CN105066759A - Light and efficient aluminum return pipe and production method thereof - Google Patents
Light and efficient aluminum return pipe and production method thereof Download PDFInfo
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- CN105066759A CN105066759A CN201510420194.5A CN201510420194A CN105066759A CN 105066759 A CN105066759 A CN 105066759A CN 201510420194 A CN201510420194 A CN 201510420194A CN 105066759 A CN105066759 A CN 105066759A
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- interior pipe
- outer tube
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- return duct
- light weight
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Abstract
The invention discloses a light and efficient aluminum return pipe and a production method thereof. The return pipe comprises an inner pipe body and an outer pipe body. At least one spiral microchannel is formed between the inner pipe body and the outer pipe body. The aluminum return pipe can be obtained through the production method, the inner pipe body enters and comes out of the outer pipe body in a sleeved mode, the inner pipe body and the outer pipe body are connected through brazing, and thus the dimension parameter of the inner pipe body, the dimension parameter of the outer pipe body and the dimension parameters of the microchannels are not affected. The heat transferring effect between the pipe bodies is better, convection of heat transfer media is enhanced, and accordingly plug flow is avoided, and the heat transfer efficiency of the heat transfer media is improved.
Description
Technical field
The invention belongs to aluminum pipe production technical field, particularly relate on heating-cooling equipment for the return duct of heat exchange, suction line, pipette and air intake duct.
Background technology
Due to good heat conductive performance, copper is always as heat converter structure material.Along with material technology progress, in heat exchanger, aluminium is day by day ripe for copper technology.Compared with copper, aluminium rich reserves, price is 1/4 of copper valency, and density is 1/3 of copper, and same constructed of aluminium saves cost more than 50% than steel structure.Obvious economic worth is there is in aluminium for copper.Return duct/suction line/pipette/the air intake duct (SuctionPipe) of the heat-exchange apparatus such as original refrigerator generally enters pipe and goes out pipe and be made up of two groups of different pipelines, and refrigerant is comparatively large in the temperature difference of pipe of coming in and going out, and causes heat-exchange apparatus energy consumption higher.
Summary of the invention
Goal of the invention: for above-mentioned existing Problems existing and deficiency, the object of this invention is to provide a kind of efficient and light weight aluminium return duct and production method thereof, has had more outstanding heat transfer efficiency, improve energy consumption.
Technical scheme: for achieving the above object, the present invention by the following technical solutions: a kind of efficient and light weight aluminium return duct, comprises inner and outer tubes, is provided with at least one spiral microchannel between described inner and outer tubes.
As preferably, the cross section of described microchannel is that butt is fan-shaped.
As preferably, the diameter of described interior pipe is 1.5 ~ 200mm, and wall thickness is 0.5 ~ 50mm.
As preferably, the diameter of described outer tube is 1.6 ~ 250mm, and wall thickness is 0.5 ~ 50mm.
As preferably, described spiral microchannel is 0 ~ 70 ° relative to the angle of pipe centerline
As preferably, 15 ~ 90, the number of share of stock position of described microchannel.
Present invention also offers a kind of production method of above-mentioned efficient and light weight aluminium return duct, comprise the following steps:
(1) first, select seamless aluminium tubing material or ratio-frequency welding adapter as interior pipe, and in the outer surface compound of interior pipe composite brazing layer;
(2) then using riffled tube as outer tube, and be enclosed within the outer wall of interior pipe;
(3) then inner lining mould is inserted in interior pipe, make inner lining mould and interior pipe be interference fit;
(4) inner and outer tubes assembled are placed in soldering oven, make the outer wall of the internal thread of outer tube and interior pipe integrally welded, thus form spiral microchannel.
As preferably, the thickness of described composite brazing layer be inner tubal wall thick 2 ~ 20%.
Present invention also offers a kind of production method of above-mentioned efficient and light weight aluminium return duct, comprise the following steps:
(1) first, take over as outer tube with seamless aluminium tubing or ratio-frequency welding, and the inwall of outer tube plates composite brazing layer; Using male-pipe as interior pipe;
(2) then, interior pipe is embedded in outer tube, and inner lining mould is inserted in an interference fit in interior pipe;
(3) then, be placed in soldering oven and carry out soldering, make the inwall of the external screw thread of interior pipe and outer tube integrally welded, thus form spiral microchannel, in brazing process, inner lining mould is cold drawing.
Present invention also offers a kind of production method of above-mentioned efficient and light weight aluminium return duct, comprise the following steps:
(1) first, thread aluminum pipe is interior pipe in addition, takes over as outer tube with the seamless aluminium tubing of smooth inner wall or ratio-frequency welding; Or take internal thread aluminium pipe as outer tube, take over as interior pipe with the seamless aluminium tubing of smooth inner wall or ratio-frequency welding;
(2) then, by interior pipe in an interference fit intercalation enter in outer tube, inner and outer tubes are combined closely and form spiral microchannel.
