Patent ID: 6935345

Claim:
A method for generating small bubbles for a smoke filled air stream, where the smoke filled air stream is generated by human inhalation of air through burning vegetable matter causing the smoke filled air stream to be drawn through an intervening water stage, comprising: (a) generating the smoke filled air stream; (b) drawing the smoke filled air stream into a lower opening of a largest bore of an outer housing, the bore having a longitudinal axis from the lower opening to an upper opening, whereto human inhalation vacuum force is applied as the sole force for generating the smoke filled air stream; (c) providing a first plate that seals the bore except for a first opening in the first plate about the bore axis and also providing an open ended tube extending from the edges of the first opening along the bore axis to a first height, whereby the smoke filled air stream flows from the first opening through the open ended tube to a second opening at the first height; (d) providing an enclosure for the open ended tube with a cap on top of walls that extend up from a top surface of the plate to define a first annular space between an outside surface of the tube and an inside surface of the walls and a second annular space between an outside surface of the walls and an inside surface of the bore, where small accelerator openings are provided at a lower part of the walls between the first and second annular spaces; (e) providing a water based liquid in the second annular space and flowing the smoke filled air stream from the second opening of the tube through the first annular space, substantially accelerating the smoke filled air stream by flowing it through the small accelerator openings and forming small bubbles therewith in the water based liquid; and (f) flowing the small bubbles to a surface of the water based liquid and thereby reducing the temperature of the smoke filled air and capturing a substantial portion of its undesirable components to form a first cleaned smoke stream.