CN103629968B - A kind of stacked integral type inside and outside fin heat exchanger tube and manufacture method thereof - Google Patents
A kind of stacked integral type inside and outside fin heat exchanger tube and manufacture method thereof Download PDFInfo
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- CN103629968B CN103629968B CN201310573311.2A CN201310573311A CN103629968B CN 103629968 B CN103629968 B CN 103629968B CN 201310573311 A CN201310573311 A CN 201310573311A CN 103629968 B CN103629968 B CN 103629968B
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Abstract
Relate to a kind of stacked integral type inside and outside fin heat exchanger tube, there is certain thickness outer fin unit and the stacked bonding of inner fin unit forms by multiple; Outer fin unit comprises the first annulus and extension part, and the end of extension part connects with the outer ring of the first annulus; Inner fin unit comprises the second annulus and interior extension, and the end of interior extension connects with the inner ring of the second annulus; First annulus stacks gradually into the base tube of the heat exchanger of tubulose with the second annulus.Also relate to a kind of manufacture method of stacked integral type inside and outside fin heat exchanger tube, comprise punching press, stacked and sintering step.Heat exchanger tube possesses the advantage of traditional external finned tube and internally finned tube simultaneously, and inside and outside fin and base tube as a whole, fin structure is compact, fin area is large, there is not thermal contact resistance in fin and base tube, greatly enhance steam-condensation and convection heat transfer' heat-transfer by convection performance, can in field application such as the energy, chemical industry, refrigeration, electronic radiations.
Description
Technical field
The present invention relates to enhanced heat exchange technical field, particularly relate to a kind of stacked integral type inside and outside fin heat exchanger tube and manufacture method thereof, can in field application such as the energy, chemical industry, refrigeration, electronic radiations.
Background technology
Fin heat exchange pipe has been widely used in all types of heat-exchange apparatus and firing equipment, and it, mainly through adding fin on the surface of heat exchanger tube, increases the external surface area (or internal surface area) of heat exchanger tube, thus reaches the object improving heat exchange efficiency.In order to improve its heat transfer property, conventional method is the heat transfer area increasing finned tube, the thermal contact resistance strengthened conduit, reduce fin and base tube.
At present, for the finned tube of heat exchanger, structure, be substantially divided into two classes: a class is external finned tube, and this kind of finned tube has pipe with wound fin, plate finned tubes and overall rolled finned tube etc.; Another kind of is internally finned tube, and this kind of finned tube increases fin on heat exchanger tube inwall, such as draws out longitudinal rib at heat exchanger tube inwall, or in heat exchanger tube, load the inner core etc. with external fin.For the processing method of external finned tube, a class is that fin is separated processing with base tube, then utilizes some techniques to make both combine, as cold rolling embedding finned tube, high-frequency welding finned tube etc.; Another kind of be fin and base tube as a whole formula process, as hot rolling finned tube etc.General all being combined by the mode of mechanical expanding or hydraulic expanding tube with radiating fin with holes of internally finned tube is used.There is the difficult problem that fin structure is not compact, fin layout is single and thermal contact resistance is large in separate type finned tube, fin-tube integral type then faces the shortcoming that complex process, processing cost are high, fin increases limited area, these all will be unfavorable for the raising of fin heat exchange pipe heat exchange efficiency, are even difficult to meet instructions for use.In addition, the Integral heat-exchange pipe simultaneously with inside and outside fin has no the report of relative manufacturing process.
Summary of the invention
For the technical problem existed in prior art, the object of the invention is: provide that a kind of technique possesses inside and outside fin structure simply, simultaneously, inside and outside fin is arranged flexibly, significantly improve the stacked integral type inside and outside fin heat exchanger tube of heat exchange property and manufacture method thereof.
In order to achieve the above object, the present invention adopts following technical scheme:
A kind of stacked integral type inside and outside fin heat exchanger tube, has certain thickness outer fin unit and the stacked bonding of inner fin unit forms by multiple; Outer fin unit comprises the first annulus and extension part, and the end of extension part connects with the outer ring of the first annulus; Inner fin unit comprises the second annulus and interior extension, and the end of interior extension connects with the inner ring of the second annulus; First annulus stacks gradually into the base tube of the heat exchanger of tubulose with the second annulus.After adopting this structure, the position of inside and outside fin and quantity is not because can arranging flexibly by existing processing conditions restriction, and the thickness of inside and outside fin unit and quantity can determine the length of heat exchanger tube, and structure is simple, select flexibly.
