Smoke generator method and apparatus

Details Smoke generator method and apparatus Smoke generator method and apparatus

1997-01-24

1999-02-09

Paschall, Mark H.

Electric resistance heating devices

Heating devices

Vaporizer

392397, A61H 3306, F22B 2906

Patent

active

058705244

ABSTRACT:
A smoke generator apparatus and method are provided in which the apparatus has a pump connected to a source of liquid smoke agent and to an electrical resistance heating tube incorporated into an electrical circuit. The heating tube has a smoke outlet orifice and a temperature sensor located adjacent the orifice. A switch control circuit has a connection to the temperature sensor and controls the start-up and shut-down operation of the smoke generator by the activation of the pump, electrical resistance heating tube, and the turning on and off of a fluid injector circuit and an air blower for cooling the heater tube. The fluid injector has a source of fluid connected to the heater tube adjacent the orifice and has a valve for activating the flow of fluid from the source of fluid into the heater tube during start-up and shut-down of the smoke generator. The method includes selecting the smoke generating apparatus, switching on the apparatus to activate the gas injector to inject gas into one end of the heater tube and to activate the pump to pump a liquid smoke agent into the heater tube to generator smoke. The air blower activated to cool down the heater tube at shut-down and the fluid injector again injects a fluid, such as a nitrogen gas, into the heater tube at shut-down.

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