DE10123293A1 - Soldering method for fixing solar collector absorber pipes to collector plate uses uniform heating for distribution of solder across collector plate and melting of solder for fixing absorber pipes - Google Patents
Soldering method for fixing solar collector absorber pipes to collector plate uses uniform heating for distribution of solder across collector plate and melting of solder for fixing absorber pipesInfo
- Publication number
- DE10123293A1 DE10123293A1 DE10123293A DE10123293A DE10123293A1 DE 10123293 A1 DE10123293 A1 DE 10123293A1 DE 10123293 A DE10123293 A DE 10123293A DE 10123293 A DE10123293 A DE 10123293A DE 10123293 A1 DE10123293 A1 DE 10123293A1
- Authority
- DE
- Germany
- Prior art keywords
- sheet
- solder
- tubes
- pipes
- collector plate
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Classifications
-
- 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
- B23K1/008—Soldering within a furnace
-
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S10/00—Solar heat collectors using working fluids
- F24S10/70—Solar heat collectors using working fluids the working fluids being conveyed through tubular absorbing conduits
- F24S10/75—Solar heat collectors using working fluids the working fluids being conveyed through tubular absorbing conduits with enlarged surfaces, e.g. with protrusions or corrugations
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S25/00—Arrangement of stationary mountings or supports for solar heat collector modules
- F24S25/60—Fixation means, e.g. fasteners, specially adapted for supporting solar heat collector modules
- F24S2025/6011—Fixation means, e.g. fasteners, specially adapted for supporting solar heat collector modules by welding or brazing
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/40—Solar thermal energy, e.g. solar towers
- Y02E10/44—Heat exchange systems
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Physics & Mathematics (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Thermal Sciences (AREA)
- Combustion & Propulsion (AREA)
- Dispersion Chemistry (AREA)
- General Engineering & Computer Science (AREA)
- Coating With Molten Metal (AREA)
- Lining Or Joining Of Plastics Or The Like (AREA)
Abstract
Description
Die vorliegende Erfindung betrifft ein Verfahren zur dauerhaften Verbindung von Rohren auf einem Blech mittels Lötverfahrens, wobei die Rohre eine größere Wandstärke aufweisen als das Blech.The present invention relates to a method for permanently connecting pipes a sheet metal by means of a soldering process, the tubes having a greater wall thickness than the sheet.
Es ist bekannt, Rohre, beispielsweise Kupferrohre, mit einem Blech, wie etwa einem Kupferblech durch Anlöten dauerhaft zu verbinden. Dabei wird zwischen dem Blech und den Rohren Lötzinn eingebracht und das Blech mit den Rohren anschließend zur Erwärmung des Lötzinns über den Schmelzpunkt in einen Ofen eingebracht.It is known to use pipes, for example copper pipes, with a sheet metal, such as one Connect copper sheet permanently by soldering. It is between the sheet and the Pipes of solder are introduced and the sheet metal with the pipes is then used to heat the Solder tin is brought into an oven above the melting point.
Dieses bekannte Verfahren wird bereits für die Herstellung von Absorbern von Sonnenkollektoren angewandt, ist jedoch nur für Bleche von höchstens 2,5 Meter Länge geeignet, da es bei längeren Blechen zu Verziehungen kommt. Dieses Problem liegt darin begründet, dass die Rohre eine wesentlich größere Wandstärke aufweisen als das Blech und somit bei der Erwärmung im Ofen Rohr und Blech unterschiedliches Erwärmungs- bzw. Auskühlverhalten zeigen. So weisen etwa die Rohre von Sonnenenergieabsorbern eine Wandstärke von etwa 0,5 bis 1 Millimeter auf, während das Blech auf dem die Rohre fixiert sind, eine Stärke von etwa 0,1 bis 0,3 Millimeter hat.This known method is already used for the production of absorbers Solar panels are used, but is only for sheets no more than 2.5 meters in length suitable, since there is distortion with longer sheets. That is the problem justifies that the tubes have a much greater wall thickness than the sheet and thus different heating or Show cooling behavior. For example, the tubes of solar energy absorbers have one Wall thickness of about 0.5 to 1 millimeter, while the sheet on which the pipes are fixed are about 0.1 to 0.3 millimeters thick.
Die vorliegende Erfindung stellt sich daher die Aufgabe, ein Verfahren der eingangs genannten Art zu schaffen, welches die Herstellung von wesentlich längeren Absorbern ermöglicht, bei dem aber trotzdem zuverlässig keine Verziehungen und damit keine Verfärbungen der Blechoberfläche, speziell auf ihrer Rückseite auftreten. The present invention therefore has as its object a method of the beginning to create the type mentioned, which is the production of much longer absorbers enables, but still no distortions and therefore none Discoloration of the sheet metal surface, especially on the back, may occur.
Diese Aufgabe wird dadurch gelöst, dass das mit den Rohren bestückte Blech in eine Aufheizvorrichtung eingebracht wird, in welcher die Wärmeeinbringung gleichmäßig über die gesamte Blechfläche erfolgt und wobei der Wärmetransport zum Lötzinn über das Blech erfolgt.This task is solved in that the sheet metal equipped with the tubes is in a Heating device is introduced in which the heat input evenly over the The entire sheet area takes place and the heat is transported to the tin via the sheet he follows.
