Full vacuum flat-plate solar collector

Abstract

An evacuated flat plate solar collector is provided, which comprises a solar heat exchanging body and a chamber. The solar heat exchanging body comprises a liquid inlet header (14) and a liquid outlet header (15) which are communicated with each other by at least two heat absorbing tubes (11). A heat absorption plate (8) is tightly contacted with the heat absorbing surface of each heat absorbing tube (11). The chamber is a vacuum room (6), in which the solar heat exchanging body is disposed. The vacuum room (6) is composed of a face plate, a bottom plate and a metal frame (5) set along the peripheries of the face plate and the bottom plate, wherein the face plate is a glass plate (1), and the bottom plate is a glass plate (1) or a metal plate (9). A metal strip (2), which is provided at the periphery of the glass plate (1), is adhered to the glass plate (1) into an integrated entity. The metal materials at the peripheries of the face plate and the bottom plate are welded with the metal frame (5), thereby achieving the sealing of the vacuum room (6). A supporting device composed of a positioning bracket (10) and a plurality of supporting bodies (7) is disposed between the face plate and the bottom plate, wherein the supporting bodies (7) are fixed on the positioning bracket (10). The supporting bodies (7) are supported between the face plate and the bottom plate after passing through the corresponding holes at the heat absorption plate (8).

Description

technical field [0001] The invention relates to a solar heat collector, in particular to a full-vacuum flat-plate solar heat collector. Background technique [0002] Solar energy is a highly efficient energy source that does not cause environmental pollution. With the development of science and technology, the application fields of solar energy are becoming wider and wider. [0003] In many solar energy application fields, solar collectors are used earlier by people. There are concentrating solar collectors and heat-absorbing solar collectors, especially heat-absorbing solar collectors are more widely used. . [0004] Among the heat-absorbing solar collectors, there is one that uses high-efficiency heat-absorbing tubes, which are made of two glass blind tubes with different diameters, and the beginning and end are flame-burned, sealed, and vacuum-pumped. , this kind of heating tube, the glass tube used in it is very vulnerable to damage during transportation, installation ...

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to provide a new all-vacuum flat-plate solar collector for a series of problems such as the processing cost of the current solar heat exchanger, or the thermal efficiency is not high, or the volume is too large, or it is difficult to assemble and assemble in use.

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