CN108168352A - A kind of external spiral curve finned tube and its manufacturing method - Google Patents
A kind of external spiral curve finned tube and its manufacturing method Download PDFInfo
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- CN108168352A CN108168352A CN201711427450.9A CN201711427450A CN108168352A CN 108168352 A CN108168352 A CN 108168352A CN 201711427450 A CN201711427450 A CN 201711427450A CN 108168352 A CN108168352 A CN 108168352A
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- fin
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- curved section
- fin body
- straightway
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 12
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 6
- 229910052802 copper Inorganic materials 0.000 claims abstract description 6
- 239000010949 copper Substances 0.000 claims abstract description 6
- 238000003466 welding Methods 0.000 claims description 26
- 238000000034 method Methods 0.000 claims description 14
- 229910000881 Cu alloy Inorganic materials 0.000 claims description 13
- 238000010438 heat treatment Methods 0.000 claims description 8
- 230000008569 process Effects 0.000 claims description 8
- 238000005516 engineering process Methods 0.000 claims description 7
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 6
- 238000005422 blasting Methods 0.000 claims description 6
- 229910002804 graphite Inorganic materials 0.000 claims description 6
- 239000010439 graphite Substances 0.000 claims description 6
- 239000002131 composite material Substances 0.000 claims description 4
- 238000001514 detection method Methods 0.000 claims description 4
- 230000000704 physical effect Effects 0.000 claims description 4
- 239000002994 raw material Substances 0.000 claims description 4
- 239000003153 chemical reaction reagent Substances 0.000 claims description 3
- 239000003795 chemical substances by application Substances 0.000 claims description 3
- 238000005530 etching Methods 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 238000004140 cleaning Methods 0.000 claims 1
- 238000002604 ultrasonography Methods 0.000 claims 1
- 239000000463 material Substances 0.000 abstract description 2
- 239000007769 metal material Substances 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 239000004575 stone Substances 0.000 description 2
- 238000002525 ultrasonication Methods 0.000 description 2
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000011031 large-scale manufacturing process Methods 0.000 description 1
- 238000005480 shot peening Methods 0.000 description 1
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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
- B23P15/26—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass heat exchangers or the like
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F13/00—Arrangements for modifying heat-transfer, e.g. increasing, decreasing
- F28F13/06—Arrangements for modifying heat-transfer, e.g. increasing, decreasing by affecting the pattern of flow of the heat-exchange media
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F13/00—Arrangements for modifying heat-transfer, e.g. increasing, decreasing
- F28F13/18—Arrangements for modifying heat-transfer, e.g. increasing, decreasing by applying coatings, e.g. radiation-absorbing, radiation-reflecting; by surface treatment, e.g. polishing
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F21/00—Constructions of heat-exchange apparatus characterised by the selection of particular materials
- F28F21/08—Constructions of heat-exchange apparatus characterised by the selection of particular materials of metal
- F28F21/081—Heat exchange elements made from metals or metal alloys
- F28F21/085—Heat exchange elements made from metals or metal alloys from copper or copper alloys
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F2215/00—Fins
- F28F2215/10—Secondary fins, e.g. projections or recesses on main fins
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F2275/00—Fastening; Joining
- F28F2275/06—Fastening; Joining by welding
Abstract
The present invention provides a kind of external spiral curve finned tube and its manufacturing methods, the helical curve finned tube includes tube body and the fin positioned at tube wall, the tube body is made of metal material, the fin uses copper material, the fin includes level-one fin body and two level fin body, the two level fin body is arranged in the level-one fin body, multiple two level fin bodies are set in each level-one fin body, multiple two level fin bodies asymmetric arrangement in the level-one fin body, multiple fins arrange in the shape of a spiral on tube wall on the direction of pipe axis, constituting bar helical fin group, distance values in every helical fin group between adjacent fin are become larger in the direction along pipe axis by small, in equal-difference arrangement.
Description
Technical field
The present invention relates to a kind of heat exchanger tube, particularly a kind of external spiral curve finned tube and its manufacturing method.
Background technology
Finned tube is a kind of heat exchange element.Be in order to improve heat exchange efficiency, usually on the surface of heat exchanger tube by adding fin,
Increase the external surface area (or internal surface area) of heat exchanger tube, so as to achieve the purpose that improve heat exchange efficiency, such a heat exchanger tube.
