| 摘要 |
FIELD: heating. ^ SUBSTANCE: in heat-transfer surface from metal strips wound along spiral, comprising extruded support and thrust spheroid segments, in alternating spheroid segments, having identical height, convex side of support spheroid segment has concavity, curvature of which equals curvature of convex part of thrust spheroid segment, and after winding of metal strips along spiral, convex part of thrust spheroid segment of one strip matches concave part of support spheroid segment of the second strip. ^ EFFECT: these structural features of spheroid segments design make it possible manufacturability of heat-transfer surface production, to reduce its cost by reduction of height of extruded spheroid segments. ^ 2 dwg |
