POROUS ELECTRIC HEATER FOR GAS Russian patent published in 1996 - IPC

FIELD: gas heating devices. SUBSTANCE: porous electric heater has housing with gas inlet and outlet pipes accommodated heating element made of loose electricity conducting material and connected to current leads; placed on butt ends of housing are moving and fixed screens provided with gas passage holes; current leads are installed in side walls of housing on inlet pipe side; screens made of insulating material mount insulating partitions installed vertically within housing on part of its height forming zigzag channel in electricity conducting material. EFFECT: improved reliability and service life of electric heater.