An outer fin unit comprises first annulus and multiple extension part, and extension part is uniform along the circumference of the first annulus; An inner fin unit comprises second annulus and multiple interior extension, and interior extension is uniform along the circumference of the second annulus.After adopting this structure, increase the quantity of extension part and interior extension as far as possible, thus the overall quantity increasing outer fin and inner fin, namely increase heat transfer area in the circumferential, effectively increase heat transfer efficiency.
The shape of multiple outer fin unit is identical, and the shape of multiple inner fin unit is identical; Separated by an inner fin unit between adjacent two outer fin units, separated by an outer fin unit between adjacent two inner fin unit.After adopting this structure, inside and outside fin unit is spaced, arranges an inner fin unit between two outer fin units, making extension part axially having gap, effectively increasing heat transfer area, strengthen turbulent flow, improve heat transfer efficiency.
First annulus and the second annulus are the annulus that inside and outside footpath size is identical.After adopting this structure, structure is simple, easily manufactured, easy for installation, can form the base tube of circular tube shaped.
Extension part cross sectional shape perpendicular to axial direction is rectangle, trapezoidal or V-arrangement; Interior extension cross sectional shape perpendicular to axial direction is rectangle, trapezoidal or V-arrangement.After adopting this structure, extension part and interior extension can adopt various shape, flexible design.
Base tube distributes outward outer fin and outer conduit, distribution inner fin and interior conduit in base tube; All extension parts form outer fin and outer conduit; All interior extensions form inner fin and interior conduit.After adopting this structure, outer fin and outer conduit, inner fin and interior conduit can be arranged flexibly, can arrange out more rich and varied inside and outside fin shape.
The material of outer fin unit is copper, steel or aluminium, and the material of inner fin unit is copper, steel or aluminium.After adopting this structure, effectively increase heat transfer efficiency.
A manufacture method for stacked integral type inside and outside fin heat exchanger tube, in turn includes the following steps: a. makes multiple outer fin unit and inner fin unit by the mode of punching press; B. by outer fin unit with inner fin elementary layer is nestable is connected on outside the guide pillar of fixture, fin unit and inner fin unit is compressed with fixture from axial direction; C. heat preservation sintering process, bonds in aggregates by outer fin unit and inner fin unit, takes fixture apart, obtain stacked integral type inside and outside fin heat exchanger tube.Adopt in this way, technical process is simple, integral type can make base tube and outer fin, inner fin.
In step c, sintering temperature is 0.7 to 0.8 times of outer fin unit or inner fin unit material melting temperature, and temperature retention time is 30 to 90 minutes.
In step b, outer fin unit and inner fin unit interval are arranged; Near outer fin unit and inner fin unit between circumference to stagger an angle, form the various outer fin shape of heat exchange pipe external surface and the various inner fin shapes of inner surface.
Principle of the present invention is: this heat exchanger tube by outer fin unit and inner fin unit successively stacked sintering form, there is inside and outside fin structure simultaneously, conduit, outer conduit, inner fin, outer fin and base tube in being formed in inside and outside fin unit lamination process.
Generally speaking, tool of the present invention has the following advantages:
1, stacked integral type inside and outside fin heat exchanger tube of the present invention has inside and outside fin structure simultaneously, and is structure as a whole, the inside and outside fin of the thickness distributed along inside and outside even circumferential, size, reconfigurable, and fin and base tube one, do not exist thermal contact resistance.
2, stacked integral type inside and outside fin heat exchanger tube of the present invention has larger specific area than conventional fins pipe, and therefore heat transfer rate is faster, and heat transfer efficiency is higher, can be widely used in the fields such as the energy, chemical industry, refrigeration.
3, manufacture method of the present invention with punching press be sintered to master, break through traditional finned tube production process, and processing cost is low, manufacturing process is simple.
4, inside and outside fin unit utilizes pressing equipment to obtain, and has element thickness and fin shape can change and precisely controlled feature.
5, heat exchanger tube possesses the advantage of traditional external finned tube and internally finned tube simultaneously, and inside and outside fin and base tube as a whole, fin structure is compact, fin area is large, and fin and base tube do not exist thermal contact resistance, greatly enhances steam-condensation and convection heat transfer' heat-transfer by convection performance.
Accompanying drawing explanation
Fig. 1 is the stereogram of stacked integral type inside and outside fin heat exchanger tube.
Fig. 2 is the front view of inner fin unit.
Fig. 3 is the front view of outer fin unit.
Fig. 4 is the schematic diagram of the stacked assembling of inside and outside fin unit.
Fig. 5 is the schematic diagram that Fig. 4 has assembled.
