CN108856944B - Solar heat absorption fin wrapped with copper pipe and welding method thereof - Google Patents
Solar heat absorption fin wrapped with copper pipe and welding method thereof Download PDFInfo
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- CN108856944B CN108856944B CN201811033381.8A CN201811033381A CN108856944B CN 108856944 B CN108856944 B CN 108856944B CN 201811033381 A CN201811033381 A CN 201811033381A CN 108856944 B CN108856944 B CN 108856944B
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- fin
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- flow tube
- copper flow
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K1/00—Soldering, e.g. brazing, or unsoldering
- B23K1/06—Soldering, e.g. brazing, or unsoldering making use of vibrations, e.g. supersonic vibrations
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K1/00—Soldering, e.g. brazing, or unsoldering
- B23K1/0008—Soldering, e.g. brazing, or unsoldering specially adapted for particular articles or work
- B23K1/0012—Brazing heat exchangers
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Pressure Welding/Diffusion-Bonding (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The utility model provides a parcel copper pipe's solar energy heat absorption fin, includes aluminium system fin, copper flow tube, aluminium system package piece, aluminium system fin one side surface has plated blue base film, the welding of aluminium system package piece both sides portion is not plated blue base film one side axis department along aluminium system fin, copper flow tube is located aluminium system fin and aluminium system package piece middle part, aluminium system fin both sides are sinusoidal linear cambered surface structure, a plurality of U-shaped return bends have been welded respectively to copper flow tube both sides equidistance. According to the invention, the surface of the copper flow tube is not required to be polished in the welding process, the copper flow tube is prevented from being damaged, the effect of protecting the copper flow tube is achieved, the welding instability phenomenon caused by different expansion coefficients of different materials is avoided, no welding seam is generated on the surface of the fin, the fin and an oxide layer of the copper flow tube are not damaged, the fin is prevented from being corroded, the welded fin is fully wrapped by the copper tube in 360 degrees, the heat conduction contact surface is increased by more than 90%, and the heat conduction effect is increased.
Description
Technical Field
The invention relates to the technical field of solar renewable energy utilization, in particular to a copper pipe-wrapped solar heat absorption fin and a welding method thereof.
Background
The traditional solar heat absorption plate core heat absorption fin and the runner pipe adopt a front welding method, the runner pipe is directly welded with an aluminum fin, the runner pipe is a copper pipe, the fin is an aluminum product, the expansion coefficients of two metals are different, the fin is easy to expand with heat and contract with cold after welding and break, a white welding seam can be formed on the surface of the aluminum fin in the welding process, the heat absorption performance of the aluminum fin is influenced, oxide layers on the surfaces of the fin and a copper pipe are damaged, corrosion is easy to cause, the contact surface of the welded fin and the copper pipe is not more than 10% of the side surface of the copper pipe, the copper pipe is required to be polished when the connection welding of the copper pipe and the fin is increased, the polished copper pipe is poor in pressure bearing performance, and water.
Disclosure of Invention
The invention aims to solve the problems that when a front welding method is adopted for the solar heat absorption fin wrapping the copper pipe, the solar heat absorption fin is not firm, a welding seam is left, a surface oxide layer is easy to damage, corrosion is caused, and the pressure resistance of the welded copper pipe is poor, and the solar heat absorption fin wrapping the copper pipe and the welding method thereof are provided.
The utility model provides a parcel copper pipe's solar energy heat absorption fin, includes aluminium system fin, copper flow tube, aluminium system package piece, aluminium system fin one side surface has plated blue base film, the welding of aluminium system package piece both sides portion is not plated blue base film one side axis department along aluminium system fin, copper flow tube is located aluminium system fin and aluminium system package piece middle part, aluminium system fin both sides are sinusoidal linear cambered surface structure, a plurality of U-shaped return bends have been welded respectively to copper flow tube both sides equidistance.
