CN104048545A - Rectangular flat-tooth finned tube and heat exchange tube bundle of rectangular flat-tooth finned tube - Google Patents
Rectangular flat-tooth finned tube and heat exchange tube bundle of rectangular flat-tooth finned tube Download PDFInfo
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- CN104048545A CN104048545A CN201410290426.5A CN201410290426A CN104048545A CN 104048545 A CN104048545 A CN 104048545A CN 201410290426 A CN201410290426 A CN 201410290426A CN 104048545 A CN104048545 A CN 104048545A
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- flat tooth
- tube
- flat
- rectangle
- finned tube
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Abstract
The invention discloses a rectangular flat-tooth finned tube and a heat exchange tube bundle of the rectangular flat-tooth finned tube. The rectangular flat-tooth finned tube comprises a base tube part and a fin part. The fin part comprises a plurality of rectangular flat-tooth fins which are respectively connected to the outer wall of the base tube part in the axial direction of the base tube part and at preset intervals. Each rectangular fin comprises a substrate, a plurality of flat teeth and a plurality of open slots, wherein the substrate is fixedly arranged on the outer wall, the flat teeth are connected with the substrate into a whole, and each open slot is formed between every two adjacent flat teeth. The flat teeth are arranged on two lateral sides, in the direction parallel to the flow direction of airflow outside a base tube, of the rectangular fins. By the adoption of the structure of the fin part, a discontinuous heat exchange surface is provided, and the heat exchange enhancement performance of an existing rectangular finned tube is further improved.
Description
Technical field
The invention belongs to finned tube field, be specifically related to the flat tooth finned tube of a kind of rectangle and finned tube heat-exchanging tube bundle thereof.
Background technology
The finned tube of the general vial overcoat dress of rectangular fin pipe rectangle transverse fin, the rectangular fin pipe of steel is once for early stage coal-burning boiler coal economizer.The rectangular fin pipe of extensive use is at present for to be set with rectangular fin outward at elliptical tube or flat tube, being called rectangular fin elliptical tube or rectangular fin flat tube, is the important heat exchange element in the heat-exchanger rigs such as large-scale power station air cooling tubes condenser, power station steam air heater, automobile radiators and A/C evaporator condenser.
Common rectangular fin pipe is arranged in parallel and is formed by continuous straight rectangular fin at present, spacing of fin is had relatively high expectations, if spacing of fin is too small, fin is to managing the excessively phenomenon of " rectification " of outer mobile existence, fin surface exchange capability of heat is obviously reduced, be unfavorable for the increase of heat transfer effect, spacing of fin is excessive, can seriously reduce the wing ratio of finned tube.
For further improving the enhanced heat exchange performance of rectangular fin pipe, in prior art, there is a kind of measure for to open circular hole on rectangular fin, in Research Literature, also discussed at fin surface and opened rectangular opening.Yet it is limited to the raising of finned tube enhanced heat exchange performance that application and result of study show in fin surface perforate, when this is mainly too small because of perforate, fin surface is not obvious near flow disturbance fin, and fin surface is still the feature of continuous strand straight fins heat exchange; And perforate is when enough large, although fin side liquid disturbance and be laterally mixed to get to strengthen can make fin lose too much heat exchange area.Therefore, adopt the mode of carrying out perforate in fin portion, very undesirable for enhanced heat exchange effect.
Summary of the invention
The problem existing for solving above-mentioned rectangular fin pipe, the present invention, by providing a kind of discontinuous form discontinuous heat exchange surface, further improves the enhanced heat exchange performance of existing rectangular fin pipe.
In order to achieve the above object, the present invention has adopted following technical scheme:
< structure one >
The invention provides the flat tooth finned tube of a kind of rectangle, there is such feature, comprising: base tube portion, in a tubular form; And fin portion, comprise multi-disc and along base tube portion, axially with preset space length, be connected to the rectangular fin on the outer wall of base tube portion respectively, wherein, every rectangular fin comprises the substrate being fixedly installed on outer wall, a plurality of flat tooth being connected with substrate and a plurality of open slot being formed between every two adjacent flat teeth, and a plurality of flat teeth are arranged on substrate and parallel in the dual-side portion in direction with the outer air flow direction of base tube.
