Infrared Conveyor Furnace with Single Belt and Multiple Independently Controlled Processing Lines

A conveyor, heat treatment furnace technology, applied in the direction of post-processing, post-processing details, chemical instruments and methods, etc.

Inactive Publication Date: 2017-08-01
TP SOLAR OF USA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There is an unmet need to provide thermal signature control for individual wafer lines in the entire area in a double wide dual furnace without increasing the furnace width

Method used

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  • Infrared Conveyor Furnace with Single Belt and Multiple Independently Controlled Processing Lines
  • Infrared Conveyor Furnace with Single Belt and Multiple Independently Controlled Processing Lines
  • Infrared Conveyor Furnace with Single Belt and Multiple Independently Controlled Processing Lines

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Embodiment Construction

[0131] The following embodiments illustrate the invention, but do not limit the scope, equivalents or principles of the invention. This description will clearly enable those skilled in the art to make and use the invention, and describes several embodiments, adaptations, variations, substitutions and uses of the invention.

[0132] In this regard, the invention is illustrated in several drawings and is sufficiently complex that its many parts, interrelationships and subcombinations cannot be fully described by a single patent-type drawing. For the sake of clarity and conciseness, some of the figures show schematic or omitted parts, which in the figures are not necessary to illustrate the specific features, aspects or principles disclosed in the invention. For example, the numerous electrical and pneumatic connections for lights, brakes and lift bellows, well known to those skilled in the art, are not shown in the figures. Thus, one feature may be shown in one drawing and anot...

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Abstract

The present invention relates to an infrared conveyor furnace with a single belt and multiple independently controlled processing lines, a multi-zone infrared solar cell processing furnace using a single full width conveyor belt; selected zones are divided into multiple zones by upper and / or lower longitudinal dividing walls and heated by high-intensity radiating infrared lamps against a flat plate of ultra-highly reflective ceramic material. The number and spacing of lights in each zone / line may vary. Individually and independently control the power of each upper and lower lamp or array of zone / line lamps to provide multiple temperature profiles in each heating zone / line. In multi-wire areas, the infrared lamps are folded and the inner ends are supported by the wire dividers. The power lines outside the lights all enter from one side of the furnace. The lamp inner filament includes non-radiating and radiating sections that are arranged to have a pair of radiating sections aligned and disposed across the full width of the solar cell wafer in a folded lamp configuration.

Description

technical field [0001] The present application is directed to an improved infrared conveyor furnace particularly suitable for the metallization firing of screen printed silicon solar cell wafers, wherein at least one zone, preferably a high intensity firing zone ("peak" zone) is formed longitudinally Two independently controllable lines; and an independently controllable firing method for each line, thereby enabling higher production throughput and efficiency of the resulting solar cell photovoltaic modules. The improved furnace configuration system features a single conveyor belt that moves horizontally at selectable speeds from an entry end through multiple zones of an infrared furnace to an exit end, wherein at least one zone is divided longitudinally into two side-by-side zones, each zone having Its own dedicated infrared light set. Each set of lights can be controlled independently to provide a unique thermal signature in each side-by-side line. Background technique ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C30B33/04
Inventor 理查·W·帕克斯路易斯·阿雷安卓·芮·加希亚彼得·G·拉给
Owner TP SOLAR OF USA
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