CN106403682A - Novel micro-channel flat pipe machined by roll-bending brazing process - Google Patents
Novel micro-channel flat pipe machined by roll-bending brazing process Download PDFInfo
- Publication number
- CN106403682A CN106403682A CN201610791482.6A CN201610791482A CN106403682A CN 106403682 A CN106403682 A CN 106403682A CN 201610791482 A CN201610791482 A CN 201610791482A CN 106403682 A CN106403682 A CN 106403682A
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- CN
- China
- Prior art keywords
- micro
- channel flat
- roll bending
- flat
- soldering processes
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- 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
- F28F1/02—Tubular elements of cross-section which is non-circular
- F28F1/022—Tubular elements of cross-section which is non-circular with multiple channels
-
- 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
- F28F1/40—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only inside the tubular element
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F2260/00—Heat exchangers or heat exchange elements having special size, e.g. microstructures
- F28F2260/02—Heat exchangers or heat exchange elements having special size, e.g. microstructures having microchannels
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- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Geometry (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Bending Of Plates, Rods, And Pipes (AREA)
Abstract
The invention provides a novel micro-channel flat pipe machined by a roll-bending brazing process. The micro-channel flat pipe is formed from a composite plate by means of a plurality of times of bending formation by using the roll-bending brazing process; a plurality of micro-channels extending linearly along the longitudinal direction are arranged in sequence on the micro-channel flat pipe and in the width direction of the micro-channel flat pipe. The composite plate is an aluminum alloy cascaded layer which is a composite structure comprising three layers or more than three layers, wherein the aluminum alloy cascaded layer sequentially comprises a brazing material layer, an anticorrosive layer and a base layer. According to the novel micro-channel flat pipe provided by the invention, the hole type of the micro-channels is improved and is transformed from a Chinese character Ji-shaped hole into a wave-shaped hole; after the hole type is transformed into the wave-shaped hole, a micro-channel flat pipe with 14 to 22 holes can be obtained under the same outline dimension.
Description
Technical field
A kind of the present invention relates to heat exchanger, in particular it relates to micro-channel flat of new roll bending soldering processes processing.
Background technology
Micro-channel flat, as the core parts of heat exchanger, is just being widely used in various automobiles and domestic air conditioner.Mesh
Front most widely used micro-channel flat is extrusion process gained, and extrusion molding micro-channel flat is determined because of its process characteristic,
Its corrosion resistance is poor, die cost is high, production equipment such as extruder high cost.
Through the retrieval to prior art, find that the patent documentation of Application No. CN203190861U discloses a kind of novel work
The micro-channel flat of skill, this micro-channel flat hole shape is " several " font, and reinforcement is big with upper and lower wall contacts area, shapes to pricker
Weldering impact is big, and sealing-off situation easily occurs；On the other hand, " several " font hole limits the increase of the hole count of micro-channel flat, thus shadow
Ring the lifting of heat exchange efficiency and bearing capacity.
Therefore, it is necessary to improve the design of micro-channel flat, Curve guide impeller pass, thus it is outer with upper and lower to reduce reinforcement
The contact area of wall, increases the hole count of flat tube, thus improving heat exchanging efficiency and bearing capacity.
Content of the invention
For defect of the prior art, it is an object of the invention to provide a kind of new roll bending soldering processes processing is micro-
Passage flat tube.
The micro-channel flat of the new roll bending soldering processes processing being provided according to the present invention, described micro-channel flat adopts
Composite plate repeatedly bends shaping through roll bending soldering processes；
Described micro-channel flat is arranged in order multiple edges longitudinally linearly extended microchannel in the direction of the width.
Preferably, described composite plate is the aluminium alloy layer lamination of three layers and more than three layers composite constructions, be followed successively by solder layer,
Anticorrosive coat, basic unit.
Preferably, through the roll bending of multi-pass, described composite plate is gradually configured to micro- logical described composite plate by plane band
Road flat tube.
Preferably, hole count N of described micro-channel flat is 14～22.
Preferably, the reinforcement undulate inside described micro-channel flat, reinforcement is upper with described micro-channel flat
Wall, the inner side cake contact of lower wall, described micro-channel flat two sides are in circular arc.
