DE2623642A1 - Turned-up edges on front and rear plates of a solar absorber - forming a frame on which the other components can be fitted - Google Patents

Abstract

Mfg. cost of a solar energy absorber is reduced formed of two similar metal plates, the space between which defines the water channels, and which have a transparent cover sheet in front, and heat-insulating material at sides and back. The metal plates are to have turned-up edges on all four sides (forming a frame for the transparent cover, and lodging-spaces for the insulation). The turned-up edges can be formed by bending, deep-drawing, welding, etc. A film may be (shrink-)fitted to the frame to form the transparent cover and to hold the insulation in place.

Description

Solar flat plate collector

Flat-plate collectors are known whose absorbers are in a fixed frame are held, or. correspond to a box-like construction, these design features guarantee a stable and torsion-resistant design, but require a corresponding = the effort and price.

If one wants to promote the utilization of the solar energy, that it in greater Dimensions can apply, the associated units must, in the present Trap flat plate collectors, can be offered at an affordable price.

It is the object of the invention described below, by constructive Measures particularly favorable costs for the production of flat plate collectors This is essentially solved by removing the absorber of the flat col = lector consists of two identical or similar metal plates attached to their four side edges have raised margins, with the raised margins fulfill the function of a frame.

This frame-forming raised position of the side edges of the absorber plate also fulfill the task of also holding the transparent ones Cover, e.g. the glass pane or the film and the inclusion of the side how to ensure rear isolation.

The frame-forming superscript gives the made of very thin sheet metal Absorber a very stable and torsion = rigid border so that the envelope of the absorber with simple effort, e.g. through a foil to a collector can be pletted.

The individual absorber sheet can also be designed as a deep-drawn part.

Further details of an exemplary embodiment are to be taken from the following description and the ibb. I-IV, as well as the claims 1, -5.

Fig. 1 shows the absorber of a flat-plate collector in plan view without wrapping.

Fig. II shows the absorber in a longitudinal section with a cover.

Fig. III shows the absorber in cross section with casing.

Fig. IV shows an example of a non-isosceles border, The flat plate collector (1) has an absorber (2), which by two identical or similar metal plates (3) and (4) is formed, the metal plates (3) and (4) of the absorber (2) have two long and two short side edges raised edges (5) by raising the edges (5) of the panels (3) and (4) a circumferential space (6) for receiving insulation materials is formed, furthermore becomes a receiving space on the surface of the metal plate forming the back (4) formed, the space (6) can by a thin plastic profile (7) which also can be formed as a shrink profile from the rear insulating space that is to be closed (8) can be closed by a metal or plastic plate (9), the metal plate (4) has two Ansohlußstutzen (10). The space (11) through the raised Edges (5) of the metal plate (3) is created by a glass plate or a transparent one The metal plates (3) and (4) of the collector (2) have grooves (13), which form water-filling channels (14) when-; the plates (3) and (4) in interconnected as shown, e.g. by welding, soldering or Adhere.

The envelope of the absorber (2), which is carried out in the manner shown the border (6), the plate (9) and the transparent surface (12) is formed, can also formed by a transparent shrink film tube, not shown will. In this case the isolation of the Room (6) and the The space (8) must be filled with corresponding molded insulation parts. For shrinking a double-walled knobs = structural shrink film would also be advantageous suitable.

Another embodiment is shown in Figure IV, where the Metal plate (15) and the metal plate (16) are bent at right angles and are unequal Legs on = have.1) This would have the advantage that the distance between optimally dimension the transparent surface (17) and the absorber surface (18) could, whereas the insulation thickness between the metal plate (16) and the rear Plate (19) could also be made of any size.

In this embodiment, too, it is thought that the Umran extension (20), the rear cover (19) and the transparent cover (17) in one operation to be accomplished by wrapping with shrink film.

Claims (5)

Patent and protection claims solar panel, consisting of a made of two identical or similar metal plates, one absorber transparent cover and a side and rear surrounding the absorber Isolation, characterized in that each of the two metal plates on its four Side edges have raised edges. 2. Flat solar collector according to claim 1, characterized = characterized in that the raised edges of the two metal plates of the absorber by bending or deep drawing are made and the edge of one metal plate must be larger can be used as the edge of the other metal plate. 3. Flat solar panel according to claims 1.-2. characterized in that in each case the raised edge of the metal plate is not integral with the metal plate must be, but can be connected to this by welding or the like. 4. Flat solar collector according to claims 1-3. characterized by that the spaces created by the edges to the front through a transparent wall and closed by a cover on the sides and back. 5. Flat solar collector according to claims 1.-3. characterized by this the front space formed by the edges, the side and the rear space through a foil, in particular by a shrink foil, is closed.