to claim 1 is characterized in that, described bar shaped is stitched to and is provided with less together.
6. copper fin according to claim 5 is characterized in that, the long 5.0 ± 0.5mm of the seam of described bar shaped seam, and the seam wide region is 1.8～2.4mm, stitches high 0.6 ± 0.05mm.
7. copper fin according to claim 1 is characterized in that, described R-joining is a rectangle, and be arranged between two semicircles, overlap direction with the round heart line of two halves, the length of described R-joining is parallel with the round heart line of two halves, and the wide and circle center line connecting of described R-joining is vertical.
8. copper fin according to claim 7 is characterized in that, the long scope of the seam of described R-joining is 5.0～6.0mm, and stitching wide is 2.40 ± 0.05mm, and the seam height is 0.6 ± 0.05mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810201355A CN101726208A (en) | 2008-10-17 | 2008-10-17 | copper fin |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810201355A CN101726208A (en) | 2008-10-17 | 2008-10-17 | copper fin |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101726208A true CN101726208A (en) | 2010-06-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200810201355A Pending CN101726208A (en) | 2008-10-17 | 2008-10-17 | copper fin |
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| CN (1) | CN101726208A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107131774A (en) * | 2017-05-25 | 2017-09-05 | 合肥皖化电泵有限公司 | A kind of stove water pump heat exchanger with high-efficiency radiating fin |
-
2008
- 2008-10-17 CN CN200810201355A patent/CN101726208A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107131774A (en) * | 2017-05-25 | 2017-09-05 | 合肥皖化电泵有限公司 | A kind of stove water pump heat exchanger with high-efficiency radiating fin |
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Open date: 20100609 |