The type of fin is varied, wherein classifying by fin shape, finned tube can the side of being divided into finned tube (Square
Finned tube), Round fin pipe, spiral fin coil (spiral finned tube), longitudinal fin (Longitudinal
Finned Tube), corrugated fins pipe, spiral saw dentation finned tube (Helical Serrated Finned Tubes), needle
Shape finned tube, whole plate finned tube (plate wing), internally finned tube (inner finned tube) etc..
However, the heat exchange efficiency of the finned tube of numerous fin types comprehensive can not still meet the needs of heat exchange,
And above-mentioned each fin make when all there are it is such or such the problem of, can not meet the needs of simple for process, because
This, there is an urgent need for a kind of finned tube is provided, makes it disclosure satisfy that the requirement of production technology while heat exchange efficiency is improved, solution is freeed
Force of labor, to meet the needs of production.
Invention content
The defects of it is an object of the invention to overcome the prior art propose a kind of heat exchange efficiency significantly improve, flow-disturbing effect it is bright
It is aobvious, and structural strength is high, meets the external spiral curve finned tube of manufacturing technique requirent.
In order to solve the above technical problem, the present invention provides a kind of external spiral curve finned tube, including tube body and position
In multiple fins of tube wall, multiple fins on tube wall along being arranged in the shape of a spiral on tube body axis direction,
A plurality of helical fin group is formed, the fin includes level-one fin body and two level fin body, and two level fin body is arranged on level-one wing
On sheet body, multiple two level fin bodies are set in each level-one fin body.
Preferably, the distance values between fin adjacent in every helical fin group the direction along pipe axis by it is small by
Gradual change is big, in equal-difference arrangement.
Preferably, the multiple two level fin body asymmetric arrangement in the level-one fin body, the level-one fin body
Including straightway and curved section, the straightway is in contact with the tube wall and inclined arrangement, with tube wall it
Between angle be 25-35 ° between, the curved section is connected with the end of the straightway, and the curved section meets following first
Equation：
Wherein, wherein x, y are the coordinate values at any point on the curved section, and the reference axis A of the equation is based on straight
The midpoint of line segment is the center of circle, extends to X-axis to the direction far from tube body along straightway, straightway upper and lower ends are the seat of Y-axis
Parameter, wherein a>0, b>0；
The two level fin is arranged on the curved section of the level-one fin body, and the two level fin meets following second party
Journey：
y1=a1x1 2； (2)
Wherein x1, y1For the coordinate value at any point in the two level fin body, the reference axis B of the equation is with two level fin body
Intersection point with the curved section is origin, is X with the tangent direction of the curved section1Axis more than tangent line is Y1The reference axis of axis, x1
For using two level fin body and curved section junction as origin, tangentially distance of the extending direction apart from the origin, y1It should for distance
The height value of tangent line, a1For coefficient, value range 0.2-0.3.
The present invention also provides a kind of manufacturing methods of external spiral curve finned tube, include the following steps：
S1, selection copper alloy plate are pre-processed as raw material, and to copper alloy plate, and the pretreatment is included to described
Copper alloy plate surface is derusted, and the derusting is completed in a manner that chemical reagent is reacted with the oxide of copper, the pre- place
Reason, which is further included, to be heat-treated and is rolled to the copper alloy plate surface；
S2, the straightway that the level-one fin body is processed in numerically-controlled machine tool, the size of the straightway is preliminary dimension,
The curved section of the level-one fin body is processed in numerically-controlled machine tool, which meets first equation, adds in numerically-controlled machine tool
Two level fin described in work, the two level fin meet the second equation；；
S3, after above-mentioned part machines, with abrasive machine remove feeders, overlap, attachment, piece surface is handled into light
It is sliding；
S4, the detection that physical property, dimensional accuracy, straightness, surface smoothness are carried out to above-mentioned part, if above-mentioned parameter
The requirement of not up to predetermined processing technology, then reject the part；
S5, the straightway that the curved section of the level-one fin body is soldered to the level-one fin body, by the two level wing
Piece is welded on the curved section of the level-one fin body, and specific welding procedure is first processes welding groove, and butt welding on part
Socket part position carries out the pre-heat treatment, and 450 degree of preheating temperature when reaching preheating temperature, is subjected to, immediately in welding process
Heat and keep temperature at 450 degree to welding position using grilled gun, heat treatment operation after being carried out after the completion of welding to part,
Then the weld seam of the part good to welding equipment is handled, and the splashing of face of weld and deburred is clean and spare；
S6, fin part complete welding after, it is first put into electrochemical deoiling agent and carries out oil removal treatment, after the completion with from
Sub- water clean one time it is spare；
S7, by step S6 treated fin part is put into progress shot blasting on surface processing in compressed air shotblasting machine, blow away zero after the completion
The blasting media of part remained on surface；
S8, step S7 treated fin parts are subjected to phosphorating treatment, specially put into etching solution, and carry out
Ultrasonication is taken out spare after the completion；
S9, high heat conduction graphite composite material is sprayed in the surface of step S8 treated fin parts, forms high heat conduction stone
Layer of ink；
S10, by step S9, treated that fin part is put into hothouse that processing is dried；
S11, the fin part for handling completion is installed to finned tube tube body.
