(0)F28C:0/0:
IPC6
SECTION F - MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS;BLASTING
HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER...
F28C
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F 28 C

 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 F 16 P; fluid heaters having heat generating means F 24 H; with an intermediate heat-transfer medium coming into direct contact with heat-exchange media F 28 D 15/00 to F 28 D 19/00; details of heat-exchange apparatus of general application F 28 F)

 

 

 
 

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/ 00 Direct-contact trickle coolers, e.g. cooling towers (building construction E 04 H 5/12; enclosed spaces cooled by trickle F 25; component parts of trickle coolers F 28 F 25/00)

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/ 02 • with counter-current only  

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/ 04 • with cross-current only  

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/ 06 • with both counter-current and cross-current  

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/ 08 • Arrangements for recovering heat from exhaust steam  

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/ 10 • Arrangements for suppressing noise [5]  

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/ 12 • Arrangements for preventing clogging by frost [3]  

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/ 14 • comprising also a non-direct contact heat exchange [3]  

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/ 16 • Arrangements for preventing condensation, precipitation or mist formation, outside the cooler (F 28 C 1/14 takes precedence) [3]  
 

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/ 00 Other direct-contact heat-exchange apparatus

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/ 02 • the heat-exchange media both being gases or vapours  

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/ 04 • the heat-exchange media both being liquids  

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/ 06 • the heat-exchange media being a liquid and a gas or vapour (temperators for cooling steam F 22)  

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/ 08 • • with change of state, e.g. absorption, evaporation, condensation (generating steam under pressure F 22)  

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/ 10 • one heat-exchange medium at least being a fluent solid, e.g. a particulate material  

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/ 12 • • the heat-exchange medium being a particulate material and a gas, vapour, or liquid  

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/ 14 • • • the particulate material moving by gravity, e.g. down a tube  

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/ 16 • • • the particulate material forming a bed, e.g. fluidised, on vibratory sieves  

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/ 18 • • • the particulate material being contained in rotating drums