CN106440911A - Structure of finned tube - Google Patents
Structure of finned tube Download PDFInfo
- Publication number
- CN106440911A CN106440911A CN201610667244.4A CN201610667244A CN106440911A CN 106440911 A CN106440911 A CN 106440911A CN 201610667244 A CN201610667244 A CN 201610667244A CN 106440911 A CN106440911 A CN 106440911A
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- China
- Prior art keywords
- base tube
- fin
- tube
- structure according
- welding
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F1/00—Tubular elements; Assemblies of tubular elements
- F28F1/10—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses
- F28F1/12—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element
- F28F1/34—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element and extending obliquely
- F28F1/36—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element and extending obliquely the means being helically wound fins or wire spirals
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- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Geometry (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Laser Beam Processing (AREA)
Abstract
The invention discloses a structure of a finned tube (100). The structure comprises a base tube (1) and fins (2) spirally wound around and welded to the base tube (1). The base tube (1) and the fins (2) are connected in a laser welding manner. The base tube (1) and the fins (2) are subjected to laser welding to form solutions (3). Laser beams (E) in laser welding are obliquely shot in along the connected positions of the base tube (1) and the fins (2). The structure of the finned tube has the beneficial effects that the bottoms of the fins and the base tube are in smooth welding, no fold exists, and the welding rate reaches 100%.
Description
Technical field
The application is related to art of heat transfer, specially a kind of structure of finned tube, in finned tube manufacture and design.
Background technology
In prior art：
Finned tube 100 is formed by base tube 1 and fin 2 integration.
Wherein, Chinese excellent MA theses full-text database, engineering science and technology II collects, the 02nd phase in 2008,2008 1
On the moon -2 months 15 on the 16th was published, and was sponsored by Tsing-Hua University, by academic magazine e-magazine, society edits and publishes.
This article proposes, new laser welding theory, forms finned tube 100, wherein, base tube 1 and fin 2 using point
Body formula structure.
But in specific use with processing, in this document, specific operation process is not described and disclosure,
Lead to not the real processing realizing finned tube 100.
In consideration of it, how to design a kind of structure of finned tube, overcoming the defect in the presence of above-mentioned prior art, being this
Skilled person's technical problem urgently to be resolved hurrily.
Content of the invention
The application aims to overcome that technical problem present in prior art, and provides a kind of structure of finned tube.
The purpose of the application to complete by following technical solution, a kind of structure of finned tube, including base tube and
Spiral winding simultaneously welds fin on base tube, and base tube is attached by the way of laser welding with fin, and base tube is swashed with fin
Photocoagulation is formed with solution, and the inclined position that the laser beam E in laser welding is joined along base tube with fin is injected, and makes weld part
The smooth corrugationless in position.
Laser beam E injects along the angle a between base tube and fin；Angle a is in the range of zero degree is to 90 degree.
Base tube adopts seamless metal pipe or welding metal pipe, and material includes carbon steel, rustless steel, titanium or titanium alloy etc..
Fin adopts copper strips, carbon steel band, stainless steel band, titanium or titanium alloy band.
The height H of fin is not more than base tube radius.
The thickness B of fin is in the range of 0.1mm to 0.6mm.
The wall thickness d of base tube is in the range of 0.5mm to 3mm.
Solution is absorbed in the subsurface fusion penetration V of base tube 1 0.2, in the range of mm to 0.5mm.
The application compared with prior art, at least has following obvious advantage and effect：
1st, fin bottom portion and base tube smoothly weld, and welding rate reaches 100%, make welding position smooth corrugationless.
Brief description
Accompanying drawing described herein is used for providing further understanding of the present application, constitutes the part of the application, this Shen
Schematic description and description please is used for explaining the application, does not constitute the improper restriction to the application.In the accompanying drawings：
Fig. 1 is the fin tube structure schematic diagram of the application.
Fig. 2 is the fabrication design schematic diagram of base tube and fin in the application.
Specific embodiment
Purpose, technical scheme and advantage for making the application are clearer, below in conjunction with the application specific embodiment and
Corresponding accompanying drawing is clearly and completely described to technical scheme.Obviously, described embodiment is only the application one
Section Example, rather than whole embodiments.Based on the embodiment in the application, those of ordinary skill in the art are not doing
The every other embodiment being obtained under the premise of going out creative work, broadly falls into the scope of the application protection.