Wherein, 1 is the first annulus, and 2 is extension part, and 3 is the second annulus, and 4 is interior extension, and 5 is fixture, and 6 is guide pillar.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the present invention will be further described in detail.
With reference to Fig. 1-Fig. 5, a kind of manufacture method of stacked integral type inside and outside fin heat exchanger tube, in turn includes the following steps:
A. produce diel according to the design parameter of inside and outside fin unit, utilize pressing equipment obtained inside and outside fin unit on substrate; Outer fin unit comprises the first annulus and extension part, and the end of extension part connects with the outer ring of the first annulus; Inner fin unit comprises the second annulus and interior extension, and the end of interior extension connects with the inner ring of the second annulus; An outer fin unit comprises first annulus and multiple extension part, and extension part is uniform along the circumference of the first annulus; An inner fin unit comprises second annulus and multiple interior extension, and interior extension is uniform along the circumference of the second annulus; The shape of multiple outer fin unit is identical, and the shape of multiple inner fin unit is identical; The annulus that first annulus is identical with sized by the second annulus; The cross sectional shape perpendicular to axial direction of inside and outside extension is rectangle;
B. by the inside and outside fin unit that the prepares guide pillar successively realization circumference location stacked together by fixture, the inside and outside fin unit axial compaction that overlap is placed by clamp locking mechanism is then utilized; Separated by an inner fin unit between adjacent two outer fin units, separated by an outer fin unit between adjacent two inner fin unit; In order to ensure inside and outside fin unit energy coaxial alignment, guide pillar can be cylindric guide pillar, and guide post surface processes the groove of extension in some accommodations;
C. fixture entirety is put into vacuum sintering furnace or atmosphere protection stove, carry out heat preservation sintering, after heat preservation sintering completes, cool to room temperature with the furnace;
D. take apart after having sintered fixture required stacked integral type inside and outside fin heat exchanger tube, base tube distributes outward outer fin and outer conduit, distribution inner fin and interior conduit in base tube; All extension parts form outer fin and outer conduit; All interior extensions form inner fin and interior conduit.
In the present embodiment, the material of inside and outside fin unit is copper, and thickness is 1mm; Inside and outside extension is rectangle perpendicular to the cross sectional shape of axle, extension Partial Height 5mm, width 2mm, interior extension height 2mm, width 1mm; Base tube (i.e. the first annulus and the second annulus) external diameter 20mm, the internal diameter 17mm of prepared heat exchanger tube; Heat exchanger tube overall length 400mm.
First, as shown in Figure 2,3, inside and outside fin unit is obtained by the diel punching press with same cross-sectional parameter, and its formed precision is controlled, and working (machining) efficiency is high.Then, by inside and outside fin unit degreasing, clean up and dry.Next step, inside and outside fin unit is successively layered on the guide pillar of sintering fixture, and pass through the inside and outside fin unit of retaining mechanism axial grip of fixture, notice that inside and outside fin unit can be arranged by certain helical angle, namely the inside and outside conduit of such formation presents corresponding helical angle, be conducive to causing gas or liquid turbulent flow, improve heat transfer property.Then, the fixture entirety assembled is put into vacuum sintering furnace, setting sintering temperature 750 DEG C, sintering time 90min, has sintered and has cooled to room temperature with the furnace.Finally, take fixture apart, stacked integral type inside and outside fin heat exchanger tube.
Except the mode that the present embodiment is mentioned, cross section perpendicular to axial direction, inside and outside extension can adopt other shapes, and as trapezoidal or V-arrangement, and the quantity of inside and outside extension and position also can be chosen arbitrarily; Adopt the arrangement mode of different inside and outside fin units, different inside and outside fin shape can be obtained.These mapping modes are all in protection scope of the present invention.
Above-described embodiment is the present invention's preferably embodiment; but embodiments of the present invention are not restricted to the described embodiments; change, the modification done under other any does not deviate from Spirit Essence of the present invention and principle, substitute, combine, simplify; all should be the substitute mode of equivalence, be included within protection scope of the present invention.
Claims (10)
1. a stacked integral type inside and outside fin heat exchanger tube, is characterized in that: have certain thickness outer fin unit and the stacked bonding of inner fin unit forms by multiple; Outer fin unit comprises the first annulus and extension part, and the end of extension part connects with the outer ring of the first annulus; Inner fin unit comprises the second annulus and interior extension, and the end of interior extension connects with the inner ring of the second annulus; First annulus stacks gradually into the base tube of the heat exchanger of tubulose with the second annulus.
