Solar air heat collection system

The utility model discloses a solar air heat collection system which comprises a heat insulation bottom plate, heat insulation side plates, a heat collection plate, flow distribution orifice plates and double layers of hollow glass, wherein the heat insulation side plates are integrally connected with the periphery of the heat insulation bottom plate to define a groove-shaped structure; the heat collection plate is positioned inside the groove-shaped structure and is of a corrugated plate shape; the flow distribution orifice plates are positioned at the front side and the rear side of the heat collection plate; the double layers of hollow glass are connected to the tops of the heat insulation side plates in a sealing manner to form a box body; the upper side of the heat collection plate is in contact with the bottom surfaces of the double layers of hollow glass and the lower side of the heat collection plate is in contact with the heat insulation bottom plate so as to form a plurality of airflow troughs side by side; the flow distribution orifice plates are provided with through holes which correspond to the airflow troughs one to one; cavities are formed between the flow distribution orifice plates and the heat insulation side plates at both the front and rear sides so as to form flow distribution troughs; the heat insulation side plates at both the front and rear sides are respectively provided with an air inlet and an air outlet. Each through hole corresponds to one airflow trough defined by the heat collection plate and the double layers of hollow glass or the heat insulation bottom plate, both upper and lower heat exchange areas of the heat collection plate are utilized and the flow distribution troughs are formed in the front and at the back so as to enable airflow to be uniformly distributed. The double layers of hollow glass are beneficial to heat preservation air tightness and the utilization efficiency of solar energy is improved.