| 摘要 |
FIELD: heating. ^ SUBSTANCE: heating element includes working part and current leads; at that, working part is made of in-series connected coaxially arranged tubes and the length of current leads and working part is restricted with axial slots in longitudinal centreline plane and annular connection strap at the edge of inner or outer thread. Number of axial slots in heating element can be equal to the number of alternating current phases and at least one of tubes is made of annular and spiral ruffles. ^ EFFECT: increasing specific heat removal and improving reliability. ^ 3 cl, 1 dwg |