2. according to one according to claim 1 stacked integral type inside and outside fin heat exchanger tube, it is characterized in that: a described outer fin unit comprises first annulus and multiple extension part, and extension part is uniform along the circumference of the first annulus; An inner fin unit comprises second annulus and multiple interior extension, and interior extension is uniform along the circumference of the second annulus.
3. according to one according to claim 1 stacked integral type inside and outside fin heat exchanger tube, it is characterized in that: the shape of described multiple outer fin unit is identical, and the shape of multiple inner fin unit is identical; Separated by an inner fin unit between adjacent two outer fin units, separated by an outer fin unit between adjacent two inner fin unit.
4. according to one according to claim 1 stacked integral type inside and outside fin heat exchanger tube, it is characterized in that: described first annulus and the second annulus are the annulus that inside and outside footpath size is identical.
5. according to one according to claim 1 stacked integral type inside and outside fin heat exchanger tube, it is characterized in that: the cross sectional shape perpendicular to axial direction of described extension part is rectangle, trapezoidal or V-arrangement; The cross sectional shape perpendicular to axial direction of interior extension is rectangle, trapezoidal or V-arrangement.
6. according to one according to claim 1 stacked integral type inside and outside fin heat exchanger tube, it is characterized in that: described base tube distributes outward outer fin and outer conduit, distribution inner fin and interior conduit in base tube; All extension parts form outer fin and outer conduit; All interior extensions form inner fin and interior conduit.
7. according to one according to claim 1 stacked integral type inside and outside fin heat exchanger tube, it is characterized in that: the material of described outer fin unit is copper, steel or aluminium, the material of inner fin unit is copper, steel or aluminium.
8. a manufacture method for stacked integral type inside and outside fin heat exchanger tube, is characterized in that: in turn include the following steps:
A. multiple outer fin unit and inner fin unit is made by the mode of punching press;
B. by outer fin unit with inner fin elementary layer is nestable is connected on outside the guide pillar of fixture, fin unit and inner fin unit is compressed with fixture from axial direction;
C. heat preservation sintering process, bonds in aggregates by outer fin unit and inner fin unit, takes fixture apart, obtain stacked integral type inside and outside fin heat exchanger tube.
9., according to the manufacture method of a kind of stacked integral type inside and outside fin heat exchanger tube according to claim 8, it is characterized in that: in step c, sintering temperature is 0.7 to 0.8 times of outer fin unit or inner fin unit material melting temperature, and temperature retention time is 30 to 90 minutes.
10. according to the manufacture method of a kind of stacked integral type inside and outside fin heat exchanger tube according to claim 8, it is characterized in that: in step b, outer fin unit and inner fin unit interval are arranged; Near outer fin unit and inner fin unit between circumference to stagger an angle, form the various outer fin shape of heat exchange pipe external surface and the various inner fin shapes of inner surface.
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| CN201310573311.2A CN103629968B (en) | 2013-11-15 | 2013-11-15 | A kind of stacked integral type inside and outside fin heat exchanger tube and manufacture method thereof |
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| CN201310573311.2A CN103629968B (en) | 2013-11-15 | 2013-11-15 | A kind of stacked integral type inside and outside fin heat exchanger tube and manufacture method thereof |
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| CN106196704A (en) * | 2016-08-12 | 2016-12-07 | 华南理工大学 | A kind of use ultrasound wave and the Absorption Refrigerator of structure heat pipe multiple strengthening and refrigerating method |
| CN113601125B (en) * | 2021-07-30 | 2022-08-30 | 福建省江南冷却科技有限公司 | Production process of heat exchanger |
| CN114905848B (en) * | 2022-07-14 | 2022-09-27 | 昆明五彩印务有限公司 | Printing packaging box drying equipment |
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| GB1359647A (en) * | 1971-10-12 | 1974-07-10 | Dewandre Co Ltd C | Heat transfer tubes |
| CN100575808C (en) * | 2004-11-26 | 2009-12-30 | 韦巴斯托股份公司 | Be used for the heat exchanger of air heating apparatus and the method for making heat exchanger |
| US20090159254A1 (en) * | 2007-12-19 | 2009-06-25 | Tyco Electronics Corporation | Heat sink assembly and method of fabricating |
| CN102076205A (en) * | 2009-11-19 | 2011-05-25 | 富准精密工业(深圳)有限公司 | A heat radiation apparatus and a manufacturing method for the same |
| CN202403596U (en) * | 2011-12-31 | 2012-08-29 | 仪征市永辉散热管制造有限公司 | Heat radiating tube |
| CN203586908U (en) * | 2013-11-15 | 2014-05-07 | 华南理工大学 | Laminated and integrated inner fin and outer fin heat exchanging tube |
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