Preferably, apply brazing flux between the upper wall of described reinforcement and described micro-channel flat, lower wall, so brazed solid
Fixed, and form soldering point；
The soldering circular arc R 1 of soldering point is 0.1mm.
Preferably, the thickness T of described composite plate is 0.15～0.25mm.
The section outline width W of described micro-channel flat is 10～16mm, and height H is 1.2～1.8mm.
Preferably, the roll bending radius R2 of described reinforcement is 1 to 1.5 times of the thickness T of composite plate.
Preferably, the wave hole passage section area of described micro-channel flat is A1, middle two hole passage section areas
For A2；
As section outline width W, height H, after the thickness T of composite plate and hole count N, roll bending radius R2 determination, just can
Determine the roll bending angle, θ 1 of reinforcement, and then hole passage section area A1 is equal with A2.
Preferably, described reinforcement tail end and the angle theta 2 of the internal face of micro-channel flat are 15 to 20 degree.
Compared with prior art, the present invention has following beneficial effect：
1st, the present invention improves to the pass of microchannel, is changed into waveform hole from a few font holes, is improved to ripple in pass
The micro-channel flat of more hole counts behind shape wave hole, can be realized first under identical outer profile size, be 14 to 22；
2nd, due to the increase of hole count in the present invention, can be in the heat exchange efficiency improving flat tube with paper tinsel thickness in the case of constant
And bearing capacity, also it is equivalent to ensure that bearing capacity is constant, then can use the less band paper tinsel of thickness, thus reaching material-saving
Purpose；
3rd, after the present invention adopts waveform pass, the contact with upper and lower outer wall of flat tube reinforcement is on section by linear contact lay
It is changed into a contact, is conducive to reducing the impact to soldering for the form error, thus reaching the purpose ensureing flat tube qualification rate.
Brief description
The detailed description with reference to the following drawings, non-limiting example made by reading, the further feature of the present invention,
Objects and advantages will become more apparent upon：
Fig. 1 is cross-sectional structure and the relative dimensions schematic diagram of the present invention.
Fig. 2 is the partial enlarged drawing in flat tube section and relative dimensions in the present invention.
Fig. 3 is the waveform pass folding micro-channel flat that in the present invention, hole count is 14.
Fig. 4 is the waveform pass folding micro-channel flat that in the present invention, hole count is 16.
Fig. 5 is the waveform pass folding micro-channel flat that in the present invention, hole count is 18.
Fig. 6 is the waveform pass folding micro-channel flat that in the present invention, hole count is 20.
Fig. 7 is the waveform pass folding micro-channel flat that in the present invention, hole count is 22.
The waveform pass that Fig. 8 is 16 for hole count in the present invention folds the roll bending flower pattern schematic diagram of micro-channel flat.
Specific embodiment
With reference to specific embodiment, the present invention is described in detail.Following examples will be helpful to the technology of this area
Personnel further understand the present invention, but the invention is not limited in any way.It should be pointed out that the ordinary skill to this area
For personnel, without departing from the inventive concept of the premise, some deformation can also be made and improve.These broadly fall into the present invention
Protection domain.
In the present embodiment, the micro-channel flat of the new roll bending soldering processes processing that the present invention provides, described micro- logical
Road flat tube repeatedly bends shaping using composite plate through roll bending soldering processes；
Described micro-channel flat is arranged in order multiple edges longitudinally linearly extended microchannel in the direction of the width.
Described composite plate is the aluminium alloy layer lamination of three layers and more than three layers composite constructions, be followed successively by solder layer, anticorrosive coat,
Basic unit.
Described composite plate is gradually configured to micro-channel flat through the roll bending of multi-pass, described composite plate by plane band.
Hole count N of described micro-channel flat is 14～22.
The upper wall of the reinforcement undulate inside described micro-channel flat, reinforcement and described micro-channel flat, lower wall
The contact of inner side cake, described micro-channel flat two sides are in circular arc.
Apply brazing flux between the upper wall of described reinforcement and described micro-channel flat, lower wall, and then brazed fixation, and shape
Become soldering point；
The soldering circular arc R 1 of soldering point is 0.1mm.