A kind of structure of finned tube 100 described herein, including base tube 1 and spiral winding and be welded on base tube 1
On fin 2, base tube 1 is attached by the way of laser welding with fin 2, and base tube 1 and fin 2 laser welding are formed with molten
Body 3, the inclined position that the laser beam E in laser welding is joined along base tube 1 with fin 2 is injected；At least have fin bottom portion and
Base tube smoothly welds, corrugationless, and welding rate reaches 100%, makes welding position smooth the effect of corrugationless.
In the embodiment of the present application,
Shown in Fig. 1 ~ Fig. 2, a kind of structure of finned tube 100, including base tube 1 and spiral winding and be welded on base tube 1
On fin 2, base tube 1 and fin 2 be attached by the way of laser welding it is characterised in that：Base tube 1 and fin 2 laser
Welding is formed with solution 3, and the inclined position that the laser beam E in laser welding is joined along base tube 1 with fin 2 is injected.
Position in the embodiment of the present application, on the basis of the laser welding of prior art, along between base tube 1 and fin 2
Put and welded, thus forming a solution 3.Both are welded together, using solution 3, the structure forming full weld.
The first embodiment that solution 3 is formed：When the material melting point temperature of fin 2 is more than the material melting point temperature of base tube 1, should
Solution 3 is melted base tube 1 and formed by laser beam E；
Now, fin 2 is absorbed under the surface of base tube 1, laser beam E main directive base tube 1 surface, and then formation connects between the two
The solution 3 of structure.
The second embodiment that solution 3 is formed：When the material melting point temperature of fin 2 is less than the material melting point temperature of base tube 1, should
Solution 3 is melted the bottom of fin 2 and formed by laser beam E,
Now, fin 2 welding is on the surface of base tube 1.
The 3rd embodiment that solution 3 is formed：When the material melting point temperature of fin 2 is equal to the material melting point temperature of base tube 1, should
Solution 3 is melted by laser beam E and is formed between fin 2 bottom and base tube 1 surface, and wherein, strip material melting point is not necessary to be less than base tube
Material melting point, now can also carry out soldering.
Now, mutually melt between the two.
In three of the above mode, inject laser beam E each along both positions of handing-over, above-mentioned,
In the first embodiment that solution 3 is formed, laser beam E is partial to base tube 1 and is irradiated, and preferably melts the surface of base tube 1.
In the second embodiment that solution 3 is formed, the bottom that laser beam E is partial to fin 2 is irradiated, and preferably melts fin
2 bottom.
In the 3rd embodiment that solution 3 is formed, laser beam E irradiates in a balanced way along between base tube 1 and fin 2 bottom, shape
Become mutually to melt in a balanced way.
Wherein, during the first embodiment being formed using solution 3, both syncretizing effects more preferably, and can utilize base tube 1
The fold that surface is bent to form to fin 2 lower limb accommodates, and forms corrugationless.
Citing：Angle a between base tube 1 and fin 2 is 90 degree, then, laser beam E is partial to the surface of base tube 1, along two
45 degree of positions of person's bisector are downward-sloping, when tilting to 30 degree are, can carry out heat along angle of inclination to the surface of base tube 1
Molten.
In the embodiment of the present application,
Laser beam E injects along the angle a between base tube 1 and fin 2, and laser beam E is arranged between base tube 1 and fin 2 and edge
And injected between base tube 1 and fin 2, it is to avoid the edge of base tube 1 and fin 2 is interfered to laser beam E, impact welding effect
Really.
Wherein, between base tube 1 and fin 2 angle a in the range of zero degree is to 90 degree.
Entering line tilt in the range of laser beam E angle a between, and then weld formation solution 3 makes both abundant
Joint.
In the embodiment of the present application,
Base tube 1 adopts inclined hard metal material to make, and inclined hard metal material is rustless steel, titanium.
By the way of laser welding in this, by the regulation to laser beam E energy, can thoroughly change traditional handicraft
In it is impossible to process the finned tube of inclined hard metal material.
In the embodiment of the present application,
Fin 2 adopts copper strips, stainless steel band, Ti Alloy Strip.
In the embodiment of the present application,
The height H of fin 2 is not less than 5mm.
The height that setting fin 2 is in 5mm can sufficiently ensure, fin 2 has higher radiating effect.
In the embodiment of the present application,
The thickness B of fin 2 is in the range of 0.1mm to 0.5mm.
