Importance

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Abstract

An apparatus and method for controllably generating simulated smoke from a simulated smoke-generating fluid which has a vaporizing chamber with an inlet, an outlet, and walls extending therebetween so as to substantially enclose the chamber and define a chamber cross section which is substantially the same as an annular space between the walls. The chamber has a center line between an inlet wall and an outlet wall such that the center line is declined from the horizontal from the inlet wall to the outlet wall. A lower surface in the chamber is substantially co-extensive with a major portion of inside surfaces of lowermost portions of the walls and terminates at one end thereof near the inlet in a surface terminus of defined width. Smoke fluid is distributed along the terminus so that the smoke fluid is flowable by gravity downwardly across the surface as a thin film. Heaters and heater controls are used to control the heating of the chamber and the surface to a temperature sufficient to cause the smoke fluid to vaporize into a vapor. An ejector ejects the vapor out of the chamber through the outlet into a mixer which communicates with heated air for mixing the vapor and heated air and producing the simulated smoke.

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First Claim