Solar energy heat collector

Abstract

A solar energy heat collector includes two water transport ducts, a plurality of branch water ducts and heat collection plates. The water transport ducts are located on two sides of the heat collector having two opposing sides with a plurality of fastening holes formed thereon to be coupled with two ends of the branch water ducts by soldering. Each of the heat collection plates has an upper side with a downward concaved holding portion formed thereon and fastening portions on two sides. One fastening portion on one side is bent upwards and another on another side is bent downwards. The holding portion is bonded to a lower side of the branch water duct, and the connection juncture of the branch water duct and the heat collection plate is fastened by soldering. The fastening portions are bonded and overlapped in series in an up and down manner and fastened by soldering.

1 . A solar energy heat collector, comprising at least:
 two water transport ducts which are located on two sides of the solar energy heat collector and have two opposing sides each has a plurality of fastening holes formed thereon;   a plurality of branch water ducts each having two ends with undulant portions formed thereon to be coupled with the fastening holes of the two water transport ducts and fastened by soldering; and   a plurality of heat collection plates each having an upper side bending downwards to form a holding portion corresponding to and fastened to a lower side of the branch water duct by soldering, the holding portion having one side bending upwards in a parallel manner and another side bending downwards in a parallel manner to form to fastening portions, the fastening portions of neighboring heat collection plates being bonded together in series.   
   
   
       2 . The solar energy heat collector of  claim 1 , wherein the series bonding of the fastening portions of the neighboring heat collection plates is done by soldering. 
   
   
       3 . The solar energy heat collector of  claim 1 , wherein the series bonding of the fastening portions of the neighboring heat collection plates is done through fastening elements. 
   
   
       4 . The solar energy heat collector of  claim 3 , wherein the fastening elements are screws or rivets.