For ensureing the intensity of fin 2, it is to avoid fin 2 occurs bending or work in-process to deform, therefore setting fin 2
Thickness B is in the range of 0.1mm to 0.5mm.
Wherein, the thickness B of fin 2, in 0.3mm, is that one kind commonly uses state, and under this state, the intensity of fin 2 is
Height, and there is general applicability, radiating effect is preferable.
In the embodiment of the present application,
The wall thickness d of base tube 1 is in the range of 0.5mm to 3mm.
There is provided the space accommodating for solution 3, the wall thickness d minimum state of base tube 1 is in 0.5mm.
Wherein, when the diameter of base tube 1 increases or base tube 1 is using in special environment, for example bear pressure larger when, base tube
1 wall thickness d can change in the range of 0.5mm to 3mm.
Wherein, the pressure of the vapor boiling circulation in boiler can when the wall thickness d of base tube 1 is 1mm, be born.This wall thickness d=
In the state of 1mm, there is the higher suitability and range, the base tube 1 of universal use d=1mm size.
In the embodiment of the present application,
Solution 3 is absorbed in the subsurface fusion penetration V of base tube 1 0.2, in the range of mm to 0.5mm.
Fusion penetration V is the depth apart from base tube 1 surface for the bottom of dissolving position.
For fully solution 3 being absorbed under base tube 1 surface, improve the connection between base tube 1 and fin 2 bottom using solution 3
Effect, according to the use state of base tube 1, and the wall thickness of base tube 1, fusion penetration V can be arranged on 0.2, the scope of mm to 0.5mm
Interior.
Wherein, fusion penetration V is the relatively thin state of the wall thickness of base tube 1 for 0.2, mm.
Fusion penetration V is the thicker state of the wall thickness of base tube 1 for 0.5mm.
When the wall thickness of base tube 1 is 0.5mm, setting fusion penetration V is limit state for 0.5mm, and the effect that both merge is preferable.
But the requirement to laser beam E is higher.
Now, laser beam E presses close to base tube 1 for, in the state of 10 degree, being fused.
In the embodiment of the present application,
The radius R of base tube 1 is not more than the height H of fin 2.
Radius R for avoiding base tube 1 is excessive, leads to fin 2 bottom in the bending welding spiraled, leads to fin 2
The fold producing when bottom bends, for corrugationless, and in order to improve Joint Properties between the two, therefore in design base tube
During the height H of 1 radius R and fin 2, it is not more than the height H of fin 2 using the radius R of base tube 1, for the preferable number in test
According to.
On material：Laser welding finned tube achieves rustless steel, and the high finned tube of the material such as titanium inclined hard metal material makes,
It is higher than 5mm that high fin refers generally to fin).
On material, can be with overall welding be carried out using different fin 2 materials and base tube 1 material；Such as copper strips
And stainless steel tube, copper strips and titanium/titanium alloy tube；The thickness of fin 2 can accomplish 0.3mm according to different materials, and base tube thickness can
With thin to 1mm, original material cost welding finned tube can be greatlyd save.
In technique：
The welding that fin bottom portion and base tube smooth, corrugationless, welding rate reaches 100% absolutely.
Its structure is equal to the finned tube of overall rolling, and fin root and base tube have any gap invariably, therefore no hot
Resistance, and fin and base tube will not be led to depart from, directly produce air thermal resistance, so that heat exchange is imitated because of the vibrations during using
It is very common in pipe with wound fin, plate finned tubes that rate declines this point, and the meaning in bracket is to be easy in pipe with wound fin and plate finned tubes because making
So that fin and base tube is departed from the vibration environment of time length and use occasion, produce air thermal resistance.
Image height frequency welding is not needed equally to wash by water in welding process, therefore weld part is not in that water divides in the case of a high temperature
The bubble solving the gas producing and being formed；These alveolate position later stage easy oxygen during the use of high frequency welded fin-tube
Change, be fin and base tube disengaging, produce air thermal resistance, impact service efficiency and life-span.
In molding：
Fin spiral winding is simultaneously welded on base tube, and the limiting altitude that fusion penetration reaches 0.2-0.5mm. fin is generally more than base tube half
Footpath.