In the flat tooth finned tube of rectangle provided by the invention, can also there is such feature: wherein, any one in base tube is shaped as cylindrical, oval tubulose, flat tube shape.
In the flat tooth finned tube of rectangle provided by the invention, can also there is such feature: wherein, every flat tooth fin of adjacent two rectangles parallels.
In the flat tooth finned tube of rectangle provided by the invention, can also there is such feature: wherein, the apical margin on the top of flat tooth is any one shape being in trapezoidal, circular arc, zigzag and waveform.
In the flat tooth finned tube of rectangle provided by the invention, can also there is such feature: wherein, the sidewall of flat tooth has any one in rough surface and indenture or groove.
< structure two >
Further, the present invention also provides the flat tooth finned tube of a kind of rectangle heat-exchanging tube bundle, has such feature, comprising: at least three flat tooth finned tubes of rectangle, the flat tooth finned tube of rectangle heat-exchanging tube bundle is in-line arrangement, is staggered in arrangement and any one in arranging of unequal-interval.
Effect and the effect of invention
According to the flat tooth finned tube of rectangle involved in the present invention, because fin portion is arranged on the outer wall of base tube portion, extend the outside of a plurality of flat teeth directional base tube being connected with substrate in fin portion, and form open slot between every two adjacent flat teeth, make fin surface form the discontinuous heat exchange surface of discontinuous form, on this discontinuous form heat exchange surface, fluid boundary layer constantly generates and destroys, and Development of Boundary Layer section exchange capability of heat is stronger, thereby the heat exchange property of finned tube is better, the heat exchange area forming because of this open slot is greater than the heat exchange area of the part fin side surface that open slot itself loses, so the formation of open slot not only can utilize the enhanced heat exchange principle of discontinuous form noncontinuous surface to improve the fin surface coefficient of heat transfer, also can not cause the minimizing of fin heat exchange area simultaneously, thereby further improve the flat tooth finned tube of rectangle enhanced heat exchange performance, and the flat tooth fin structure of rectangle strengthens the horizontal mixing of air-flow between wing, thereby can further dwindle spacing of fin under the prerequisite that improves finned tube enhanced heat exchange performance, thereby further improve the wing ratio of heat exchanger tube, make the flat tooth finned tube of rectangle there is obvious enhanced heat exchange advantage.
Accompanying drawing explanation
Fig. 1 is the structural representation of the flat tooth finned tube of rectangle heat-exchanging tube bundle in embodiments of the invention one;
Fig. 2 is the structural representation of the flat tooth finned tube of rectangle in embodiments of the invention one;
Fig. 3 is the plan structure schematic diagram of the flat tooth finned tube of rectangle in embodiments of the invention one;
Fig. 4 is the structural representation along the flat tooth finned tube of the viewed rectangle of A direction in Fig. 2;
Fig. 5 is the structural representation along the flat tooth finned tube of the viewed rectangle of B direction in Fig. 2
Fig. 6 (a) is the structural representation of overlooking of the flat tooth finned tube of rectangle in variation one of the present invention;
Fig. 6 (b) is the structural representation of overlooking of the flat tooth finned tube of rectangle in variation two of the present invention;
Fig. 7 is the structural representation of flat tooth in variation three of the present invention;
Fig. 8 is the structural representation of flat tooth in variation four of the present invention;
Fig. 9 is the structural representation of flat tooth in variation five of the present invention;
Figure 10 is the structural representation of flat tooth in variation six of the present invention;
Figure 11 is the structural representation of flat tooth in variation seven of the present invention;
Figure 12 is the structural representation of flat tooth in variation eight of the present invention;
Figure 13 is the structural representation of flat tooth in variation nine of the present invention;
Figure 14 is the structural representation of flat tooth in variation ten of the present invention;
Figure 15 is the structural representation of flat tooth in variation 11 of the present invention;
Figure 16 is the structural representation of flat tooth in variation 12 of the present invention;
Figure 17 is the structural representation of flat tooth in variation 13 of the present invention;
Figure 18 is the structural representation of flat tooth in variation 14 of the present invention; And
Figure 19 is the structural representation of flat tooth in variation 15 of the present invention;
The specific embodiment
For technological means, creation characteristic that the present invention is realized, reach object and effect is easy to understand, following examples are specifically addressed the present invention by reference to the accompanying drawings.
