Patent ID: 8578930
Filing Date: 2013-11-12
Classification: F24S,Y02E

Abstract:
1. A vacuum solar thermal panel, comprising: a vacuum envelope defining a sealed volume that is able to withstand atmospheric pressure when evacuated; at least one heat absorber disposed inside the vacuum envelope; and a pipe entering and exiting the envelope and in contact with the heat absorber, the vacuum envelope comprising a first plate made of glass, a second plate facing the first plate, both plates being delimited by edges, a perimeter frame disposed between the first and second plate close to their edges, a metallic perimeter belt joining the perimeter frame to the first plate, a bearing body disposed at the edges of the first and second plate, and traction rods joining said body with said perimeter frame, wherein the bearing body includes a plurality of spaced apart bearing elements, each provided with at least one of said traction rods, the bearing elements limit deformation of the perimeter frame under the atmospheric pressure when the envelope is evacuated, and end portions of the bearing elements are in direct contact with and pressed against the edges of the first and second plates to oppose an action of the atmospheric pressure, when the envelope is evacuated, that is transferred to the edges of the first and second plates, to limit the deformation of the perimeter frame under the atmospheric pressure.