Flat-plate solar collector and manufacturing method thereof

Abstract

The invention relates to an application of solar energy equipment, and particularly relates to a flat-plate solar collector and a manufacturing method thereof. The manufacturing method of the flat-plate solar collector comprises the steps of: 1) molding 0.4mm aluminium sheet by using a rolling machine or a mould pressing machine, thereby enabling rows of round projections and oval projections on an absorber plate; 2) putting a branch pipe in the oval projections and fixing by using aluminum foil belt; 3) fixing a baseboard and the absorber plate, and filling the gap between a double-faced aluminum foil extruded sheet and the absorber plate by using polyurethane foaming agent; 4) spray coating matte black fluorocarbon paint on the surface of the absorber plate, installing frames with glass cotton sliver inside on four sides of the absorber plate, then pressing an euphotic layer and an insulating layer by using depression bars. The invention has low production cost and wide application.

Description

technical field [0001] The invention relates to a device utilizing solar energy, in particular to a flat solar heat collector and a manufacturing method thereof. Background technique [0002] Existing flat-panel solar collectors generally use 8 mm circular branch pipes and 22 mm main pipes to form a waterway network. Aluminum heat-absorbing plates are welded on the branch pipes. The contact area between the heat plate and the branch pipe water channel is small, and the diameter of the main pipe and the branch pipe is small, resulting in large water resistance, low conduction efficiency, and slow heat absorption speed when the collector is used in a large area. Vacuum laser sputtering blue film technology, laser or ultrasonic welding and other processes are used, and the equipment process is complicated, resulting in high processing costs for flat solar collectors. Contents of the invention [0003] The object of the present invention is to provide a flat solar heat collec...

AI Technical Summary

Problems solved by technology

[0002] Existing flat-panel solar collectors generally use 8 mm circular branch pipes and 22 mm main pipes to form a waterway network. Aluminum heat-absorbing plates are welded on the branch pipes. The contact area between the heat plate and the branch pipe water channel is small, and the diameter of the main pipe and the branch pipe is small, resulting in large water resistance, low conduction efficiency, and slow heat absorption speed when the collector is used in a large area. Vacuum laser sputtering blue film process, laser or ultrasonic welding and other processes, the equipment process is complex, resulting in high processing costs for flat solar collectors

Images