1. CPC Sections
  2. CPC Section F
  3. CPC Class F28
  4. CPC Subclass F28C
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Version: 2024.08
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CPC
COOPERATIVE PATENT CLASSIFICATION
​
F28C
HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA COME INTO DIRECT CONTACT WITHOUT CHEMICAL INTERACTION (safety devices in general F16P; fluid heaters having heat generating means F24H; with an intermediate heat-transfer medium coming into direct contact with heat-exchange media F28D 15/00 - F28D 19/00; details of heat-exchange apparatus of general application F28F) [2018-08]
WARNING

  • In this subclass non-limiting references (in the sense of paragraph 39 of the Guide to the IPC) may still be displayed in the scheme.
F28C 1/00
Direct-contact trickle coolers, e.g. cooling towers (building construction E04H 5/12; enclosed spaces cooled by trickle F25; components parts of trickle coolers F28F 25/00; {indirect-contact cooling towers F28B 1/06}) [2013-01]
F28C 1/003
.
{comprising outlet ducts for exhaust gases} [2013-01]
F28C 2001/006
.
{Systems comprising cooling towers, e.g. for recooling a cooling medium} [2024-08]
F28C 1/02
.
with counter-current only [2013-01]
F28C 1/04
.
with cross-current only [2013-01]
F28C 1/06
.
with both counter-current and cross-current [2013-01]
F28C 1/08
.
Arrangements for recovering heat from exhaust steam [2013-01]
F28C 1/10
.
Arrangements for suppressing noise [2013-01]
F28C 1/12
.
Arrangements for preventing clogging by frost [2013-01]
F28C 1/14
.
comprising also a non-direct contact heat exchange [2013-01]
F28C 2001/145
. .
{with arrangements of adjacent wet and dry passages} [2013-01]
F28C 1/16
.
Arrangements for preventing condensation, precipitation or mist formation, outside the cooler (F28C 1/14 takes precedence) [2013-01]
F28C 3/00
Other direct-contact heat-exchange apparatus [2013-01]
F28C 3/005
.
{one heat-exchange medium being a solid (F28C 3/10 takes precedence)} [2013-01]
F28C 3/02
.
the heat-exchange media both being gases or vapours [2013-01]
F28C 3/04
.
the heat-exchange media both being liquids [2013-01]
F28C 3/06
.
the heat-exchange media being a liquid and a gas or vapour (temperators for cooling steam F22) [2013-01]
F28C 3/08
. .
with change of state, e.g. absorption, evaporation, condensation (generating steam under pressure F22) [2013-01]
F28C 3/10
.
one heat-exchange medium at least being a fluent solid, e.g. a particulate material [2013-01]
F28C 3/12
. .
the heat-exchange medium being a particulate material and a gas, vapour, or liquid [2013-01]
F28C 3/14
. . .
the particulate material moving by gravity, e.g. down a tube [2013-01]
F28C 3/16
. . .
the particulate material forming a bed, e.g. fluidised, on vibratory sieves [2013-01]
F28C 3/18
. . .
the particulate material being contained in rotating drums [2013-01]