Absorber for a thermal collector of a solar system and method for the production thereof

Abstract

The invention relates to an absorber for a solar system comprising a pipe system for the heat transfer medium, which is disposed between two superimposed metal sheets, and a method for producing said absorber. Heat exchange between the absorber metal sheets and the pipe system is improved while production costs are reduced.

1 .- 18 . (canceled)  
   
   
       19 . An absorber for a thermal collector of a solar installation, comprising: 
 two metal sheets arranged one on top of the other forming an absorber wing for light and heat conversion, the two metal sheets defining a pipe system therebetween for conducting a heat transfer medium, wherein a shape of the pipe system is introduced into at least one of the two metal sheets;    an adhesive bonding the two metal plates to one another; and    a formfitting connection between the two metal plates, the formfitting connection being a clinched connection.    
   
   
       20 . The absorber of  claim 19 , wherein said formfitting connection comprises a plurality of Tox points.  
   
   
       21 . The absorber of  claim 19 , wherein said adhesive is heat resistant and impermeable to the vapor of the heat conducting medium up to at least 200° C.  
   
   
       22 . The absorber of  claim 21 , wherein said adhesive is one of a silicone, epoxide resin, or phenol resin adhesive.  
   
   
       23 . The absorber of  claim 19 , wherein at least regions of said two metal sheets forming interior surfaces of said pipe system are surface treated.  
   
   
       24 . The absorber of  claim 23 , wherein said regions of the two metal sheets forming interior surfaces of said pipe system comprise a coating that inhibits at least one of corrosion and oxidation.  
   
   
       25 . The absorber of  claim 19 , wherein a material of said two metal sheets is one of an aluminum alloy, steel, and copper.  
   
   
       26 . The absorber of  claim 24 , wherein each of said two metal sheets is an anodized aluminum sheet.  
   
   
       27 . The absorber of  claim 25 , wherein each of the two metal sheets is an anodized aluminum sheet.  
   
   
       28 . The absorber of  claim 24 , wherein each of the two metal sheets is a steel sheet with one of a plastic or copper coating.  
   
   
       29 . The absorber of  claim 25 , wherein each of said two metal sheets is a steel sheet with one of a plastic or copper coating.  
   
   
       30 . The absorber of  claim 19 , wherein said two metal sheets are cold-formed to define said pipe system.  
   
   
       31 . A method for manufacturing an absorber for a thermal collector of a solar installation, the absorber including two metal sheets arranged one on top of the other forming an absorber wing for light and heat conversion, the two metal sheets defining a pipe system therebetween for conducting a heat transfer medium, said method comprising the steps of: 
 cold forming at least one of two metal sheets of the absorber for introducing a shape of the pipe system;    joining the two metal sheets using an adhesive; and    generating a formfitting connection between the two metal sheets using clinching.    
   
   
       32 . The method of  claim 31 , wherein the adhesive is resistant to the heat transfer medium and maintains adhesive properties within the temperature range of −30° C. to 200° C.  
   
   
       33 . The method of  claim 31 , further comprising the step of straightening the two metal sheets before said step of cold forming.  
   
   
       34 . The method of  claim 31 , wherein said step of cold forming comprises one of embossing or deep drawing.  
   
   
       35 . The method of  claim 31 , further comprising the step of cutting the two metal sheets to a size of the absorber before said step of using the adhesive.  
   
   
       36 . The method of  claim 31 , further comprising the step of cutting the two metal sheets to a size of the absorber after said step of using the adhesive.  
   
   
       37 . The method of  claim 31 , wherein said step of joining includes applying temperature-dependent adhesive to each of the two metal sheets and heating the two metal sheets to a defined temperature to initiate the adhesive effect of the temperature-dependent adhesive.  
   
   
       38 . The method of  claim 31 , further comprising subjecting at least the areas of the two metal sheets to be joined using adhesive to a surface treatment comprising one of a mechanical, thermal, or chemical treatment.  
   
   
       39 . A thermal collector for a solar installation comprising an absorber including two metal sheets arranged one on top of the other forming an absorber wing for light and heat conversion, the two metal sheets defining a pipe system therebetween for conducting a heat transfer medium, wherein a shape of the pipe system is introduced into at least one of the two metal sheets, an adhesive bonding the two metal plates to one another, and a formfitting connection between the two metal plates, the formfitting connection being a clinched connection.