B04C1/00	7	Apparatus in which the main direction of flow follows a flat spiral {; so-called flat cyclones or vortex chambers}	B04C1/00	B04C1/00		366
B04C3/00	7	Apparatus in which the axial direction of the vortex {flow following a screw-thread type line} remains unchanged {; 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 B04C9/00)}	B04C3/00	B04C3/00		1059
B04C2003/003	8	{Shapes or dimensions of vortex chambers}	B04C3/00	B04C3/00		124
B04C2003/006	8	{Construction of elements by which the vortex flow is generated or degenerated}	B04C3/00	B04C3/00		385
B04C3/02	8	with heating or cooling, e.g. quenching, means	B04C3/02	B04C3/02		82
B04C3/04	8	Multiple arrangement thereof {(combined with types according to other groups, B04C7/00)}	B04C3/04	B04C3/04		514
B04C3/06	8	Construction of inlets or outlets to the vortex chamber	B04C3/06	B04C3/06		882
B04C5/00	7	Apparatus in which the axial direction of the vortex is reversed {(combined with other devices B04C9/00)}	B04C5/00	B04C5/00		604
B04C5/02	8	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)	B04C5/02	B04C5/02		368
B04C5/04	9	Tangential inlets	B04C5/04	B04C5/04		1194
B04C5/06	9	Axial inlets	B04C5/06	B04C5/06		171
B04C5/08	8	Vortex chamber constructions	B04C5/08	B04C5/08		595
B04C5/081	9	Shapes or dimensions	B04C5/081	B04C5/081		1014
B04C5/085	9	with wear-resisting arrangements	B04C5/085	B04C5/085		201
B04C5/087	9	with flexible gas-tight walls	B04C5/087	B04C5/087		12
B04C5/10	9	with perforated walls	B04C5/10	B04C5/10		185
B04C5/103	9	Bodies or members, e.g. bulkheads, guides, in the vortex chamber (cores B04C5/107)	B04C5/103	B04C5/103		1176
B04C5/107	9	Cores; Devices for inducing an air-core in hydrocyclones (forming part of the outlet pipe B04C5/13)	B04C5/107	B04C5/107		203
B04C5/12	8	Construction of the overflow ducting, e.g. diffusing or spiral exits	B04C5/12	B04C5/12		685
B04C5/13	9	formed as a vortex finder and extending into the vortex chamber {(exits with bulkheads preventing reverse flow vortex B04C3/00)}; Discharge from vortex finder otherwise than at the top of the cyclone; Devices for controlling the overflow	B04C5/13	B04C5/13		941
B04C2005/133	10	{Adjustable vortex finder}	B04C5/13	B04C5/13		84
B04C2005/136	10	{Baffles in the vortex finder}	B04C5/13	B04C5/13		86
B04C5/14	8	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 B04C5/10)}	B04C5/14	B04C5/14		1095
B04C5/15	9	with swinging flaps or revolving sluices; Sluices; Check-valves	B04C5/15	B04C5/15		248
B04C5/16	9	with variable-size outlets from the underflow ducting	B04C5/16	B04C5/16		86
B04C5/18	9	with auxiliary fluid assisting discharge	B04C5/18	B04C5/18		195
B04C5/181	9	Bulkheads or central bodies in the discharge opening	B04C5/181	B04C5/181		231
B04C5/185	9	Dust collectors	B04C5/185	B04C5/185		814
B04C5/187	10	forming an integral part of the vortex chamber	B04C5/187	B04C5/187		145
B04C5/20	8	with heating or cooling, e.g. quenching, means	B04C5/20	B04C5/20		261
B04C5/22	8	with cleaning means	B04C5/22	B04C5/22		275
B04C5/23	9	using liquids	B04C5/23	B04C5/23		99
B04C5/24	8	Multiple arrangement thereof {(combination types according to other /00 groups, B04C7/00)}	B04C5/24	B04C5/24		390
B04C5/26	9	for series flow	B04C5/26	B04C5/26		659
B04C5/28	9	for parallel flow	B04C5/28	B04C5/28		996
B04C5/30	9	Recirculation constructions in or with cyclones which accomplish a partial recirculation of the medium, e.g. by means of conduits	B04C5/30	B04C5/30		132
B04C7/00	7	Apparatus not provided for in group B04C1/00, B04C3/00, or B04C5/00; Multiple arrangements not provided for in one of the groups B04C1/00, B04C3/00, or B04C5/00; Combinations of apparatus covered by two or more of the groups B04C1/00, B04C3/00, or B04C5/00	B04C7/00	B04C7/00		665
B04C9/00	7	Combinations with other devices, e.g. fans, {expansion chambers, diffusors, water locks}(with filters B01D50/00)	B04C9/00	B04C9/00		3177
B04C2009/001	8	{with means for electrostatic separation}	B04C9/00	B04C9/00		207
B04C2009/002	8	{with external filters}	B04C9/00	B04C9/00		584
B04C2009/004	8	{with internal filters, in the cyclone chamber or in the vortex finder}	B04C9/00	B04C9/00		506
B04C2009/005	8	{with external rotors, e.g. impeller, ventilator, fan, blower, pump}	B04C9/00	B04C9/00		320
B04C2009/007	8	{with internal rotors, e.g. impeller, ventilator, fan, blower, pump}	B04C9/00	B04C9/00		272
B04C2009/008	8	{with injection or suction of gas or liquid into the cyclone}	B04C9/00	B04C9/00		262
B04C11/00	7	Accessories, e.g. safety or control devices, not otherwise provided for {, e.g. regulators, valves in inlet or overflow ducting}(with electrostatic precipitating arrangements B03C3/14)	B04C11/00	B04C11/00		963
