| 摘要 |
PROBLEM TO BE SOLVED: To provide a heat collector of a solar heat utilization system superior in workability in construction, improved in design by saving a space, and further capable of lowering component costs by applying a simple structure.SOLUTION: A heat collector 11 includes a heat collector case 25 accommodating a heat collection plate 21 provided with a flow channel 19 of a heat medium, an inlet/outlet pipe 33 connected to the heat collection plate 21 at its one end opening portion 35, and having a cylindrical seal face 41 disposed on an inner peripheral face of the other end opening portion 37 penetrated through a bottom surface 69 of the heat collector case 25 to be led out, a joint pipe 45 of which an insert-side end portion inserted to the inlet/outlet pipe 33 has a fitting seal portion 47 having an O-ring 43 tightly kept into contact with the cylindrical seal face 41, and a flange portion 49, and a fixing metal fitting 61 having a bottom surface-side holding piece 65 holding the flange portion 49 between a tip portion provided with an U-shaped cutout 67 and the other end opening portion 37, and a side face-side fixing piece vertically disposed on a rear end portion of the bottom surface-side holding piece 65 and fixed to a side face 59 of the heat collector case 25. |