A solar heat absorption fin wrapped with a copper pipe comprises the following welding methods:
(1) stamping the aluminum wrapping sheet along the central axis of the length direction by a stamping lathe to form an inward concave arc along the length direction;
(2) the brazing filler metal is coated on one surface of the concave arc of the aluminum wrapping sheet and one surface of the non-plated blue base film of the aluminum fin along the central axis of the length direction;
(3) placing the copper flow tube along the central axis direction of the aluminum fin, and covering the aluminum wrapping sheet on the outer surface of the copper flow tube; extruding the contact parts of the two sides of the aluminum wrapping sheet and the aluminum fins while heating by using ultrasonic;
(4) and overturning the extruded plate sheet, and extruding the aluminum fin along the central axis direction to ensure that the aluminum fin is attached to the surface of the copper flow pipe.
Further, the method comprises the following steps of; the brazing filler metal is aluminum-based brazing filler metal.
Further, the method comprises the following steps of; and the outer surface of the copper flow tube is electroplated with metal aluminum.
Further, the method comprises the following steps of; the U-shaped bent pipe is tightly attached to the lower surface of the aluminum fin.
The invention has the beneficial effects that:
the copper flow tube is fixed between the aluminum wrapping sheet and the aluminum fin by welding the aluminum wrapping sheet and the aluminum fin, the surface of the copper flow tube does not need to be polished in the welding process, the copper flow tube is prevented from being damaged, the effect of protecting the copper flow tube can be achieved, moreover, when the copper flow tube is fixed, the aluminum wrapping sheet and the aluminum fin are directly welded, the welding instability phenomenon caused by different expansion coefficients of different materials is avoided, a welding seam cannot be generated on the surface of the fin during welding, oxide layers of the fin and the copper flow tube cannot be damaged, the fin is prevented from being corroded, the welded fin is fully wrapped with the copper tube at 360 degrees, the heat conduction contact surface is increased by more than 90%, and the heat conduction effect is improved.
Through installing a plurality of U-shaped return bends in copper flow tube both sides, increasing the area of contact of runner pipe and fin, increase heat absorption performance, set up aluminium system fin both sides and be sinusoidal linear cambered surface structure, increase the heat absorption area of fin, increase the heat absorption effect.
By arranging the brazing filler metal as the aluminum-based brazing filler metal, the change of the thermal expansion coefficient among materials is reduced, and the welding surface of the welded aluminum wrapping sheet and the aluminum fin is more stable.
The outer surface of the copper flow pipe is plated with metal aluminum to protect the copper flow pipe, so that the runner pipe is prevented from being corroded, an aluminum wrapping sheet is convenient to contact with the copper flow pipe better than an aluminum fin during welding, and the stability of a welding surface is improved.
The U-shaped bent pipe is tightly attached to the lower surface of the aluminum fin, so that the heat transfer effect between the aluminum fin and the U-shaped bent pipe is improved.
Drawings
FIG. 1 is a front view of the present invention;
FIG. 2 is a reverse structural view of the present invention;
in the figure: 1. an aluminum fin; 2. a copper flow tube; 3. aluminum wrapping sheets; a U-bend.
Detailed Description
The technical means, the creation features, the achievement purposes and the effects of the invention are easy to understand and understand, and the invention is further explained by combining the specific drawings.
Example 1
Shown in combination with fig. 1 and 2; the utility model provides a parcel copper pipe's solar energy heat absorption fin, includes aluminium system fin 1, copper flow tube 2, aluminium system package piece 3, and blue base film has been plated on 1 side surface of aluminium system fin, and the welding of 3 both sides portions of aluminium system package piece is in the one side axis department of no blue base film of plating along aluminium system fin 1, and copper flow tube 2 is located aluminium system fin 1 and 3 middle parts of aluminium system package piece, and 1 both sides of aluminium system fin are sinusoidal linear cambered surface structure, and the equidistance of 2 both sides of copper flow tube has welded a plurality of U-shaped return bends 12 respectively.
The U-bend 12 is closely attached to the lower surface of the aluminum fin 1.
