All-plastic sandwich solar collector

摘要

All-plastic, sandwich solar collector designed as self-supporting and spatially flexible, comprising a body formed from a frame, two outer plates (2), a top plate and a bottom plate, between which a heat absorber plate (3) is placed parallel, whereby both outer plates (2) are designed as transparent plastic panels containing throughout the whole length at least one row of channels separated from one another, and the heat absorber plate (3) likewise contains throughout the whole length at least one row of flow channels separated from one another and at both ends throughout the whole width of the heat absorber plate (3) is fitted with a profile containing a connecting gutter (19), a distribution channel (20) and an end piece (21) of the distribution channel for inlet or outlet of the heat-bearing fluid, characterised in that the outer plates (2) are fixed in the frame (1), which is formed from straight parts and corner elements, and at least the straight parts of the two longer diametrically opposed sides from the internal side of the frame (1) are fitted with a guidance ledge (22), for seating the heat absorber plate (3), whereby the guidance ledge (22) is, in the middle area, as regards the length of the collector, is fitted with at least one fixing pin (10) for freely snapping into at least one slot (4) at the respective points of the edges of the heat absorber plate (3) for allowing dilation movement of the heat absorber plate (3) lengthwise and crosswise, whereby the frame (1) is fitted with lengthwise side openings (12), and each lengthwise side opening (12) is equipped with a flexible collar (13) for sealing the space between the end piece (21) of the distribution channel (20) and the frame (1), whereby the parallel position of the heat absorber plate (3) between the top plate (2) and the bottom plate is maintained by a system of spacers (5) fixed on the inner surfaces of the outer plates (2), and, between the said outer plates (2) and the heat absorber plate (3) an insulation layer is created in the form of an air gap given by the size of the spacers (5).