The thickness T of described composite plate is 0.15～0.25mm.
The section outline width W of described micro-channel flat is 10～16mm, and height H is 1.2～1.8mm.
The roll bending radius R2 of described reinforcement is 1 to 1.5 times of the thickness T of composite plate.
The wave hole passage section area of described micro-channel flat is A1, and middle two hole passage section areas are A2；
As section outline width W, height H, after the thickness T of composite plate and hole count N, roll bending radius R2 determination, just can
Determine the roll bending angle, θ 1 of reinforcement, and then hole passage section area A1 is equal with A2.
Described reinforcement tail end is 15 to 20 degree with the angle theta 2 of the internal face of micro-channel flat.
Segmentation reinforcement between mesopore of the present invention and hole is undaform, thus reinforcement with upper and lower outer wall in section is
Point contact, contact surface scribbles soldering flux in forming process, thus ensureing that contact surface completes soldering, is divided between adjacent holes with reaching
Cut, improve the purpose of bearing capacity.
After determining outer profile size, according to the specific requirements such as bearing capacity, hole count N required for determining afterwards and plate
Thickness T；Equal with the flow area in A2 hole secondly by guarantee A1, so that it is determined that the roll bending angle, θ 2 of undaform reinforcement and roller
Curved radius R2；Determine angle, θ 1 it is ensured that the end of undaform reinforcement often comes in contact, leaves with flat tube two ends circular arc portion
Gap, on the other hand, is also beneficial to the carrying out of soldering processes；According to above so that it is determined that the basic size of flat tube each several part.
After the basic parameter determining flat tube and basic size, the roller floral diagram of each passage in design flat tube forming process,
As shown in Figure 7；The contact area passing through point glue equipment between certain passage in flat tube reinforcement and upper and lower outer wall applies brazing flux,
Ensure soldering leg radius R1 after soldering.Determine the running roller of each roll forming passage by roller flower-shape.Finally, through each road
The progressively roll forming of secondary roll bending, and combine the painting soldering flux between corresponding passage, after soldering processes, flat tube finally becomes
Shape.The folding micro-channel flat of the new shape pass of present invention design, has that hole count is many, heat exchange efficiency height, bearing capacity are strong, anti-corruption
Erosion ability is strong, beneficial to the advantages of soldering, the practicality in brazing heat exchanger is gathered around and is held out broad prospects.
The pass that the present invention is directed to folding micro-channel flat has carried out Curve guide impeller, and the micro-channel flat after improvement is more conducive to
The carrying out of soldering processes, and can achieve more hole counts, thus improve the production qualification rate of micro-channel flat, and can achieve
More hole counts, thus increasing heat exchange area, improving heat exchange efficiency, are also beneficial to the raising of bearing capacity, still possess resistance to simultaneously
The characteristic of corrosion, the pass that this flat tube folds micro-channel flat to existing a few word passes has carried out Curve guide impeller, can replace existing
Folding micro-channel flat is had to be widely used in pricker welded type heat exchanger.
Above the specific embodiment of the present invention is described.It is to be appreciated that the invention is not limited in above-mentioned
Particular implementation, those skilled in the art can make various modifications or modification within the scope of the claims, this not shadow
Ring the flesh and blood of the present invention.
Claims (10)
1. a kind of micro-channel flat of new roll bending soldering processes processing is it is characterised in that described micro-channel flat is using multiple
Plywood repeatedly bends shaping through roll bending soldering processes；
Described micro-channel flat is arranged in order multiple edges longitudinally linearly extended microchannel in the direction of the width.
2. the micro-channel flat of new roll bending soldering processes processing according to claim 1 is it is characterised in that described multiple
Plywood is the aluminium alloy layer lamination of three layers and more than three layers composite constructions, is followed successively by solder layer, anticorrosive coat, basic unit.
3. the micro-channel flat of new roll bending soldering processes processing according to claim 1 is it is characterised in that described multiple
Plywood is gradually configured to micro-channel flat through the roll bending of multi-pass, described composite plate by plane band.