Technical scheme of the present invention has following advantageous effect：
1st, using curve fin body, meet curvilinear equation, heat exchange efficiency and heat transfer effect can greatly be improved, it is full
Foot production heat exchange demand；
2nd, curvilinear equation as defined in curve fin body satisfaction, can produce in batches, meet technique productions demand；
3rd, curve fin body includes level-one fin body and two level fin body, can be for any medium of fin surface
Its flow-disturbing effect can be improved, enhances heat exchange efficiency；
4th, curve fin body arranges in the shape of a spiral in the outer wall of heat exchanger tube, its arrangement side while flow-disturbing of its fin itself
Formula also improves flow-disturbing, its heat exchange efficiency of raising as high as possible；
5th, copper alloy plate is chosen as raw material, and the pretreatment behaviour for being derusted, being heat-treated and being rolled to copper alloy plate
Make, improve the mechanical performance of fin；
6th, part is processed in numerically-controlled machine tool, can ensure that fin part meets scheduled equation and size, and is convenient for
Large-scale production；
7th, after part machines substantially, multiple parameters physical property, dimensional accuracy, straightness, table are carried out to it
The detection of face finish ensures that fin part can reach the requirement of predetermined processing technology；
8th, when being subjected to fin, the pre-heat treatment is first carried out to welding position, and continue in the welding process
Heating, the improvement of this technique ensure that the coupling stiffness of welding position；
9th, the surface strength of fin is substantially increased to fin progress oil removing, shot-peening, parkerized technological operation, is extended
Its service life；
10th, high heat conduction graphite composite material is sprayed to the surface of fin part, forms high heat conduction graphite linings, improve heat exchange
Efficiency is calculated through experiment, about improves the heat transfer coefficient 20 or so about percent of finned tube.
Description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, to embodiment or will show below
There is attached drawing needed in technology description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention, for those of ordinary skill in the art, without creative efforts, can be with
Other attached drawings are obtained according to these attached drawings.
Fig. 1 is the structure diagram of the external curve finned tube of the present invention；
Fig. 2 is the schematic diagram of the external curve finned tube reference axis A of the present invention；
Fig. 3 is the schematic diagram of the external curve finned tube reference axis B of the present invention.
Specific embodiment
To make the object, technical solutions and advantages of the present invention clearer, technical scheme of the present invention will be carried out below
Detailed description.Obviously, described embodiment is only part of the embodiment of the present invention, instead of all the embodiments.Base
Embodiment in the present invention, those of ordinary skill in the art are obtained all under the premise of creative work is not made
Other embodiment belongs to the range that the present invention is protected.
As shown in Figs. 1-3, a kind of external curve finned tube, the fin 2 including tube body 1 and positioned at tube wall are described
Tube body 1 is made of metal material, and the fin 2 uses copper material, and the fin 2 includes level-one fin body 3 and two level fin
Body 4, the two level fin body 4 are arranged in the level-one fin body 3, and multiple two level wings are set in each level-one fin body 3
Sheet body 4, multiple 4 bodies of two level fin asymmetric arrangement in the level-one fin body 3, multiple fins 2 are on 1 outer wall of tube body
It is arranged in the shape of a spiral on the direction of pipe axis, constituting bar helical fin group, adjacent fin in every helical fin group
Between distance values become larger in the direction along pipe axis by small, in equal-difference arrangement；
The level-one fin body 3 includes straightway 5 and curved section 6, and the straightway 5 is in contact with 1 outer wall of tube body
And between the angle between inclined arrangement, with 1 outer wall of tube body is 25-35 °, the end of the curved section 6 and the straightway 5
End is connected, and the curved section 6 meets below equation：
Wherein, wherein x, y are the coordinate values at any point on the curved section 6, and the reference axis A of the equation is based on straight
The midpoint of line segment 5 is the center of circle, which is divided equally into straightway at two sections equal of midpoint, along straightway 5 to far from pipe
The direction of body extends to X-axis, reference axis of the straightway upper and lower ends for Y-axis, wherein a>0, b>0；
The two level fin body 4 is arranged on the curved section 6 of the level-one fin body 3, the two level fin body 4 meet with
Lower equation：
y1=a1x1 2； (2)
Wherein x1, y1For the coordinate value at any point in the two level fin body 4, the reference axis B of the equation is with two level fin body
4 with the intersection point of the curved section 6 be origin, is X with the tangent direction of the curved section 61Axis more than tangent line is Y1The reference axis of axis,
x1For using two level fin body 4 and 6 junction of curved section as origin, tangentially distance of the extending direction apart from the origin, y1For distance
The height value of the tangent line, a1For coefficient, value range 0.2-0.3.
