| 摘要 |
<p>A compact boiler (100) suited for portable usage in generating hot water and/or steam is described. The boiler (100) incorporates just one helical coil (106) formed from a spirally corrugated metal pipe of 1 mm thick, 20 mm diameter stainless steel wound into a single helix with the peaks of the corrugations of adjacent turns just touching one another. The spirally corrugated pipe resembles a screw having four starts. A series of concentric baffles (108, 109, 110) ensure that hot gases from a burner will pass over or between the pipe of the helix (106) several times, thereby improving the transfer of heat to the water contained within the pipe.</p> |
