Absorber for a solar heating panel

Abstract

An absorber for a solar heating panel, designed to contain heat-bearing liquid, and including first and second metal plates fixed to each other in a sealed manner, a matrix of geometrical shapes applied in relief on each of the first and second plates, with the matrices being staggered so as to trace a path for the circulation of heat-bearing liquid in the absorber, and first and second end-pieces placed at the ends of either of the plates so as to provide for circulation of heat-bearing liquid in the absorber, wherein the metal plates are copper plates, and in that non-traversing mechanical connecting means are used to attach the two copper plates together.

1 . An absorber for a solar heating panel, designed to contain heat-bearing liquid, and including:
 first and second metal plates fixed to each other in a sealed manner,   a matrix of geometrical shapes applied in relief on each of the first and second plates, with the matrices being staggered so as to trace a path for the circulation of heat-bearing liquid in the absorber, and   first and second end-pieces placed at the ends of either of the plates so as to provide for the circulation of heat-bearing liquid in the absorber,   wherein both metal plates are attached together by non-traversing connecting means, and wherein the upper face of the top plate, exposed to light radiation is in copper.   
   
   
       2 . The absorber according to  claim 1 , wherein the connection between both plates is obtained by ultrasonic welding. 
   
   
       3 . The absorber according to  claim 2 , wherein ultrasonic welds are applied on at least part of the contact zones between the two plates, located between the geometrical shapes. 
   
   
       4 . The absorber according to  claim 3 , wherein an ultrasonic weld is applied on each of the contact zones between the two plates, located between the geometrical shapes. 
   
   
       5 . The absorber according to  claim 4 , wherein a continuous ultrasonic weld is applied along all of edges of both plates. 
   
   
       6 . The absorber according to  claim 1 , wherein the connection between the two plates is achieved by clinching. 
   
   
       7 . The absorber according to  claim 1 , wherein the connecting means are rivets, clamping the two plates without traversing either. 
   
   
       8 . The absorber according to  claim 1 , wherein the bottom plate ( 11 ) is in Aluminium. 
   
   
       9 . The absorber according to  claim 1 , wherein the upper face of the top plate, exposed to light radiation, is chrome-plated. 
   
   
       10 . The absorber according to  claim 1 , wherein the geometrical shape is elliptical. 
   
   
       11 . The absorber according to  claim 10 , wherein the elliptical geometrical shape is circular. 
   
   
       12 . The absorber according to  claim 1 , wherein the geometrical shape is a general bowl shape. 
   
   
       13 . The absorber according to  claim 1 , wherein the end-pieces are positioned in a diagonally opposite manner on the lower face of the bottom plate. 
   
   
       14 . The absorber according to  claim 13 , wherein the end-pieces are placed on flat portions of the bottom plate facing the geometrical shapes of the top plate. 
   
   
       15 . A solar heating panel including an absorber placed in a frame and covered with a glass plate, wherein the absorber is designed to contain heat-bearing liquid, and includes first and second metal plates fixed to each other in a sealed manner, a matrix of geometrical shapes applied in relief on each of the first and second plates, with the matrices being staggered so as to trace a path for the circulation of heat-bearing liquid in the absorber, and first and second end-pieces placed at the ends of either of the plates so as to provide for the circulation of heat-bearing liquid in the absorber, wherein both metal plates are attached together by non-traversing connecting means, wherein the upper face of the top plate, exposed to light radiation is in copper. 
   
   
       16 . The solar heating panel according to  claim 15 , wherein the bottom plate is in aluminium and wherein the bottom plate is sustained by internal shoulders of the panel. 
   
   
       17 . A process for the manufacture of an absorber for a solar heating panel designed to contain heat-bearing liquid, including the following stages:
 to cut the first and second metal plates;   to stamp the first plate by means of a press that includes a matrix of elliptical shapes, so as to produce from it a first matrix of corresponding geometrical shapes;   to stamp the second plate with an offset by means of the press, so as to produce from it a second matrix of geometrical shapes that are offset in relation to the first matrix of the first plate;   to put in place two end-pieces located at the ends of either of the plates;   to attach without traversing the two plates together in a sealed manner;   
   
   
       18 . The manufacturing process according to  claim 17 , wherein both plates are connected together by ultrasonic welding. 
   
   
       19 . The manufacturing process according to  claim 18 , wherein the stamping stages are implemented by means of a press that includes a matrix or die of geometrical elliptical shapes. 
   
   
       20 . The manufacturing process according to  claim 19 , wherein the matrix of geometrical shapes of the press is asymmetrical, and in that the stamping stages are effected by introducing the first and second plates respectively into each end of the press.