A solar heat absorption fin wrapped with a copper pipe comprises the following welding methods:
(1) stamping the aluminum wrapping sheet 3 along the central axis of the length direction by a stamping lathe to form an inward concave arc along the length direction;
(2) the brazing filler metal is coated on the inner concave arc surface of the aluminum wrapping sheet 3 and the central axis of the non-plated blue base film surface of the aluminum fin 1 along the length direction;
(3) placing the copper flow tube 2 along the central axis direction of the aluminum fin 1, and covering the aluminum wrapping sheet 3 on the outer surface of the copper flow tube 2; extruding the contact parts of the two sides of the aluminum wrapping sheet 1 and the aluminum fins 1 while heating by ultrasonic;
(4) and overturning the extruded plate sheet, and extruding the aluminum fin 1 along the central axis direction to ensure that the aluminum fin 1 is attached to the surface of the copper flow pipe 2.
The brazing filler metal is aluminum-based brazing filler metal, so that the change of the thermal expansion coefficient among materials is reduced, and the welding surface of the aluminum wrapping sheet and the aluminum fin after welding is more stable.
Example 2
Shown in combination with fig. 1 and 2; the utility model provides a parcel copper pipe's solar energy heat absorption fin, includes aluminium system fin 1, copper flow tube 2, aluminium system package piece 3, and blue base film has been plated on 1 side surface of aluminium system fin, and the welding of 3 both sides portions of aluminium system package piece is in the one side axis department of no blue base film of plating along aluminium system fin 1, and copper flow tube 2 is located aluminium system fin 1 and 3 middle parts of aluminium system package piece, and 1 both sides of aluminium system fin are sinusoidal linear cambered surface structure, and the equidistance of 2 both sides of copper flow tube has welded a plurality of U-shaped return bends 12 respectively.
The U-bend 12 is closely attached to the lower surface of the aluminum fin 1.
A solar heat absorption fin wrapped with a copper pipe comprises the following welding methods:
(1) stamping the aluminum wrapping sheet 3 along the central axis of the length direction by a stamping lathe to form an inward concave arc along the length direction;
(2) the brazing filler metal is coated on the inner concave arc surface of the aluminum wrapping sheet 3 and the central axis of the non-plated blue base film surface of the aluminum fin 1 along the length direction;
(3) placing the copper flow tube 2 along the central axis direction of the aluminum fin 1, and covering the aluminum wrapping sheet 3 on the outer surface of the copper flow tube 2; extruding the contact parts of the two sides of the aluminum wrapping sheet 1 and the aluminum fins 1 while heating by ultrasonic;
(4) and overturning the extruded plate sheet, and extruding the aluminum fin 1 along the central axis direction to ensure that the aluminum fin 1 is attached to the surface of the copper flow pipe 2.
The brazing filler metal is aluminum-based brazing filler metal, so that the change of the thermal expansion coefficient among materials is reduced, and the welding surface of the aluminum wrapping sheet and the aluminum fin after welding is more stable.
As shown in fig. 1; the outer surface of the copper flow tube 2 is plated with metal aluminum to protect the copper flow tube and prevent the flow tube from being corroded, and the aluminum wrapping sheet and the aluminum fins are convenient to contact with the copper flow tube better during welding, so that the stability of a welding surface is improved.