Setting is there are two two level fin body 4 in the level-one fin body 3, adjacent rings wing in the multiple annulus fins set
Spacing between piece group etc. differences be 0.3cm, a plurality of helical fin group includes 2-3 helical fin.
The present invention also provides a kind of manufacturing methods of external spiral curve finned tube, include the following steps：
S1, selection copper alloy plate are pre-processed as raw material, and to copper alloy plate, and the pretreatment is included to described
Copper alloy plate surface is derusted, and the derusting is completed in a manner that chemical reagent is reacted with the oxide of copper, the pre- place
Reason, which is further included, to be heat-treated and is rolled to the copper alloy plate surface；
S2, the straightway that the level-one fin body is processed in numerically-controlled machine tool, the size of the straightway is preliminary dimension,
The curved section of the level-one fin body is processed in numerically-controlled machine tool, which meets first equation, adds in numerically-controlled machine tool
Two level fin described in work, the two level fin meet the second equation；；
S3, after above-mentioned part machines, with abrasive machine remove feeders, overlap, attachment, piece surface is handled into light
It is sliding；
S4, the detection that physical property, dimensional accuracy, straightness, surface smoothness are carried out to above-mentioned part, if above-mentioned parameter
The requirement of not up to predetermined processing technology, then reject the part；
S5, the straightway that the curved section of the level-one fin body is soldered to the level-one fin body, by the two level wing
Piece is welded on the curved section of the level-one fin body, and specific welding procedure is first processes welding groove, and butt welding on part
Socket part position carries out the pre-heat treatment, and 450 degree of preheating temperature when reaching preheating temperature, is subjected to, immediately in welding process
Heat and keep temperature at 450 degree to welding position using grilled gun, heat treatment operation after being carried out after the completion of welding to part,
Then the weld seam of the part good to welding equipment is handled, and the splashing of face of weld and deburred is clean and spare；
S6, fin part complete welding after, it is first put into electrochemical deoiling agent and carries out oil removal treatment, after the completion with from
Sub- water clean one time it is spare；
S7, by step S6 treated fin part is put into progress shot blasting on surface processing in compressed air shotblasting machine, blow away zero after the completion
The blasting media of part remained on surface；
S8, step S7 treated fin parts are subjected to phosphorating treatment, specially put into etching solution, and carry out
Ultrasonication is taken out spare after the completion；
S9, high heat conduction graphite composite material is sprayed in the surface of step S8 treated fin parts, forms high heat conduction stone
Layer of ink；
S10, by step S9, treated that fin part is put into hothouse that processing is dried；
S11, the fin part for handling completion is installed to finned tube tube body.
The above description is merely a specific embodiment, but protection scope of the present invention is not limited thereto, any
Those familiar with the art in the technical scope disclosed by the present invention, can readily occur in change or replacement, should all contain
Lid is within protection scope of the present invention.Therefore, protection scope of the present invention should be based on the protection scope of the described claims.
Claims (4)
1. a kind of external spiral curve finned tube, multiple fins including tube body and positioned at tube wall, which is characterized in that more
A fin, along being arranged in the shape of a spiral on tube body axis direction, forms a plurality of helical fin group on tube wall, described
Fin includes level-one fin body and two level fin body, and two level fin body is arranged in level-one fin body, in each level-one fin body
Multiple two level fin bodies are set.
2. a kind of external spiral curve finned tube according to claim 1, which is characterized in that adjacent in every helical fin group
Fin between distance values become larger in the direction along pipe axis by small, in equal-difference arrangement.
