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Method for producing an absorber for a solar collector, and a solar collector

a solar collector and absorber technology, applied in solar heat collectors, solar heat devices, solar heat devices, etc., can solve the problems of difficult mass production of solar collectors, low output, and difficulty in mass production, and achieve high welding quality, short time, and absorber stiff

Inactive Publication Date: 2013-10-24
RODOMACH SPECIAALMACHINES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

This patent proposes a method for producing leak-tight absorbers for solar collectors using laser welding. The method allows for high-speed production and easy leak-testing. The use of a stiff absorber results in a lighter construction and improved heat transfer. The thickness of the metal plates can be reduced, making the absorber more efficient and cost-effective. The technical effects of this patent are improved production speed, reliability, and reduced material use for a lighter construction.

Problems solved by technology

These known assemblies are difficult to produce in mass production, and have a relatively low output.
Production of such a solar collector in mass production proved difficult.

Method used

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  • Method for producing an absorber for a solar collector, and a solar collector
  • Method for producing an absorber for a solar collector, and a solar collector
  • Method for producing an absorber for a solar collector, and a solar collector

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Embodiment Construction

[0043]In FIGS. 1-7, various steps in a method for producing an absorber for a solar collector. In the step of FIG. 1, two metal plates 1 are already welded together at least along their perimeter, to form a pre-shape for an absorber. Furthermore, an inlet and an outlet have already been provided on the surface opposite of the surface that is visible. In FIG. 1, a press 2 with two dies 3, 4 that are currently spaced apart are ready to receive the welded metal plates 1. The lower die 4 is provide with two slots 5, 7 that can allow the inlet and outlet of the of the absorber to remain available. Two adapters 6, 8 are provided that can attach to the inlet and outlet of the absorber. In this embodiment, adapter 6 is attached to a source of fluid under pressure, and adapter 8 is here provided with a stop 9.

[0044]In FIG. 2, the two welded plates 1 that will become the absorber are placed into the press and with the inlet and outlet, that are provided in the lower of the two plates 1 that w...

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Abstract

A method for producing a solar heat absorber for a solar collector, the solar heat absorber having a fluid inlet and a fluid outlet. The method includes the steps of providing a first and a second substantially flat metal plate, laser welding the plates together at least along a perimeter of the plates, providing at least a circumferential weld while pressing the plates together, placing the welded plates in a press that provides its pressure at the weld or welds and the press applying a pressure of at least 200 tons per m2 of absorber, and then providing a fluid under a pressure to the absorber via at least one of the fluid inlet and the fluid outlet.

Description

FIELD OF THE INVENTION[0001]The invention relates to a method for producing an absorber for a solar collector, and a solar collector provided with such a solar heat absorber.BACKGROUND OF THE INVENTION[0002]Solar collectors as such are known in the art. Conventionally, conduits are provided in a serpentining manner and exposed to solar radiation. A fluid is led though the conduit in order to take up solar heat. These known assemblies are difficult to produce in mass production, and have a relatively low output.[0003]In EP1797373B1, a solar collector is disclosed that comprises a first substantially flat front plate for collecting solar energy, a second substantially flat back plate which is fixed at least substantially along the edges on the underside of the first plate, a space between the two plates, an inlet for feeding a liquid to the space, an outlet for discharging the liquid from the space, whereby the liquid can flow from the inlet to the outlet, wherein the space between th...

Claims

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Application Information

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IPC IPC(8): F24J2/26B21D53/04F24S10/75
CPCB21D53/045F28F3/14F24S10/506Y02E10/44Y10T29/49355Y10T29/49371Y10T29/49888
Inventor TE KAMP, BERNARD TEUNISDOORNEBOSCH, ROELOF
Owner RODOMACH SPECIAALMACHINES