Electrically heated non-toxic smoke generator

Details Electrically heated non-toxic smoke generator Electrically heated non-toxic smoke generator

1980-04-04

1982-09-14

Bartis, A.

Electric heating

Heating devices

Resistive element: igniter type

43129, 122 40, 122 41, 219273, 219275, 219325, 219365, 239136, 252302, 252359R, 252359CG, H05B 100, F22B 2700, B01F 1300

Patent

active

043497233

ABSTRACT:
A non-toxic smoke generator for simulating the smoke of a fire includes an nner cylindrical shell surrounded in spaced relation by a thermally insulated outer casing to form an air flow passage therebetween through which compressed air heated by electric air heaters is caused to flow in a helical pattern to heat the shell to a temperature above the vaporization temperature of a vaporizable smoke substance. The smoke substance, such as propylene glycol, polyethylene glycol 200 or mineral oil, is pumped from a reservoir through a supply pipe having a coiled preheating portion disposed in the space between the shell and housing and is sprayed through a wide spray atomizing nozzle into heated vaporization chamber where it is vaporized and discharged as non-toxic smoke.

REFERENCES:
patent: 219311 (1879-09-01), Salisbury
patent: 377228 (1888-01-01), Bartlett
patent: 734871 (1903-07-01), Hopwood et al.
patent: 736652 (1903-08-01), Taboulevitsch
patent: 1322374 (1919-11-01), Trumble
patent: 1475589 (1923-11-01), Marden
patent: 1627668 (1927-05-01), Robbins
patent: 2451019 (1948-10-01), Davis
patent: 2569809 (1951-10-01), Flynn
patent: 2850615 (1958-09-01), Luse, Jr. et al.
patent: 3003279 (1961-10-01), Bonanno
patent: 3242098 (1966-03-01), Andrews
patent: 3410986 (1968-11-01), Groom

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