Slot type solar heat collector

The invention discloses a slot type solar heat collector which is characterized by comprising an open annular pipe, an absorbing coating, an insulating material and an inlet glass cover; the opening annular pipe is provided with an opening; the annular chamber body is internally provided with a heat-absorbing working fluid; the internal surface of the annular chamber body is provided with the absorbing coating; the external surface of the annular chamber body is provided with an insulating material; and the opening is connected with an inlet glass cover. In the invention, the slat type solar heat collector has the advantages that the severe requirements of the traditional vacuum pipe on the vacuum can be overcome, the structure can be greatly simplified, the manufacturing cost is obviously reduced, the characteristic of high absorption rate of the black chamber is sufficiently utilized, the gathered light beam is absorbed sufficiently, the heat collecting efficiency is high, the structure is simple, the maintenance is convenient, the cost is low, and the defects that the traditional slot-type system solar absorber-vacuum heat collecting pipe is inconvenient to machine and manufacture and has high machining charge and manufacturing charge, great technical difficulty, short service life and the like can be solved.