Particle-from-gas separators

Claim 1

A PARTICLE-FROM-GAS SEPARATOR COMPRISING A CYLINDRICAL ENCLOSURE HAVING AN INLET FOR A PARTICLE-LADEN MAIN FLOW OF GAS AT ITS BOTTOM, AN ANNULAR SPACE AROUND SAID INLET FOR RECEIVING SEPARATED PARTICLE MATERIAL, AND A CLEAN GAS OUTLET OPENING AT THE TOP; NOZZLE MEANS FOR SUPPLYING AN AUXILIARY GAS FLOW, SAID NOZZLE MEANS COMMUNICATING WITH THE INTERIOR OF SAID ENCLOSURE AND TERMINATING AT THE INNER WEALL SURFACE OF SAID ENCLOSURE AND DIRECTED SO AS TO HAVE A FLOW DIRECTION APPROXIMATELY TANGENTIAL TO SAID WALL AND DOWNWARDLY INCLINED AT AN ACUTE ANGLE TO THE CROSS-SECTIONAL PLANE OF SAID ENCLOSURE FOR CAUSING THE AUXILIARY GAS FLOW TO EXCITE PARTICLE-SEPARATING CIRCULATORY MOTION IN THE MAIN FLOW OF GAS, SAID GAS INLET COMPRISING A TUBULAR DUCT PROTRUDING FROM BELOW INTO THE INTERIOR OF SAID CONTAINER AND TERMINATING BELOW SAID NOZZLE MEANS IN AN UPWARDLY WIDENING FUNNEL-SHAPED END PORTION SHOSE LARGEST DIAMETER IS SMALLER AHN THE INNER DIAMETER OF SAID CONTAINER TO FORM AT THE TOP OF SAID PARTICLERECEIVING ANNULAR SPACE AN ANNULAR GAP NARROWER THAN SAID SPACE, AND PARTICLE DISCHARGE MEANS EXTENDING DOWNWARDLY AWAY FROM SAID ANNULR SPACE, A STREAMLINED AND DROP-SHAPED BODY AXIALLY MOUNTED IN SAID ENCLOSURE AND HAVING A BULGING LOWER END LOCATED ADJACENT THE TOP OF SAID FUNNEL PORTION AND A POINTED UPPER END AJDACENT SAID GAS DUCT MEANS FOR SUPPLYING THE AUXILIARY GAS FLOW,