METHOD FOR MANUFACTURE OF MULTI-ELECTRODE COMPOSITE ELECTRIC HEATER Russian patent published in 2013 - IPC H05B3/28 

FIELD: electrical engineering.

SUBSTANCE: method for manufacture of a multi-electrode composite electric heater (MECEH) relates to resistive heating elements with application of electrically conductive composite materials and may be used for manufacture of composite electric heaters applied in industrial and agricultural productions. The manufacture method consists in shaping a package including a heat-emitting (electrically conductive) layer 1, positioned between the insulation layers 2. Placed inside the electrically conductive layer 1 is a system of electrodes 3 made of metal (e.g. copper or brass) grid; preliminarily soldered to the electrodes 3 are flexible contact leads 4 projecting outside the electric heater structure in the insulating jacket 5. The targeted change of the MECEH electrically conductive layer composition and the heater manufacture technological mod parameters has resulted in MECEHs with a negative temperature resistance coefficient α_p, which corresponds to decrease of the electrically conductive layer volume resistivity p_v combined with increase of temperature on the MECEH surface.

EFFECT: method for manufacture of a multi-electrode composite electric heater allows to ensure an energy efficient mode of the electric heater functioning with automatic adjustment of surface temperature without loss of the required operational and electrophysical characteristics.

2 dwg