B
SECTION B — PERFORMING OPERATIONS
  
SEPARATING AND MIXING
 B04
CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES (using centrifugal force for the separation of particles from liquids or gases, in general B01D, e.g. B01D 21/26, B01D 43/00, B01D 45/12)
 B04C
APPARATUS USING FREE VORTEX FLOW, e.g. CYCLONES
 B04C

Note(s)

This sub-class deals with apparatus for separating, mixing or like treating in which centrifugal effects are generated by free vortex flow, otherwise than by rotary bowls, rotors or curved passages (jet mills B02C 19/06; cyclonic combustion chambers for gas turbines F02C; cyclonic combustion apparatus F23).

 B04C 1/00
Apparatus in which the main direction of flow follows a flat spiral
 B04C 3/00
Apparatus in which the axial direction of the vortex remains unchanged
 B04C 3/02
·  with heating or cooling, e.g. quenching, means
 B04C 3/04
·  Multiple arrangement thereof
 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
 B04C 5/02
·  Construction of inlets by which the vortex flow is generated (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; 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
 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
 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 groups B04C 1/00, B04C 3/00, and B04C 5/00; Combinations of apparatus covered by two or more of groups B04C 1/00, B04C 3/00, and B04C 5/00
 B04C 9/00
Combinations with other devices, e.g. fans (combinations with filters B01D 50/00)
 B04C 11/00
Accessories, e.g. safety or control devices, not otherwise provided for (with electrostatic precipitating arrangements B03C 3/14)