4. the micro-channel flat of new roll bending soldering processes processing according to claim 1 is it is characterised in that described micro-
Hole count N of passage flat tube is 14～22.
5. the micro-channel flat of new roll bending soldering processes processing according to claim 1 is it is characterised in that described micro-
Reinforcement undulate inside passage flat tube, reinforcement is contacted with the upper wall of described micro-channel flat, the inner side cake of lower wall,
Described micro-channel flat two sides are in circular arc.
6. the micro-channel flat of new roll bending soldering processes processing according to claim 5 is it is characterised in that described add
Apply brazing flux between the upper wall of strong muscle and described micro-channel flat, lower wall, and then brazed fixation, and form soldering point；
The soldering circular arc R 1 of soldering point is 0.1mm.
7. the micro-channel flat of new roll bending soldering processes processing according to claim 1 is it is characterised in that described multiple
The thickness T of plywood is 0.15～0.25mm；
The section outline width W of described micro-channel flat is 10～16mm, and height H is 1.2～1.8mm.
8. the micro-channel flat of new roll bending soldering processes processing according to claim 5 is it is characterised in that described add
The roll bending radius R2 of strong muscle is 1 to 1.5 times of the thickness T of composite plate.
9. the micro-channel flat of new roll bending soldering processes processing according to claim 7 is it is characterised in that described micro-
The wave hole passage section area of passage flat tube is A1, and middle two hole passage section areas are A2；
As section outline width W, height H, after the thickness T of composite plate and hole count N, roll bending radius R2 determination, just can determine
The roll bending angle, θ 1 of reinforcement, and then hole passage section area A1 is equal with A2.
10. the micro-channel flat of new roll bending soldering processes processing according to claim 5 is it is characterised in that described
Reinforcement tail end is 15 to 20 degree with the angle theta 2 of the internal face of micro-channel flat.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610791482.6A CN106403682A (en) | 2016-08-31 | 2016-08-31 | Novel micro-channel flat pipe machined by roll-bending brazing process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610791482.6A CN106403682A (en) | 2016-08-31 | 2016-08-31 | Novel micro-channel flat pipe machined by roll-bending brazing process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106403682A true CN106403682A (en) | 2017-02-15 |
Family
ID=58001951
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610791482.6A Pending CN106403682A (en) | 2016-08-31 | 2016-08-31 | Novel micro-channel flat pipe machined by roll-bending brazing process |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106403682A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107270760A (en) * | 2017-08-03 | 2017-10-20 | 常州凯微管业科技有限公司 | A kind of embedded channel heat exchanger folded tube and its processing method |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202041112U (en) * | 2010-12-30 | 2011-11-16 | 上海德尔福汽车空调系统有限公司 | Folding eight-channel flat pipe with reinforced pipe end strength |
| CN203190861U (en) * | 2013-04-24 | 2013-09-11 | 萨帕铝热传输(上海)有限公司 | Multi-hole folding micro-channel flat pipe for heat dissipation |
| CN103743279A (en) * | 2013-12-31 | 2014-04-23 | 南宁八菱科技股份有限公司 | Wave-shaped multi-channel self-brazing cooling pipe |
-
2016
- 2016-08-31 CN CN201610791482.6A patent/CN106403682A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202041112U (en) * | 2010-12-30 | 2011-11-16 | 上海德尔福汽车空调系统有限公司 | Folding eight-channel flat pipe with reinforced pipe end strength |
| CN203190861U (en) * | 2013-04-24 | 2013-09-11 | 萨帕铝热传输(上海)有限公司 | Multi-hole folding micro-channel flat pipe for heat dissipation |
| CN103743279A (en) * | 2013-12-31 | 2014-04-23 | 南宁八菱科技股份有限公司 | Wave-shaped multi-channel self-brazing cooling pipe |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107270760A (en) * | 2017-08-03 | 2017-10-20 | 常州凯微管业科技有限公司 | A kind of embedded channel heat exchanger folded tube and its processing method |
| CN107270760B (en) * | 2017-08-03 | 2023-09-15 | 常州凯微管业科技有限公司 | Folding tube of embedded channel heat exchanger and processing method thereof |
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| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170215 |