3. a kind of external spiral curve finned tube according to claim 2, which is characterized in that the multiple two level fin body exists
Asymmetric arrangement in the level-one fin body, the level-one fin body include straightway and curved section, the straightway with it is described
Tube wall is in contact and inclined arrangement, between the angle between tube wall is 25-35 °, the curved section and institute
The end for stating straightway is connected, and the curved section meets following first equation：
Wherein, wherein x, y are the coordinate values at any point on the curved section, and the reference axis A of the equation is based on straightway
Midpoint for the center of circle, extend to X-axis to the direction far from tube body along straightway, straightway upper and lower ends are the reference axis of Y-axis,
Wherein a>0, b>0；
The two level fin is arranged on the curved section of the level-one fin body, and the two level fin meets following second equation：
y1=a1x1 2； (2)
Wherein x1, y1For the coordinate value at any point in the two level fin body, the reference axis B of the equation is with two level fin body and institute
The intersection point for stating curved section is origin, is X with the tangent direction of the curved section1Axis more than tangent line is Y1The reference axis of axis, x1For with
Two level fin body is origin with curved section junction, tangentially distance of the extending direction apart from the origin, y1For apart from the tangent line
Height value, a1For coefficient, value range 0.2-0.3.
4. the manufacturing method of a kind of external spiral curve finned tube according to claim 3, which is characterized in that including walking as follows
Suddenly：
S1, selection copper alloy plate are pre-processed as raw material, and to copper alloy plate, and the pretreatment includes closing the copper
Golden plate surface is derusted, and the derusting is completed in a manner that chemical reagent is reacted with the oxide of copper, and the pretreatment is also
Including the copper alloy plate surface is heat-treated and is rolled；
S2, the straightway that the level-one fin body is processed in numerically-controlled machine tool, the size of the straightway is preliminary dimension, in numerical control
The curved section of the level-one fin body is processed in lathe, which meets first equation, institute is processed in numerically-controlled machine tool
Two level fin is stated, the two level fin meets the second equation；；
S3, after above-mentioned part machines, with abrasive machine remove feeders, overlap, attachment, piece surface is handled smooth；
S4, the detection that physical property, dimensional accuracy, straightness, surface smoothness are carried out to above-mentioned part, if above-mentioned parameter does not reach
To the requirement of predetermined processing technology, then the part is rejected；
S5, the straightway that the curved section of the level-one fin body is soldered to the level-one fin body weld the two level fin
It is connected on the curved section of the level-one fin body, specific welding procedure is first processes welding groove, and to weld part on part
Position carries out the pre-heat treatment, and 450 degree of preheating temperature when reaching preheating temperature, is subjected to, is used in welding process immediately
Grilled gun to welding position heat and keep temperature at 450 degree, heat treatment operation after being carried out after the completion of welding to part, then
The weld seam of the part good to welding equipment is handled, and the splashing of face of weld and deburred is clean and spare；
After S6, fin part complete welding, it is first put into electrochemical deoiling agent and carries out oil removal treatment, uses ionized water after the completion
Cleaning one time it is spare；
S7, by step S6 treated fin part is put into progress shot blasting on surface processing in compressed air shotblasting machine, blow away parts list after the completion
The remaining blasting media in face；
S8, step S7 treated fin parts are subjected to phosphorating treatment, specially put into etching solution, and carry out ultrasound
Wave processing, takes out spare after the completion；
S9, high heat conduction graphite composite material is sprayed in the surface of step S8 treated fin parts, forms high heat conduction graphite linings；
S10, by step S9, treated that fin part is put into hothouse that processing is dried；
S11, the fin part for handling completion is installed to finned tube tube body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711427450.9A CN108168352B (en) | 2017-12-26 | 2017-12-26 | A kind of external spiral curve finned tube and its manufacturing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711427450.9A CN108168352B (en) | 2017-12-26 | 2017-12-26 | A kind of external spiral curve finned tube and its manufacturing method |
Publications (2)
| Publication Number | Publication Date |
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| CN108168352A true CN108168352A (en) | 2018-06-15 |
| CN108168352B CN108168352B (en) | 2019-05-07 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110595249A (en) * | 2019-09-30 | 2019-12-20 | 广东万和热能科技有限公司 | Multi-stage crotch type fin and heat exchanger |
| CN110608630A (en) * | 2019-09-30 | 2019-12-24 | 广东万和热能科技有限公司 | Two-stage crotch type fin and heat exchanger |
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| US20130299145A1 (en) * | 2012-04-19 | 2013-11-14 | National University Of Singapore | Heat sink system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110595249A (en) * | 2019-09-30 | 2019-12-20 | 广东万和热能科技有限公司 | Multi-stage crotch type fin and heat exchanger |
| CN110608630A (en) * | 2019-09-30 | 2019-12-24 | 广东万和热能科技有限公司 | Two-stage crotch type fin and heat exchanger |
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