Solar energy freeze proof flat heat collector

The utility model discloses a solar energy freeze proof flat heat collector. The cheap and easy producing prefabricated grid cavity liner bushing is used to prefabricate the grid cavity liner bushing, producing new freeze proof collector, and in the long dimension racking pipes, a middle collecting pipe of the open pore grid cavity liner bushing is additionally provided, and the middle collecting pipe can firmly protect the racking pipes as the bamboo joint and avoids the danger of the long dimension racking pipes being frozen to crack. The elastic heat preservation separating belt on the periphery of the collecting pipe can make the water in the collecting pipe freeze slowly, freeze a little, and even not freeze, improving the freeze proof ability and the freezing order of the heat collection core plate, and can support and protect the glass cover plate of the heat collector; the air blanketing of the heat collector is divided into an upper temperature province and a lower temperature province by the elastic heat preservation separating belt to reduce the heat dissipation caused by the air entirety heat convection from top to bottom in the heat collector, and thereby the entirety heat efficiency is raised.