Es hat sich als besonders vorteilhaft erwiesen, wenn die Aufwärmphase auf die erforderliche Temperatur von beispielsweise 250°C und ebenso die Abkühlphase relativ kurz sind. Zur Erzielung qualitativ zufriedenstellender Produkte sind weniger als 20 Minuten je Phase empfehlenswert. Besonders gute Ergebnisse wurden erzielt, wenn die Aufwärmung und die Abkühlung in jeweils etwa 5 Minuten erfolgten.It has proven to be particularly advantageous if the warm-up phase to the required Temperature of, for example, 250 ° C and also the cooling phase are relatively short. to Achieving qualitatively satisfactory products is less than 20 minutes per phase recommended. Particularly good results were achieved when the warming up and the Cooling took place in about 5 minutes each.
Das erfindungsgemäße Verfahren ist sowohl für Öfen, die im Standverfahren arbeiten, als auch für Öfen, welche im Durchlaufverfahren arbeiten geeignet.The inventive method is both for ovens that work in the standing process, as Also suitable for furnaces that work in a continuous process.
Als besonders vorteilhaft hat es sich erwiesen, das Blech aufgrund seines spezifischen Widerstandes mittels elektrischer Energie aufzuheizen.It has proven to be particularly advantageous to use the sheet metal on account of its specific Heating resistance by means of electrical energy.
Das erfindungsgemäße Verfahren eignet sich besonders gut zur Verbindung von Kupferrohren mit einem Kupferblech, wobei auch beim Einsatz von beschichtetem Kupferblech keine Verfärbungen zu befürchten sind.The method according to the invention is particularly suitable for connecting Copper pipes with a copper sheet, even when using coated Copper sheet no discoloration are to be feared.
Ein typisches Ausführungsbeispiel nach dem erfindungsgemäßen Verfahren weist folgende
Verfahrensparameter auf:
Es wird ein beschichtetes Kupferblech mit einer Länge von 6 Metern, einer Breite von 1
Meter und einer Stärke von 0,2 Millimeter mit 8 Rohren bestückt, wobei die Rohre
gleichmäßig über die Fläche des Bleches verteilt werden und wobei ein Blechrand von etwa 5
Zentimeter verbleibt. Die Rohre weisen einen Außendurchmesser von 8 Millimeter und eine
Wandstärke von 0,5 Millimeter auf. Zwischen den Rohren und dem Blech befindet sich ein
Lötzinngemenge.
A typical embodiment according to the method according to the invention has the following method parameters:
A coated copper sheet with a length of 6 meters, a width of 1 meter and a thickness of 0.2 millimeters is fitted with 8 tubes, the tubes being distributed evenly over the surface of the sheet and leaving a sheet edge of about 5 centimeters , The tubes have an outer diameter of 8 millimeters and a wall thickness of 0.5 millimeters. There is a mixture of solder between the tubes and the sheet.
Das bestückte Blech wird in einen Ofen eingebracht und über eine Aufheizfläche, welche mit elektrischem Strom erwärmt wird, innerhalb von 5 Minuten auf 250°C erhitzt. Anschließend wird das mit den Rohren verbundene Blech wiederum innerhalb von 5 Minuten auf Normaltemperatur abgekühlt. Die Rohre sind dauerhaft mit dem Blech verbunden und bilden gemeinsam mit diesem ein Absorberregister.The loaded sheet is placed in an oven and over a heating surface, which with electric current is heated, heated to 250 ° C within 5 minutes. Subsequently the sheet metal connected to the pipes will turn on again within 5 minutes Normal temperature cooled down. The pipes are permanently connected to the sheet and form together with this an absorber register.
Claims (8)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT0035600U AT4436U1 (en) | 2000-05-16 | 2000-05-16 | METHOD FOR PERMANENTLY CONNECTING TUBES ON A SHEET |
Publications (1)
Publication Number | Publication Date |
---|---|
DE10123293A1 true DE10123293A1 (en) | 2002-10-10 |
Family
ID=3488428
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE10123293A Withdrawn DE10123293A1 (en) | 2000-05-16 | 2001-05-13 | Soldering method for fixing solar collector absorber pipes to collector plate uses uniform heating for distribution of solder across collector plate and melting of solder for fixing absorber pipes |
Country Status (2)
Country | Link |
---|---|
AT (1) | AT4436U1 (en) |
DE (1) | DE10123293A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN114505583A (en) * | 2022-02-25 | 2022-05-17 | 柳州宏德激光科技有限公司 | Welding device for positive pole of cylindrical battery |
-
2000
- 2000-05-16 AT AT0035600U patent/AT4436U1/en not_active IP Right Cessation
-
2001
- 2001-05-13 DE DE10123293A patent/DE10123293A1/en not_active Withdrawn
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN114505583A (en) * | 2022-02-25 | 2022-05-17 | 柳州宏德激光科技有限公司 | Welding device for positive pole of cylindrical battery |
Also Published As
Publication number | Publication date |
---|---|
AT4436U1 (en) | 2001-07-25 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8139 | Disposal/non-payment of the annual fee |