Beneficial effect: compared with prior art, can obtain aluminium matter return duct by the present invention, inlet pipe with go out pipe and adopt barrel forms, and use Welding to connect, the dimensional parameters of interior Puncture Tube and microchannel can not be affected.Between tubing, heat transfer effect is better, strengthens the convection current of heat transferring medium, thus avoids the formation of laminar flow, improve heat transferring medium heat transfer efficiency.
figure of description
Fig. 1 is the structural representation of efficient and light weight aluminium return duct of the present invention.
Wherein, interior pipe 1, outer tube 2, microchannel 3.
Detailed description of the invention
Below with specific embodiment, illustrate the present invention further.Should understand these embodiments to be only not used in for illustration of the present invention and to limit the scope of the invention, after having read the present invention, the amendment of those skilled in the art to the various equivalent form of value of the present invention has all fallen within the application's claims limited range.
A kind of lightweight aluminium return duct of the present invention, its structure description is two-layer pipe, and endothecium structure is light pipe, and layer structure is microchannel.Enter from compressor, the refrigerant gone out is respectively from novel tube, and external structure flows, thus makes the refrigerant of different temperatures carry out exchange heat in the ectonexine of novel tube.He mainly comprises and being made up of inner and outer tubes 2 sections of tubing, and interior pipe is inserted in outer tube, and uses soldering oven that inner and outer pipes is combined.Described interior tubing matter is aluminium alloy pipe, and its tubing can be seamless pipe or the welded pipe of high frequency aluminium strip, and diameter range is 1.5 to 200mm, and wall thickness is 0.5 to 50mm, and clad aluminum brazing layer is at outer wall, and thickness is 3% to 20% of wall thickness; And outer tube material is aluminium alloy, external diametrical extent is 1.6 to 250mm, and wall thickness is 0.5 to 50mm, internal thread tooth depth is 0.03 to 45mm, and odontoid can be triangle or trapezoidal, and the number of teeth is 15 to 90 teeth (the microchannel numbers of formation), thread becomes 0 to 70 degree spirality, preferably 12 degree.This kind of novel tube has following two kinds of method manufactures:
The first manufacture method: interior pipe is seamless aluminium tubing material or ratio-frequency welding adapter (inwall light pipe or internal thread), and its surface is coated with composite brazing layer; Outer tube is riffled tube.Interior pipe is inserted in outer tube, and utilize inner lining mould insert in form interference fit in pipe, guarantee that the internal thread of outer tube and the outer wall of interior pipe fit tightly, then enter soldering oven and carry out soldering at 460 DEG C, the internal thread tooth of outer tube is welded with the outer wall of interior pipe, forms outer microtube channel design.Meanwhile, cold drawing inner lining mould makes inner lining mould stop 2 ~ 3min in interior pipe, guarantees that welding is complete further.
The second manufacture method: interior pipe is that outer wall has thread, and inwall can be light pipe and can be internal thread; Outer tube is seamless aluminium tubing or ratio-frequency welding adapter, and its inwall has composite brazing layer.Interior pipe is inserted in outer tube, then enters soldering oven and carries out soldering, and the external screw thread of interior pipe has been welded with the inwall of outer tube, forms outer microtube channel design.
As preferably, no matter internal thread or external screw thread, odontoid can be triangle or butt is fan-shaped.
Same, thread aluminum pipe is interior pipe in addition, takes over as outer tube with the seamless aluminium tubing of smooth inner wall or ratio-frequency welding; Or take internal thread aluminium pipe as outer tube, take over as interior pipe with the seamless aluminium tubing of smooth inner wall or ratio-frequency welding.Then combine closely being formed in interior pipe embedding outer tube with interference fit, thus form the MCA in intermediate layer.
Claims (10)
1. an efficient and light weight aluminium return duct, is characterized in that: comprise inner and outer tubes, is provided with at least one spiral microchannel between described inner and outer tubes.
2. efficient and light weight aluminium return duct according to claim 1, is characterized in that: the cross section of described microchannel is that butt is fan-shaped.
3. efficient and light weight aluminium return duct according to claim 1, its grace is just: the diameter of described interior pipe is 1.5 ~ 200mm, and wall thickness is 0.5 ~ 50mm.
4. efficient and light weight aluminium return duct according to claim 1, is characterized in that: the diameter of described outer tube is 1.6 ~ 250mm, and wall thickness is 0.5 ~ 50mm.
