CPC Definition - Subclass B04C
This place covers:
Apparatus for separating or like treating (e.g. drying, extracting, purifying) in which centrifugal or centripetal effects are generated by free vortex flow, otherwise than by rotary bowls, rotors or curved passages. The free vortex flow generated may follow a flat spiral, have an unchanged or constant axial direction, or have a reversible axial direction.
The mixtures treated are composed of the following physical states of matter:
- Liquid/liquid, liquid/gas or gas/gas mixtures.
- Solid/liquid or solid/gas mixtures; orcombinations of such apparatus with other devices, e.g. fans.
Accessories for such devices e.g. safety or control devices.
This place does not cover:
Combinations of cyclones with filters, for separating particles from gases or vapours | |
Combinations of cyclones with electrostatic precipitating arrangements | |
Cyclonic type combustion apparatus using fluent fuel | |
Vortex burners e.g. for cyclone-type combustion apparatus |
Attention is drawn to the following places, which may be of interest for search:
Arrangement or disposition of cyclones or other devices with centrifugal action, in suction cleaners | |
Separation of non-miscible liquids by centrifugal force | |
Degasification of liquids in which centrifugal movement is caused by a vortex, e.g. using a cyclone, or by a tangential inlet | |
Separating dispersed particles from gases or vapours by centrifugal forces | |
Separating dispersed particles from gases or vapours by centrifugal forces generated by the winding course of the gas stream | |
Separation of isotopes of the same chemical element by centrifuging | |
Chemical or physical processes in general, conducted in the presence of fluids and solid particles; separating solid material from the gas/liquid stream using cyclones | |
Jet mills | |
Magnetic or electrostatic separators of solid materials or fluids; Separation by high-voltage electric fields | |
Centrifuges | |
Selective separation of solid materials carried by or dispersed in gas currents, using centrifugal force | |
Catalytic cracking with preheated moving solid catalysts according to the "fluidised-bed" technique | |
Purification of the pulp suspension by mechanical means with the aid of centrifugal force in cyclones | |
Mounting or connecting of lubricant purifying means relative to a machine or engine | |
Crankcase ventilating or breathing having means for purifying air before leaving crankcase, e.g. removing oil | |
Exhaust or silencing apparatus for machines or engines having means for removing solid constituents of exhaust, using inertial or centrifugal separators, e.g. of cyclone type | |
Fluid dynamics in general | |
Component parts or details of steam boilers; steam-separating arrangements using centrifugal force | |
Arrangement of devices for treating smoke or fumes of purifiers for removing solid particulate material from the gasflow using cyclone separators | |
Compression machines, plant or systems using vortex effect | |
Fluidised-bed furnaces; cyclones or chain of cyclones | |
Investigating or analysing materials by determining their physical or chemical properties, e.g. while the centrifugal or centripetal effects generated by a vortex flow are acting on the sample |
In this place, the following terms or expressions are used with the meaning indicated:
Vortex finder | overflow duct, which is the discharging outlet for the lighter fluid phase. |
This place covers:
Flat cyclones or vortex chambers and cyclones where the inlet extends substantially over the whole height of the vortex chamber.
This place does not cover:
Arrangements with curved passages |
This place covers:
Cyclones where the direction of flow does not change, the fluid enters the cyclone on an upstream side and the separated phases are discharged on the downstream side.
This place covers:
Cyclones where the axial direction of the lighter fluid is reversed. The direction of flow does change, the fluid enters the cyclone on an upstream side and the separated heavier fluid is discharged on the downstream side, the lighter fluid travels back to the upstream side of the cyclone.
This place covers:
All cases where the combination of different types of cyclones like a through flow type cyclone (B04C 3/00 and sub-groups) and a reverse flow type cyclone (B04C 5/00 and sub-groups) is claimed. Details relating to the one or the other type are classified in the relevant groups of the specific cyclone.
This place covers:
Combinations of cyclones with expansion chambers, diffusors, water locks or sieves.
Combinations of cyclones with internally or externally arranged rotors like fans, ventilators, blowers, impellers, pumps.
Combinations of cyclones with internally or externally arranged filters.
Combinations of cyclones with electrostatic separation equipment.
Cyclones with injection or suction of liquid or gas into the cyclone chamber.
This place covers:
Control arrangements per se, regulators, valves in inlet and/or overflow ducting.