Gas cleaning device

Claim 1

A DEVICE FOR SEPARATING PARTICULATE MATERIAL FROM A GAS COMPRISING A CHAMBER HAVING A FIRST END, INLET MEANS AT SAID FIRST END FOR DISCHARGING INTO SAID CHAMBER IN A ROTATIONAL PATTERN IN ONE DIRECTION A QUANTITY OF GAS AND PARTICULATE MATERIAL, SAID CHAMBER HAVING AN AXIS, AN OUTLET TUBE AT SAID FIRST END EXTENDING AXIALLY THEREIN, SAID CHAMBER HAVING AN INWARDLY TAPERING SECOND END PROVIDED WITH AN OPENING ADAPTED FOR CONNECTION TO A RECEPTACLE FOR PARTICULATE MATERIAL, AND MEANS FOR REMOVING PERIPHERAL PORTIONS OF THE GASES APPROACHING SAID OUTLET TUBE, SAID MEANS INCLUDING A DIFFUSER, SAID DIFFUSER HAVING AN INLET AXIALLY INWARDLY OF THE END OF SAID OUTLET TUBE, AN INNER WALL ADJACENT SAID DIFFUSER INLET, SAID INNER WALL DIVERGING TOWARD SAID FIRST END, AN OUTER WALL SURROUNDING SAID INNER WALL IN A SPACED RELATIONSHIP THEREWITH DEFINING A ZONE BETWEEN SAID WALLS, SAID INNER AND OUTER WALLS BEING JOINED AT THE INLET TO SAID DIFFUSER, SAID WALLS BEING CURVED WHERE THEY ARE SO JOINED THEREBY TO PROVIDE A ROUNDED ENTRANCE TO SAID DIFFUSER, RESTRICTED APERTURE MEANS IN SAID INNER WALL FOR PROVIDING COMMUNICATION TO THE ZONE BETWEEN SAID INNER AND OUTER WALLS, SAID INNER AND OUTER WALLS TERMINATING AT A POINT CIRCUMSCRIBING SAID OUTLET TUBE, A RESTRICTOR MEANS ADJACENT SAID TERMINATION OF SAID INNER WALL FOR ACCELERATING THE VELOCITY OF GASES ADJACENT THE SURFACE OF SAID INNER WALL, THEREBY LOWERING THE PRESSURE AT SAID TERMINATION OF SAID OUTER WALL FOR DECREASING THE PRESSURE IN SAID ZONE BETWEEN SAID WALLS AND CAUSING BOUNDARY LAYER FLOW THROUGH SAID RESTRICTED APERTURE MEANS, AND MEANS CIRCUMSCRIBING SAID OUTLET TUBE BEYOND SAID TERMINATION OF SAID INNER AND OUTER WALLS FOR RECEIVING MATERIAL THEREFROM AND CONDUCTING SAID MATERIAL TO A MEANS FOR SEPARATING PARTICULATE MATTER THEREFROM.

Claim 2

A DEVICE FOR SEPARATING PARTICULATE MATERIAL FROM A GAS COMPRISING A CHAMBER HAVING A FIRST END, INLET MEANS AT SAID FIRST END FOR DISCHARGING INTO SAID CHAMBER IN A ROTATIONAL PATTERN IN ONE DIRECTION A QUANTITY OF GAS AND PARTICULATE MATERIAL, SAID CHAMBER HAVING AN AXIS, AN OUTLET TUBE AT SAID FIRST END EXTENDING AXIALLY THEREIN, SAID CHAMBER HAVING AN INWARDLY TAPERING SECOND END PROVIDED WITH AN OPENING ADAPTED FOR CONNECTION TO A RECEPTACLE FOR PARTICULATE MATERIAL, AND MEANS FOR REMOVING PERIPHERAL PORTIONS OF THE GASES APPROACHING SAID OUTLET TUBE, SAID MEANS INCLUDING A DIFFUSER, SAID DIFFUSER HAVING AN INLET AXIALLY INWARDLY OF THE END OF SAID OUTLET TUBE, AN INNER WALL ADJACENT SAID DIFFUSER INLET, SAID INNER WALL DIVERGING TOWARD SAID FIRST END, AN OUTER WALL SURROUNDING SAID INNER WALL IN A SPACED RELATIONSHIP THEREWITH DEFINING A ZONE BETWEEN SAID WALLS, SAID INNER AND OUTER WALLS BEING JOINED AT THE INLET TO SAID DIFFUSER, SAID WALLS BEING CURVED WHERE THEY ARE SO JOINED THEREBY TO PROVIDE A ROUNDED ENTRANCE TO SAID DIFFUSER, RESTRICTED APERTURE MEANS IN SAID INNER WALL FOR PROVIDING COMMUNICATION TO THE ZONE BETWEEN SAID INNER AND OUTER WALLS, SAID INNER AND OUTER WALLS TERMINATING AT A POINT CIRCUMSCRIBING SAID OUTLET TUBE, A RESTRICTOR MEANS ADJACENT SAID TERMINATION OF SAID INNER WALL FOR ACCELERATING THE VELOCITY OF GASES ADJACENT THE SURFACE OF SAID INNER WALL, THEREBY LOWERING THE PRESSURE AT SAID TERMINATION OF SAID OUTER WALL FOR DECREASING THE PRESSURE IN SAID ZONE BETWEEN SAID WALLS AND CAUSING BOUNDARY LAYER FLOW THROUGH SAID RESTRICTED APERTURE MEANS, AND MEANS CIRCUMSCRIBING SAID OUTLET TUBE BEYOND SAID TERMINATION OF SAID INNER AND OUTER WALLS FOR RECEIVING MATERIAL THEREFROM AND CONDUCTING SAID MATERIAL TO A MEANS FOR SEPARATING PARTICULATE MATTER THEREFROM.