WebCPC CPC COOPERATIVE PATENT CLASSIFICATION

B04C　APPARATUS USING FREE VORTEX FLOW, e.g. CYCLONES ({centrifugal separation of water from steam B01D 45/12;} jet mills B02C 19/06; {wind sifters B07B 7/00;} cyclonic type combustion apparatus F23; {vortex burners for cyclone-type combustion apparatus F23D 1/02; cyclonic type combustion apparatus for gas turbines F23R 3/00})

B04C 1/00 Apparatus in which the main direction of flow follows a flat spiral; {so-called flat cyclones or vortex chambers}

B04C 3/00 Apparatus in which the axial direction of the vortex {(flow following a screw-thread type line)} remains unchanged {Also devices in which one of the two discharge ducts returns centrally through the vortex chamber, a reverse-flow vortex being prevented by bulkheads in the central discharge duct (combined with other devices B04C 9/00)}

B04C 3/02 ・with heating or cooling, e.g. quenching, means

B04C 3/04 ・Multiple arrangement thereof {(combined with types according to other groups, B04C 7/00)}

B04C 3/06 ・Construction of inlets or outlets to the vortex chamber

B04C 5/00 Apparatus in which the axial direction of the vortex is reversed {(combined with other devices B04C 9/00)}

B04C 5/02 ・Construction of inlets by which the vortex flow is generated {e.g. tangential admission, the fluid flow being forced to follow a downward path by spirally wound bulkheads, or with slightly downwardly-directed tangential admission}(fluid dynamics in general F15D)

B04C 5/04 ・・Tangential inlets

B04C 5/06 ・・Axial inlets

B04C 5/08 ・Vortex chamber constructions

B04C 5/081 ・・Shapes or dimensions

B04C 5/085 ・・with wear-resisting arrangements

B04C 5/087 ・・with flexible gas-tight walls

B04C 5/10 ・・with perforated walls

B04C 5/103 ・・Bodies or members, e.g. bulkheads, guides, in the vortex chamber (cores B04C 5/107)

B04C 5/107 ・・Cores; Devices for inducing an air-core in hydrocyclones (forming part of the outlet pipe B04C 5/13)

B04C 5/12 ・Construction of the overflow ducting, e.g. diffusing or spiral exits

B04C 5/13 ・・formed as a vortex finder and extending into the vortex chamber {(exits with bulkheads preventing reverse flow vortex B04C 3/00)}; Discharge from vortex finder otherwise than at the top of the cyclone; Devices for controlling the overflow

B04C 5/14 ・Construction of the underflow ducting; Apex constructions; Discharge arrangements; {discharge through sidewall provided with a few slits or perforations (provided with a great number of slits or perforations B04C 5/10)}

B04C 5/15 ・・with swinging flaps or revolving sluices; Sluices; Check-valves

B04C 5/16 ・・with variable-size outlets from the underflow ducting

B04C 5/18 ・・with auxiliary fluid assisting discharge

B04C 5/181 ・・Bulkheads or central bodies in the discharge opening

B04C 5/185 ・・Dust collectors

B04C 5/187 ・・・forming an integral part of the vortex chamber

B04C 5/20 ・with heating or cooling, e.g. quenching, means

B04C 5/22 ・with cleaning means

B04C 5/23 ・・using liquids

B04C 5/24 ・Multiple arrangement thereof {(combination types according to other /00 groups, B04C 7/00)}

B04C 5/26 ・・for series flow

B04C 5/28 ・・for parallel flow

B04C 5/30 ・・Recirculation constructions in or with cyclones which accomplish a partial recirculation of the medium, e.g. by means of conduits

B04C 7/00 Apparatus not provided for in group B04C 1/00, B04C 3/00, or B04C 5/00; Multiple arrangements not provided for in one of the groups B04C 1/00, B04C 3/00, or B04C 5/00; Combinations of apparatus covered by two or more of the groups B04C 1/00, B04C 3/00, or B04C 5/00

B04C 9/00 Combinations with other devices, e.g. fans, {expansion chambers, diffusors, water locks}(with filters B01D 50/00)

B04C 11/00 Accessories, e.g. safety or control devices, not otherwise provided for {e.g. regulators, valves in inlet or overflow ducting}(with electrostatic precipitating arrangements B03C 3/14)

B04C 2003/00 Apparatus in which the axial direction of the vortex {(flow following a screw-thread type line)} remains unchanged {Also devices in which one of the two discharge ducts returns centrally through the vortex chamber, a reverse-flow vortex being prevented by bulkheads in the central discharge duct (combined with other devices B04C 9/00)}

B04C 2003/003 ・Shapes or dimensions of vortex chambers

B04C 2003/006 ・Construction of elements by which the vortex flow is generated or degenerated

B04C 2005/00 Apparatus in which the axial direction of the vortex is reversed {(combined with other devices B04C 9/00)}

B04C 2005/12 ・Construction of the overflow ducting, e.g. diffusing or spiral exits

B04C 2005/13 ・・formed as a vortex finder and extending into the vortex chamber {(exits with bulkheads preventing reverse flow vortex B04C 3/00)}; Discharge from vortex finder otherwise than at the top of the cyclone; Devices for controlling the overflow

B04C 2005/133 ・・・Adjustable vortex finder

B04C 2005/136 ・・・Baffles in the vortex finder

B04C 2009/00 Combinations with other devices, e.g. fans, {expansion chambers, diffusors, water locks}(with filters B01D 50/00)

B04C 2009/001 ・with means for electrostatic separation

B04C 2009/002 ・with external filters

B04C 2009/004 ・with internal filters, in the cyclone chamber or in the vortex finder

B04C 2009/005 ・with external rotors, e.g. impeller, ventilator, fan, blower, pump

B04C 2009/007 ・with internal rotors, e.g. impeller, ventilator, fan, blower, pump

B04C 2009/008 ・with injection or suction of gas or liquid into the cyclone