Ventilation – Having protecting air current – Including suction outlet
Patent
1990-02-09
1991-12-24
Joyce, Harold
Ventilation
Having protecting air current
Including suction outlet
454 56, 454 63, F24F 900
Patent
active
050741985
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
The method concerns a focussed ventilation procedure and an apparatus used in this procedure.
Focussed ventilation apparatuses of air impurities are known in the art in which suction is focussed on a work site -specific source of impurities. The impurities are drawn off from the work space prior to entering the respiratory zone of the person working in said work spot.
SUMMARY OF THE INVENTION
The object is a focussed ventilation procedure of a completely novel type and a respective means with which it has been feasible to enhance considerably the removal of air impurities from a work space.
The focussed ventilation method of the invention is mainly characterized in that in the method suction is focussed on a source of impurities of a work space and the operation of the focussed suction is assisted with the air blown from an incoming air means from a wide surface area at low speed.
The focussed ventilation means of the invention is mainly characterized in that the apparatus comprises at least one suction means and at least one incoming air means which have been disposed to be located in the vicinity of a source of impurities of a work space so that through said suction means a suction is focussed on the source of impurities of this work spot and that the operation of said suction is assisted with an air mass blown from said incoming air means.
BRIEF DESCRIPTION OF THE DRAWINGS
The invention is described hereinafter referring to some advantageous embodiments of the invention presented in the figures of the drawing but to which the invention is not exclusively intended to be confined.
FIG. 1A presents a partially schematic view of first advantageous embodiment of the procedure and the means design of the invention.
FIG. 1B presents a partially schematic view of second advantageous embodiment.
FIG. 1C presents a partially schematic view of third advantageous embodiment of the means and the procedure of the invention.
FIG. 1D presents a partially schematic view of fourth advantageous embodiment of the procedure and the means of the invention.
FIG. 1E presents a partially schematic view of fifth advantageous embodiment of the procedure and the means of the invention.
FIG. 1F presents a partially schematic view of the apparatus of the invention in axonometric view.
FIG. 2 presents a view along the lines I--I of the apparatus of FIG. 1F, and in the illustration of the figure is also included the person working in the work spot and the structure of the working table.
FIG. 3A presents in axonometric principle view a side wall which in position is adjustable horizontally.
FIG. 3B presents in axonometric the coupling of the side wall with a rail in a second embodiment of the rail design deviating from FIG. 3A.
FIG. 4 presents the operation of the means of the invention in principle. The presentation is axonometric.
FIG. 5 presents an axonometric view embodiment of the means of the invention in which the means is moved relative to the vertical wall and the means is open from below.
FIG. 6 presents a partially schematic view of the adjustment of the lower focussed suction and the upper focussed suction of the means of the invention.
FIG. 7A presents an elevated view of an embodiment of the means of the invention in which a first focussed suction from below is located approximately on the floor level.
FIG. 7B presents an elevational view showing the adjustability of the partition in vertical level.
DESCRIPTION OF THE PREFERRED EMBODIMENTS
In the invention the entire air mass of the work space is brought into slow movement. The direction of movement is so selected that the air of the work spot containing impurities and/or excess heat moves off from the work spot without entering the respiratory zone of the person working in the work spot.
As shown in FIG. 1A, such a focussed ventilation apparatus is used in the procedure as comprises at least one suction means 11 and at least one incoming air means 12. With the air of the suction means 11, suction is focussed on the source of impuriti
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Aalto Erkki
Alapuranen Tapio
Eloranta Jouko
Pellinen Teuvo
Halton Oy
Joyce Harold
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