An air-curtain incinerator for burning energetic materials. Both
the volume f air and the angle at which air enters the fire box
are remotely controllable. The combustion process is monitored,
and the air volume and angle at which air enters the fire box are
controlled to minimize the production of air pollutants by the combustion
of energetic materials.
An air flow supplied by a duct 10 adjacent a melt furnace 3 is
normally directed downwardly through a plurality of nozzles 12 in
the bottom of the duct towards a floor grate 13 or the like communicating
with an exhaust duct 14, to thereby form a heat shielding air curtain
11 to protect the operator/controller. During the initial start-up
period of the filament draw forming operation, however, a pivotal
damper plate 15 adjacent the supply duct may be raised to deflect
the air flow across the bottom of the orifice plate 4 of the melt
furnace 3, to thereby cool the molten glass cones at the orifice
exits and increase their viscosity, which serves to stabilize the
filament forming conditions and prevent adjacent cones/filaments
from converging together.
A kitchen ventilator has a first outlet for connection to an evacuation
duct and a second outlet for recirculation air. The pressure side
of the fan is connected to these outlets by means of a valve. A
duct from the valve to a odor removal filter adjacent the second
outlet forms a plenum chamber, the bottom of which is the bottom
wall of the ventilator housing. In this bottom wall openings are
provided for producing a downwards flowing air curtain only when
the valve is set for recirculation.
Apparatus operable by actuating a trigger to cause high-pressure
air from a compressor to jet out from the front end opening of a
nozzle and to simultaneously produce an air curtain in the form
of a conical air layer surrounding the air jet and spreading out
from an annular fine clearance provided approximately at the base
portion of the nozzle.