Embodiment mono-
Fig. 1 is the structural representation of the flat tooth finned tube of rectangle heat-exchanging tube bundle in embodiments of the invention one.
As shown in Figure 1, the flat tooth finned tube of rectangle heat-exchanging tube bundle 100 comprises 3 flat tooth finned tubes 200 of the rectangle being staggered in arrangement mutually that are arranged in two row structures.
Fig. 2 is the structural representation of the flat tooth finned tube of rectangle in embodiments of the invention one.
As shown in Figure 2, the flat tooth finned tube 200 of rectangle comprises: base tube portion 1 and fin portion 2.
Base tube portion 1 is tubular, is inside filled with fluid interchange working medium.Fin portion 2 be parallel to each other and with a determining deviation along on the outer wall that is axially disposed within base tube portion 1 of base tube portion 1.
According to the difference of application scenario, the diameter range of base tube portion 1 can be between 10 millimeters and 1000 millimeters, and the length of fin portion 2 or width range can be between 40 millimeters to 4000 millimeters.
Fig. 3 is the plan structure schematic diagram of the flat tooth finned tube of rectangle in embodiments of the invention one.
As shown in Figure 3, fin portion 2 comprises: substrate 3, and the open slot 5 between flat tooth 4 and flat tooth 4, the peaceful tooth 4 of substrate 3 forms noncontinuous surface.
The rectangle steel band that fin portion 2 is the Intermediate Gray circular hole of 0.01 millimeter to 10 millimeters by thickness is made, before the outer wall with base tube portion 1 is connected, the long side of rectangle steel band carries out partial cut at a certain distance by tooth punching, substrate 3 and a plurality of rectangle gear piece of continuous one after tooth punching, have been formed, the width of rectangle gear piece is between 2 millimeters to 200 millimeters, and the length of rectangle gear piece is between 4 millimeters to 400 millimeters.
Fig. 4 is the structural representation along the flat tooth fin of the viewed rectangle of A direction portion in Fig. 3.
As shown in Figure 4,6 is the flat flank portion in fin portion 2, flat flank portion comprises the open slot 5 between flat tooth 4 and flat tooth 4, the length range of flat flank portion 6 can be between 40 millimeters to 4000 millimeters, the side portion of the substrate at flat flank portion 6 places parallels with base tube portion 1 outer air flow direction, thereby in Fig. 1, can find out, the fin portion 2 of air flow direction and the flat tooth finned tube 200 of each rectangle is all this type of relation.
Fig. 5 is the structural representation along the flat tooth fin of the viewed rectangle of B direction portion in Fig. 3.
As shown in Figure 5,7 is the flat side in fin portion 2, and the length range of flat side 7 can be between 40 millimeters to 4000 millimeters.
Shown in Fig. 4 and Fig. 5, base tube portion 1 is in fin portion 2.
