ELECTRIC CONVECTOR Russian patent published in 1998 - IPC

FIELD: air heating. SUBSTANCE: proposed electric convector is designed for heating of air in rooms by way of free convection. It has body of cellular shape with inlet and outlet holes, electric insulation supports, main heating elements with electric insulation backing covered on one side by resistive material placed in parallel and coupled to supports. Additional heating elements 4 are located above main and heating elements 3 at distance less than pitch t of heating elements. Their vertical axes 7, 8 of geometric symmetry match. Ratio of pitch t of heating elements to common height H of main and additional heating elements t/H = 1/15...1/45, ratio of common height H to width B of heating element H/B = 3...6. Lower and upper walls of body are manufactured in the form of covers with rectangular holes and holes made in the form of double-row slots. Covers have ellipse-like shape with minor and major axes which elliptic contours are made by mating of arcs of circles of different radii and by ends of major axis - by mating of arcs of circles with straight lines parallel to minor axis. EFFECT: improved heating efficiency. 3 dwg