ELECTRIC HEATER OF FLUID MEDIUM Russian patent published in 1994 - IPC

FIELD: electrical engineering. SUBSTANCE: electric heater of fluid medium has bearing frame produced from heat-resisting electric insulation material, for instance, from ceramics. Bearing frame has shape of bar, for instance, on its both sides there are provided slots arranged in staggered order. Slots can have cross-section of dove tail, triangle, rectangle and so on. Heating element is multiply bent metal strip with turns and longitudinal corrugations made over whole length of metal strip. Sections points of attachment of strip are wider than slots, they are installed in specified slots and are retained in them thanks to forces generated as a result of elastic deformation of loop of cross-section of strip. EFFECT: facilitated manufacture, simplified design. 3 cl, 4 dwg