The effect of embodiment and effect
The flat tooth finned tube of the rectangle heat-exchanging tube bundle providing according to embodiment mono-is staggered in arrangement and is formed by the flat tooth finned tube of a plurality of rectangles, in the flat tooth finned tube of rectangle, because fin portion is arranged on the outer wall of base tube portion, extend the outside of a plurality of flat teeth directional base tube being connected with substrate in fin portion, and form open slot between every two adjacent flat teeth, make fin surface form the discontinuous heat exchange surface of discontinuous form, on this discontinuous form heat exchange surface, fluid boundary layer constantly generates and destroys, and Development of Boundary Layer section exchange capability of heat is stronger, thereby finned tube heat exchange property is better, the heat exchange area forming because of this open slot is greater than the heat exchange area of the part fin side surface that open slot itself loses, so the formation of open slot not only can utilize the enhanced heat exchange principle of discontinuous form noncontinuous surface to improve the fin surface coefficient of heat transfer, also can not cause the minimizing of fin heat exchange area simultaneously, thereby further improve the flat tooth finned tube of rectangle enhanced heat exchange performance, and the flat tooth fin structure of rectangle strengthens the horizontal mixing of air-flow between wing, thereby can further dwindle spacing of fin under the prerequisite that improves finned tube enhanced heat exchange performance, thereby further improve the wing ratio of heat exchanger tube, make the flat tooth finned tube of rectangle there is obvious enhanced heat exchange advantage.
Certainly the flat tooth finned tube of rectangle and finned tube heat-exchanging tube bundle thereof involved in the present invention is not merely defined in structure in the present embodiment.
Embodiment mono-and the flat tooth finned tube of the rectangle heat-exchanging tube bundle providing are staggered in arrangement and are formed by the flat tooth finned tube of a plurality of identical rectangles, and the flat tooth finned tube of rectangle heat-exchanging tube bundle certainly involved in the present invention can also be comprised of or unequal-interval is arranged and formed the flat tooth finned tube of a plurality of identical rectangles in-line arrangement.
In embodiment mono-, fin portion is manufactured by steel band, and in the flat tooth finned tube of rectangle the present invention relates to, fin portion can also be any one soft metal band manufactures such as copper alloy or aluminium alloy.
The base tube portion of the flat tooth finned tube of rectangle that embodiment mono-provides is cylindrical, and in the flat tooth finned tube of rectangle provided by the invention, the shape of base tube portion can also be oval tubulose or flat tube shape, sees variation one and variation two.
In the flat tooth finned tube of rectangle providing at embodiment mono-, the top and bottom sidewall of flat tooth is smooth surface, in the flat tooth finned tube of rectangle provided by the invention, flat tooth can also have the inconsistent apical margin of height or rough surface, sees that variation three is to variation 15.
Variation one
In this variation one, for embodiment mono-in identical structure, give identical symbol, and omit identical explanation.
Fig. 6 (a) is the plan structure schematic diagram of the flat tooth finned tube of rectangle in variation one of the present invention.
As shown in Fig. 6 (a), in the flat tooth finned tube 300 of rectangle, being shaped as of base tube portion 301 is oval tubular.
Variation two
Same, in this variation two, for embodiment mono-in identical structure, give identical symbol, and omit identical explanation.
Fig. 6 (b) is the plan structure schematic diagram of the flat tooth finned tube of rectangle in variation two of the present invention.
As shown in Fig. 6 (b), in the flat tooth finned tube 400 of rectangle, being shaped as of base tube portion 401 is flat tube shape.
The effect of variation one and variation two
The flat tooth finned tube of rectangle providing according to variation one and variation two, becomes the shape of base tube into oval tubular or flat tube shape by tubular, can make fluid resistance reduce, and enhanced heat exchange effect is more excellent.
Variation three
Same, in this variation three, for embodiment mono-in identical structure, give identical symbol, and omit identical explanation.
Fig. 7 is the structural representation of flat tooth in variation three of the present invention.
As shown in Figure 7, the top of flat tooth 7 has the apical margin 111 of trapezoidal shape.
Variation four
Same, in this variation four, for embodiment mono-in identical structure, give identical symbol, and omit identical explanation.
Fig. 8 is the structural representation of flat tooth in variation four of the present invention.
As shown in Figure 8, the top of flat tooth 12 has the apical margin 121 of circular arc.
Variation five
Same, in this variation five, for embodiment mono-in identical structure, give identical symbol, and omit identical explanation.
Fig. 9 is the structural representation of flat tooth in variation five of the present invention.
As shown in Figure 9, the top of flat tooth 13 has corrugated apical margin 131.