The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (1)
1. The utility model provides a parcel copper pipe's solar energy heat absorption fin which characterized in that: the aluminum fin comprises an aluminum fin (1), a copper flow pipe (2) and an aluminum wrapping sheet (3), wherein a blue base film is plated on one side surface of the aluminum fin (1), two side parts of the aluminum wrapping sheet (3) are welded at the position of a central axis of the non-plated blue base film along the aluminum fin (1), the copper flow pipe (2) is positioned in the middle of the aluminum fin (1) and the aluminum wrapping sheet (3), two sides of the aluminum fin (1) are of sine linear arc surface structures, and a plurality of U-shaped bent pipes (12) are welded on two sides of the copper flow pipe (2) at equal intervals;
the welding method of the solar heat absorption fin wrapped by the copper pipe comprises the following steps:
(1) stamping the aluminum wrapping sheet (3) along the central axis of the length direction by a stamping lathe to form an inward concave arc along the length direction;
(2) the inner concave arc surface of the aluminum wrapping sheet (3) and the surface of the aluminum fin (1) without the blue-plated base film are coated with brazing filler metal along the central axis of the length direction;
(3) placing the copper flow tube (2) along the central axis direction of the aluminum fin (1), and covering the aluminum wrapping sheet (3) on the outer surface of the copper flow tube (2); extruding contact parts of two sides of the aluminum wrapping sheet (1) and the aluminum fins (1) while heating by ultrasonic;
(4) turning over the extruded plate, and extruding the aluminum fin (1) along the central axis direction to attach the aluminum fin (1) to the surface of the copper flow pipe (2);
the brazing filler metal is aluminum-based brazing filler metal;
the outer surface of the copper flow pipe (2) is electroplated with metal aluminum;
the U-shaped bent pipe (12) is tightly attached to the lower surface of the aluminum fin (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811033381.8A CN108856944B (en) | 2018-09-05 | 2018-09-05 | Solar heat absorption fin wrapped with copper pipe and welding method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811033381.8A CN108856944B (en) | 2018-09-05 | 2018-09-05 | Solar heat absorption fin wrapped with copper pipe and welding method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108856944A CN108856944A (en) | 2018-11-23 |
| CN108856944B true CN108856944B (en) | 2020-12-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201811033381.8A Active CN108856944B (en) | 2018-09-05 | 2018-09-05 | Solar heat absorption fin wrapped with copper pipe and welding method thereof |
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| CN (1) | CN108856944B (en) |
Citations (4)
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|---|---|---|---|---|
| DE10153368A1 (en) * | 2001-10-29 | 2003-05-08 | Ikarus Solar Ag | Method of connecting metal pipe to plate in solar collector has heat for weld provided by induction in fluid fed through pipe |
| CN1573255A (en) * | 2003-05-23 | 2005-02-02 | 潘戈 | Heat transferring core bar of solar energy collector |
| CN202048711U (en) * | 2011-04-20 | 2011-11-23 | 广东五星太阳能股份有限公司 | Fastener type flat absorber structure of solar energy |
| CN102721214A (en) * | 2012-07-03 | 2012-10-10 | 湖北长耀明太阳能股份有限公司 | Flow passage structure for flat-plate solar collector cores and machining method thereof |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202133142U (en) * | 2011-05-16 | 2012-02-01 | 杨宪杰 | Composite bushing type flat-plate solar collector with reverse omega-shaped section of runner pipe |
| US8869790B2 (en) * | 2012-06-06 | 2014-10-28 | Kunshan Jue-Chung Electronics Co., Ltd. | Flat hollow tube solar collector |
| CN103286526B (en) * | 2012-09-29 | 2016-04-20 | 陈静 | A kind of processing method of flat type solar heat collector heat-absorbing plate core |
| CN202902665U (en) * | 2012-09-29 | 2013-04-24 | 赵枫 | Heat absorption plate core of solar heat collector |
| CN103994590B (en) * | 2013-02-18 | 2016-05-25 | 大族激光科技产业集团股份有限公司 | Solar thermal collector and manufacture method thereof |
-
2018
- 2018-09-05 CN CN201811033381.8A patent/CN108856944B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10153368A1 (en) * | 2001-10-29 | 2003-05-08 | Ikarus Solar Ag | Method of connecting metal pipe to plate in solar collector has heat for weld provided by induction in fluid fed through pipe |
| CN1573255A (en) * | 2003-05-23 | 2005-02-02 | 潘戈 | Heat transferring core bar of solar energy collector |
| CN202048711U (en) * | 2011-04-20 | 2011-11-23 | 广东五星太阳能股份有限公司 | Fastener type flat absorber structure of solar energy |
| CN102721214A (en) * | 2012-07-03 | 2012-10-10 | 湖北长耀明太阳能股份有限公司 | Flow passage structure for flat-plate solar collector cores and machining method thereof |
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| Publication number | Publication date |
|---|---|
| CN108856944A (en) | 2018-11-23 |
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