Cooperative Patent Classification


Version: 2017.02
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}) [2013-01]
NOTE

  • This subclass covers 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.
B04C 1/00
Apparatus in which the main direction of flow follows a flat spiral; {so-called flat cyclones or vortex chambers} [2013-01]
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)} [2013-01]
B04C 2003/003
.
{Shapes or dimensions of vortex chambers} [2013-01]
B04C 2003/006
.
{Construction of elements by which the vortex flow is generated or degenerated} [2013-01]
B04C 3/02
.
with heating or cooling, e.g. quenching, means [2013-01]
B04C 3/04
.
Multiple arrangement thereof {(combined with types according to other groups, B04C 7/00)} [2013-01]
B04C 3/06
.
Construction of inlets or outlets to the vortex chamber [2013-01]
B04C 5/00
Apparatus in which the axial direction of the vortex is reversed {(combined with other devices B04C 9/00)} [2013-01]
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) [2016-08]
B04C 5/04
. .
Tangential inlets [2013-01]
B04C 5/06
. .
Axial inlets [2013-01]
B04C 5/08
.
Vortex chamber constructions [2013-01]
B04C 5/081
. .
Shapes or dimensions [2013-01]
B04C 5/085
. .
with wear-resisting arrangements [2013-01]
B04C 5/087
. .
with flexible gas-tight walls [2013-01]
B04C 5/10
. .
with perforated walls [2013-01]
B04C 5/103
. .
Bodies or members, e.g. bulkheads, guides, in the vortex chamber (cores B04C 5/107) [2013-01]
B04C 5/107
. .
Cores; Devices for inducing an air-core in hydrocyclones (forming part of the outlet pipe B04C 5/13) [2013-01]
B04C 5/12
.
Construction of the overflow ducting, e.g. diffusing or spiral exits [2013-01]
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 [2013-01]
B04C 2005/133
. . .
{Adjustable vortex finder} [2013-01]
B04C 2005/136
. . .
{Baffles in the vortex finder} [2013-01]
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)} [2013-01]
B04C 5/15
. .
with swinging flaps or revolving sluices; Sluices; Check-valves [2013-01]
B04C 5/16
. .
with variable-size outlets from the underflow ducting [2013-01]
B04C 5/18
. .
with auxiliary fluid assisting discharge [2013-01]
B04C 5/181
. .
Bulkheads or central bodies in the discharge opening [2013-01]
B04C 5/185
. .
Dust collectors [2013-01]
B04C 5/187
. . .
forming an integral part of the vortex chamber [2013-01]
B04C 5/20
.
with heating or cooling, e.g. quenching, means [2013-01]
B04C 5/22
.
with cleaning means [2013-01]
B04C 5/23
. .
using liquids [2013-01]
B04C 5/24
.
Multiple arrangement thereof {(combination types according to other /00 groups, B04C 7/00)} [2013-01]
B04C 5/26
. .
for series flow [2013-01]
B04C 5/28
. .
for parallel flow [2013-01]
B04C 5/30
. .
Recirculation constructions in or with cyclones which accomplish a partial recirculation of the medium, e.g. by means of conduits [2013-01]
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 [2013-01]
B04C 9/00
Combinations with other devices, e.g. fans, {expansion chambers, diffusors, water locks }(with filters B01D 50/00) [2013-01]
B04C 2009/001
.
{with means for electrostatic separation} [2013-01]
B04C 2009/002
.
{with external filters} [2013-01]
B04C 2009/004
.
{with internal filters, in the cyclone chamber or in the vortex finder} [2013-01]
B04C 2009/005
.
{with external rotors, e.g. impeller, ventilator, fan, blower, pump} [2013-01]
B04C 2009/007
.
{with internal rotors, e.g. impeller, ventilator, fan, blower, pump} [2013-01]
B04C 2009/008
.
{with injection or suction of gas or liquid into the cyclone} [2013-01]
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) [2016-08]