The foregoing is only embodiments herein, and, the title that in the application, parts are taken can not also
With, wherein finned tube 100, it is not intended to limit the title in the application.To those skilled in the art, the application can have respectively
Plant change and change.Any modification, equivalent substitution and improvement made within all designs in the application and principle etc., all should wrap
Within the scope of being contained in claims hereof.
Claims (8)
1. a kind of structure of finned tube, including base tube（1）And spiral winding weld base tube（1）On fin（2）, base tube
（1）With fin（2）Be attached by the way of laser welding it is characterised in that：Base tube（1）With fin（2）Laser welding shape
Become to have solution（3）, laser beam in laser welding（E）Along base tube（1）With fin（2）The inclined position of handing-over is injected, and makes weldering
Socket part position smooths corrugationless.
2. structure according to claim 1 it is characterised in that：Laser beam（E）Along base tube（1）With fin（2）Between
Angle（a）Inject；Angle（a）In the range of zero degree is to 90 degree.
3. the structure according to any of the above-described claim it is characterised in that：Base tube（1）Using seamless metal pipe or welding
Metal tube, material includes carbon steel, rustless steel, titanium or titanium alloy.
4. the structure according to any of the above-described claim it is characterised in that：Fin（2）Using copper strips, carbon steel band, rustless steel
Band, titanium or titanium alloy band.
5. the structure according to any of the above-described claim it is characterised in that：Fin（2）Height（H）It is not more than base tube half
Footpath.
6. the structure according to any of the above-described claim it is characterised in that：Fin（2）Thickness（B）In 0.1mm extremely
In the range of 0.6mm.
7. the structure according to any of the above-described claim it is characterised in that：Base tube（1）Wall thickness（d）In 0.5mm to 3mm
In the range of.
8. the structure according to any of the above-described claim it is characterised in that：Solution（3）It is absorbed in base tube（1）Subsurface molten
Deep（V）0.2, in the range of mm to 0.5mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610667244.4A CN106440911A (en) | 2016-08-15 | 2016-08-15 | Structure of finned tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610667244.4A CN106440911A (en) | 2016-08-15 | 2016-08-15 | Structure of finned tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106440911A true CN106440911A (en) | 2017-02-22 |
Family
ID=58181152
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610667244.4A Pending CN106440911A (en) | 2016-08-15 | 2016-08-15 | Structure of finned tube |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106440911A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106885054A (en) * | 2017-03-03 | 2017-06-23 | 苏州创浩新材料科技有限公司 | A kind of titanium copper steel three-layer metal composite fin tubing and its preparation technology |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4102027A (en) * | 1976-05-25 | 1978-07-25 | Carrier Corporation | Spine finned tube |
| CN202145112U (en) * | 2011-07-12 | 2012-02-15 | 焦作市世佳节能换热设备有限公司 | Elliptical finned tube with nickel-based brazing coating |
| CN204007277U (en) * | 2014-08-20 | 2014-12-10 | 美景（北京）环保科技有限公司 | A kind of little spacing finned tube and finned tube exchanger |
| CN104251633A (en) * | 2014-04-18 | 2014-12-31 | 上海理工大学 | Twisted tooth finned tube and finned tube heat exchange tube bundle |
| CN206095021U (en) * | 2016-08-15 | 2017-04-12 | 杭州菲德博管业有限公司 | Finned pipe |
-
2016
- 2016-08-15 CN CN201610667244.4A patent/CN106440911A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4102027A (en) * | 1976-05-25 | 1978-07-25 | Carrier Corporation | Spine finned tube |
| CN202145112U (en) * | 2011-07-12 | 2012-02-15 | 焦作市世佳节能换热设备有限公司 | Elliptical finned tube with nickel-based brazing coating |
| CN104251633A (en) * | 2014-04-18 | 2014-12-31 | 上海理工大学 | Twisted tooth finned tube and finned tube heat exchange tube bundle |
| CN204007277U (en) * | 2014-08-20 | 2014-12-10 | 美景（北京）环保科技有限公司 | A kind of little spacing finned tube and finned tube exchanger |
| CN206095021U (en) * | 2016-08-15 | 2017-04-12 | 杭州菲德博管业有限公司 | Finned pipe |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106885054A (en) * | 2017-03-03 | 2017-06-23 | 苏州创浩新材料科技有限公司 | A kind of titanium copper steel three-layer metal composite fin tubing and its preparation technology |
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|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170222 |
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| RJ01 | Rejection of invention patent application after publication |