Solar heat-absorbing fin wrapped with copper tube and welding method of solar heat-absorbing fin wrapped with copper tube

A technology of solar heat absorption and welding methods, which is applied in welding equipment, metal processing equipment, manufacturing tools, etc., can solve the problems of easily damaged surface oxide layer, corrosion resistance of copper pipes, and remaining weld seams, so as to increase heat conduction effect, prevent corrosion, and increase the effect of heat conduction contact surface

Active Publication Date: 2018-11-23
东莞市湘江太阳能设备有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] What the present invention is to overcome is that when the solar heat-absorbing fins wrapping the copper tubes are welded on the front side, they are not firm, leaving weld seams, easily destroying the surface oxide layer, causing corrosion and poor pressure resistance of the copper tubes after welding. It is to provide a solar heat absorbing fin wrapped with a copper tube and a welding method thereof

Method used

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  • Solar heat-absorbing fin wrapped with copper tube and welding method of solar heat-absorbing fin wrapped with copper tube
  • Solar heat-absorbing fin wrapped with copper tube and welding method of solar heat-absorbing fin wrapped with copper tube

Examples

Experimental program
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Effect test

Embodiment 1

[0024] combine figure 1 , figure 2 Shown; a solar heat-absorbing fin wrapped in copper tube, including aluminum fin 1, copper flow tube 2, aluminum cladding sheet 3, one side surface of aluminum fin 1 is coated with blue base film, aluminum The two sides of the cladding sheet 3 are welded on the central axis along the side of the aluminum fin 1 without blue-plated base film, the copper flow tube 2 is located in the middle of the aluminum fin 1 and the aluminum cladding sheet 3, and the aluminum fin 1 Both sides are sinusoidal linear arc surface structures, and several U-shaped bends 12 are respectively welded at equal distances on both sides of the copper flow tube 2 .

[0025] The U-shaped elbow 12 is closely attached to the lower surface of the aluminum fin 1 .

[0026] A solar heat absorbing fin wrapped with a copper tube, the welding method of which is as follows:

[0027] (1), the aluminum cladding sheet 3 is stamped along the central axis of the length direction by a...

Embodiment 2

[0033] combine figure 1 , figure 2 Shown; a solar heat absorbing fin wrapping copper tube, including aluminum fin 1, copper flow tube 2, aluminum cladding sheet 3, one side surface of aluminum fin 1 is coated with blue base film, aluminum The two sides of the cladding sheet 3 are welded on the central axis along the side of the aluminum fin 1 without blue-plated base film, the copper flow tube 2 is located in the middle of the aluminum fin 1 and the aluminum cladding sheet 3, and the aluminum fin 1 Both sides are sinusoidal linear arc surface structures, and several U-shaped bends 12 are respectively welded at equal distances on both sides of the copper flow tube 2 .

[0034] The U-shaped elbow 12 is closely attached to the lower surface of the aluminum fin 1 .

[0035] A solar heat absorbing fin wrapped with a copper tube, the welding method of which is as follows:

[0036] (1), the aluminum cladding sheet 3 is stamped along the central axis of the length direction by a s...

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PUM

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Abstract

The invention relates to a solar heat-absorbing fin wrapped with a copper tube. The solar heat-absorbing fin wrapped with the copper tube comprises an aluminum fin, a copper flow tube, and an aluminumwrapping foil, wherein the surface of one side of the aluminum fin is plated with a blue base film, and the two side parts of the aluminum wrapping foil are welded at a central axis along the non-plated blue base film surface of the aluminum fin; a plurality of U-shaped elbows are respectively welded at both sides of the copper flow tube at equal distances. In the welding process of the invention, the surface of the copper flow tube is not required to be polished prevent the copper flow tube from being damaged, and achieve the effect of protecting the copper flow tube, so that the welding instability caused by different expansion coefficients of different materials is avoided, welds are not produced on the surface of the fin, the oxide layers of the fin and the copper flow tube cannot bedamaged to prevent corrosion, the welded fin is fully wrapped with the copper tube at 360 degrees, and the thermal conducting contact surface is increased by more than 90%, thereby increasing the thermal conducting effect.

Description

technical field [0001] The invention relates to the technical field of solar renewable energy utilization, in particular to a solar heat absorbing fin wrapped with a copper tube and a welding method thereof. Background technique [0002] The heat-absorbing fins of the traditional solar heat absorbing plate core and the flow channel tube adopt the front welding method, and the flow channel tube is directly welded to the aluminum fins. Since the flow channel tube is made of copper pipes and the fins are aluminum products, the two metal The expansion coefficient is different, thermal expansion and contraction after welding are easy to break. During the welding process, a white weld seam will be formed on the surface of the aluminum fin, which will affect the heat absorption performance of the aluminum fin and destroy the oxidation of the surface of the fin and copper tube. Layer, easy to cause corrosion, the contact surface between the welded fin and the copper tube does not ex...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K1/06
CPCB23K1/0012B23K1/06
Inventor 罗飞虎
Owner 东莞市湘江太阳能设备有限公司
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