Variation six
Same, in this variation six, for embodiment mono-in identical structure, give identical symbol, and omit identical explanation.
Figure 10 is the structural representation of flat tooth in variation six of the present invention.
As shown in figure 10, the top of flat tooth 14 has zigzag apical margin 141.
Variation three is to the effect of variation six
The rectangular panels finned tube providing according to variation three to variation six, arranges rugged apical margin to strengthen the gas disturbance to fin side, with enhanced heat exchange effect by the top at flat tooth.
Variation seven
Same, in this variation seven, for embodiment mono-in identical structure, give identical symbol, and omit identical explanation.
Figure 11 is the structural representation of flat tooth in variation seven of the present invention.
As shown in figure 11, the two side of flat tooth 21 all has the indenture 211 of grid-shaped.
Variation eight
Same, in this variation eight, for embodiment mono-in identical structure, give identical symbol, and omit identical explanation.
Figure 12 is the structural representation of flat tooth in variation eight of the present invention.
As shown in figure 12, the two side of flat tooth 22 all has lambdoid indenture 221.
Variation nine
Same, in this variation nine, for embodiment mono-in identical structure, give identical symbol, and omit identical explanation.
Figure 13 is the structural representation of flat tooth in variation nine of the present invention.
As shown in figure 13, the two side of flat tooth 23 all has the indenture 231 of strip.
Variation ten
Same, in this variation ten, for embodiment mono-in identical structure, give identical symbol, and omit identical explanation.
Figure 14 is the structural representation of flat tooth in variation ten of the present invention.
As shown in figure 14, the two side of flat tooth 24 all has corrugated indenture 241.
Variation 11
Same, in this variation 11, for embodiment mono-in identical structure, give identical symbol, and omit identical explanation.
Figure 15 is the structural representation of flat tooth in variation 11 of the present invention.
As shown in figure 15, the two side of flat tooth 25 all has the groove 251 of yi word pattern.
Variation 12
Same, in this variation 12, for embodiment mono-in identical structure, give identical symbol, and omit identical explanation.
Figure 16 is the structural representation of flat tooth in variation 12 of the present invention.
As shown in figure 16, the two side of flat tooth 26 all has cross groove 261.
Variation 13
Same, in this variation 13, for embodiment mono-in identical structure, give identical symbol, and omit identical explanation.
Figure 17 is the structural representation of flat tooth in variation 13 of the present invention.
As shown in figure 17, a groove hole 271 is all had in the two side of flat tooth 27.
Variation 14
Same, in this variation 14, for embodiment mono-in identical structure, give identical symbol, and omit identical explanation.
Figure 18 is the structural representation of flat tooth in variation 14 of the present invention.
As shown in figure 18, the two side of flat tooth 28 all has round hole 281.
Variation 15
Same, in this variation 15, for embodiment mono-in identical structure, give identical symbol, and omit identical explanation.
Figure 19 is the structural representation of flat tooth in variation 15 of the present invention.
As shown in figure 19, the two side of flat tooth 29 all has rectangle and cracks 291.
Variation three is to the effect of variation 15
In the rectangular panels finned tube providing according to variation seven to variation 12, by the two side at flat tooth, indenture or groove are set to have formed rough surface on two side, these rough surfaces make the surface area of two side become large, strengthen the flow perturbation of the both sides of flat tooth, strengthened heat transfer effect.
Claims (6)
1. the flat tooth finned tube of rectangle, is characterized in that, comprising:
Base tube portion, in a tubular form; And
Fin portion, comprise multi-disc respectively along described base tube portion axially with preset space length, be connected to the rectangular fin on the outer wall of described base tube portion,
Wherein, every described rectangular fin comprises the substrate being fixedly installed on described outer wall, a plurality of flat tooth being connected with described substrate and a plurality of open slot being formed between every two adjacent flat teeth,
Described a plurality of flat tooth is arranged on described substrate and parallels in the dual-side portion in direction with the outer air flow direction of base tube.
2. the flat tooth finned tube of rectangle according to claim 1, is characterized in that:
Wherein, described base tube is shaped as any one in cylindrical, oval tubulose, flat tube shape.
