Electric central heating boiler - has corrugated edges on side walls and heaters along chamber axis

摘要

The electrical central heating boiler has a rectangular housing of two flat end-and side walls. The housing has several connected chambers, above each other, containing electrical heaters. The side wall of the chambers have zig-zag shaped opposite edges. The electrical heaters are positioned along the horizontal central axis of the chambers which have a rhomboid cross section. The edges enclose overflow apertures. The radial paths from the heaters to the apertures and to the side walls of the individual chamber are the same. This results in even heating of the water.