5. efficient and light weight aluminium return duct according to claim 1, is characterized in that: described spiral microchannel is 0 ~ 70 ° relative to the angle of pipe centerline.
6. efficient and light weight aluminium return duct according to claim 1, is characterized in that: 15 ~ 90, the number of share of stock position of described microchannel.
7. a production method for the arbitrary described efficient and light weight aluminium return duct of claim 1 ~ 6, is characterized in that comprising the following steps:
(1) first, select seamless aluminium tubing material or ratio-frequency welding adapter as interior pipe, and in the outer surface compound of interior pipe on composite brazing layer;
(2) then using riffled tube as outer tube, and be enclosed within the outer wall of interior pipe;
(3) then inner lining mould is inserted in interior pipe, make inner lining mould and interior pipe be interference fit;
(4) inner and outer tubes assembled are placed in soldering oven, make the outer wall of the internal thread of outer tube and interior pipe integrally welded, thus form spiral microchannel.
8. the production method of efficient and light weight aluminium return duct according to claim 7, is characterized in that: the thickness of described composite brazing layer be inner tubal wall thick 2 ~ 20%.
9. a production method for the arbitrary described efficient and light weight aluminium return duct of claim 1 ~ 6, is characterized in that comprising the following steps:
(1) first, take over as outer tube with seamless aluminium tubing or ratio-frequency welding, and the inwall of outer tube plates composite brazing layer; Using male-pipe as interior pipe;
(2) then, interior pipe is inserted in outer tube, and inner lining mould is inserted in an interference fit in interior pipe;
(3) then, be placed in soldering oven and carry out soldering, make the inwall of the external screw thread of interior pipe and outer tube integrally welded, thus form spiral microchannel.
10. a production method for the arbitrary described efficient and light weight aluminium return duct of claim 1 ~ 6, is characterized in that comprising the following steps:
(1) first, thread aluminum pipe is interior pipe in addition, takes over as outer tube with the seamless aluminium tubing of smooth inner wall or ratio-frequency welding; Or take internal thread aluminium pipe as outer tube, take over as interior pipe with the seamless aluminium tubing of smooth inner wall or ratio-frequency welding;
(2) then, by interior pipe in an interference fit intercalation enter in outer tube, inner and outer tubes are combined closely and form spiral microchannel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510420194.5A CN105066759A (en) | 2015-07-16 | 2015-07-16 | Light and efficient aluminum return pipe and production method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510420194.5A CN105066759A (en) | 2015-07-16 | 2015-07-16 | Light and efficient aluminum return pipe and production method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105066759A true CN105066759A (en) | 2015-11-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510420194.5A Pending CN105066759A (en) | 2015-07-16 | 2015-07-16 | Light and efficient aluminum return pipe and production method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109277062A (en) * | 2018-10-16 | 2019-01-29 | 绍兴东湖高科股份有限公司 | Microchannel reaction unit and the method for preparing choline chloride using microchannel |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1062087A (en) * | 1996-08-20 | 1998-03-06 | Daikin Ind Ltd | Shell and tube type heat exchanger |
| CN2363153Y (en) * | 1998-11-17 | 2000-02-09 | 朱炳根 | Spiral coiled pipe or circular pipe with fins |
| CN201233194Y (en) * | 2008-01-18 | 2009-05-06 | 刘建安 | Double-layer metal composite fin tube |
| CN102278905A (en) * | 2011-09-15 | 2011-12-14 | 金龙精密铜管集团股份有限公司 | Tube for heat exchanger |
| TW201423022A (en) * | 2012-12-05 | 2014-06-16 | Everest Co Ltd | An improved pipe for refrigerants |
-
2015
- 2015-07-16 CN CN201510420194.5A patent/CN105066759A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1062087A (en) * | 1996-08-20 | 1998-03-06 | Daikin Ind Ltd | Shell and tube type heat exchanger |
| CN2363153Y (en) * | 1998-11-17 | 2000-02-09 | 朱炳根 | Spiral coiled pipe or circular pipe with fins |
| CN201233194Y (en) * | 2008-01-18 | 2009-05-06 | 刘建安 | Double-layer metal composite fin tube |
| CN102278905A (en) * | 2011-09-15 | 2011-12-14 | 金龙精密铜管集团股份有限公司 | Tube for heat exchanger |
| TW201423022A (en) * | 2012-12-05 | 2014-06-16 | Everest Co Ltd | An improved pipe for refrigerants |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109277062A (en) * | 2018-10-16 | 2019-01-29 | 绍兴东湖高科股份有限公司 | Microchannel reaction unit and the method for preparing choline chloride using microchannel |
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Application publication date: 20151118 |