3. the flat tooth finned tube of rectangle according to claim 1, is characterized in that:
Wherein, every flat tooth fin of adjacent two described rectangles parallels.
4. the flat tooth finned tube of rectangle according to claim 1, is characterized in that:
Wherein, the apical margin on the top of described flat tooth is any one shape being in trapezoidal, circular arc, zigzag and waveform.
5. the flat tooth finned tube of rectangle according to claim 1, is characterized in that:
Wherein, the sidewall of described flat tooth has any one in rough surface and indenture and groove.
6. the flat tooth finned tube of a rectangle heat-exchanging tube bundle, is characterized in that, comprising:
At least three flat tooth finned tubes of rectangle,
Wherein, the flat tooth finned tube of described rectangle is the claims 1 to the flat tooth finned tube of rectangle described in any one in claim 5.
The flat tooth finned tube of described rectangle heat-exchanging tube bundle is in-line arrangement, is staggered in arrangement, and any one in arranging of unequal-interval.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410290426.5A CN104048545A (en) | 2014-06-25 | 2014-06-25 | Rectangular flat-tooth finned tube and heat exchange tube bundle of rectangular flat-tooth finned tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410290426.5A CN104048545A (en) | 2014-06-25 | 2014-06-25 | Rectangular flat-tooth finned tube and heat exchange tube bundle of rectangular flat-tooth finned tube |
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| Publication Number | Publication Date |
|---|---|
| CN104048545A true CN104048545A (en) | 2014-09-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410290426.5A Pending CN104048545A (en) | 2014-06-25 | 2014-06-25 | Rectangular flat-tooth finned tube and heat exchange tube bundle of rectangular flat-tooth finned tube |
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| Country | Link |
|---|---|
| CN (1) | CN104048545A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107388875A (en) * | 2017-06-27 | 2017-11-24 | 太仓陶氏电气有限公司 | A kind of tubular type radiating fin sliding radiator |
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| GB1305667A (en) * | 1970-05-05 | 1973-02-07 | ||
| US3901312A (en) * | 1974-02-01 | 1975-08-26 | Peerless Of America | Heat exchangers and method of making same |
| CN2548107Y (en) * | 2002-06-08 | 2003-04-30 | 东方锅炉厂无锡热管分厂 | H-type finned tube |
| CN201122070Y (en) * | 2007-10-12 | 2008-09-24 | 汪江 | Radiating fins |
| CN203928842U (en) * | 2014-06-25 | 2014-11-05 | 上海理工大学 | The flat tooth finned tube of rectangle and the flat tooth finned tube of rectangle heat-exchanging tube bundle |
-
2014
- 2014-06-25 CN CN201410290426.5A patent/CN104048545A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1305667A (en) * | 1970-05-05 | 1973-02-07 | ||
| US3901312A (en) * | 1974-02-01 | 1975-08-26 | Peerless Of America | Heat exchangers and method of making same |
| CN2548107Y (en) * | 2002-06-08 | 2003-04-30 | 东方锅炉厂无锡热管分厂 | H-type finned tube |
| CN201122070Y (en) * | 2007-10-12 | 2008-09-24 | 汪江 | Radiating fins |
| CN203928842U (en) * | 2014-06-25 | 2014-11-05 | 上海理工大学 | The flat tooth finned tube of rectangle and the flat tooth finned tube of rectangle heat-exchanging tube bundle |
Non-Patent Citations (1)
| Title |
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| 王厚华: "外掠单排矩形翅片管的强化换热实验研究", 《暖通空》, 30 June 1995 (1995-06-30) * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107388875A (en) * | 2017-06-27 | 2017-11-24 | 太仓陶氏电气有限公司 | A kind of tubular type radiating fin sliding radiator |
| CN107388875B (en) * | 2017-06-27 | 2019-05-07 | 太仓陶氏电气有限公司 | A kind of tubular type radiating fin sliding radiator |
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Application publication date: 20140917 |