(0)F02C:0/2:
IPC6
SECTION F - MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS;BLASTING
GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS;...
F02C
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F 02 C

 GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS (construction of turbines F 01 D; jet-propulsion plants F 02 K; construction of compressors or fans F 04; gas-turbine combustion chambers F 23 R; using gas turbines in compression refrigeration plants F 25 B 11/00; using gas-turbine plants in vehicles, see the relevant vehicle classes)
 

Notes

(1)

 This subclass covers:
 

-

 combustion product or hot gas turbine plants;
 

-

 internal combustion turbines or turbine plants;
 

-

 turbine plants in which the working fluid is an unheated, pressurised gas.

(2)

 This subclass does not cover:
 

-

 steam turbine plants, which are covered by subclass F 01 K;
 

-

 special vapour plants, which are covered by subclass F 01 K.

(3)

 In this subclass, the following expression is used with the meaning indicated:
 

-

 "gas-turbine plants" covers all the subject matter of Note (1) above and covers also features of jet-propulsion plants common to gas-turbine plants.

(4)

 Attention is drawn to the Notes preceding class F 01.

 

 

 
 

 1
/ 00 Gas-turbine plants characterised by the use of hot gases or unheated pressurised gases, as the working fluid (by the use of combustion products F 02 C 3/00, F 02 C 5/00) [3]

1
/ 02 • the working fluid being an unheated pressurised gas [3]  

1
/ 04 • the working fluid being heated indirectly [3]  

1
/ 05 • • characterised by the type or source of heat, e.g. using nuclear or solar energy [3]  

1
/ 06 • • • using reheated exhaust gas (F 02 C 1/08 takes precedence) [3]  

1
/ 08 • • Semi-closed cycles [3]  

1
/ 10 • • Closed cycles [3]  
 

 3
/ 00 Gas-turbine plants characterised by the use of combustion products as the working fluid (generated by intermittent combustion F 02 C 5/00)

3
/ 02 • using exhaust-gas pressure in a pressure exchanger to compress combustion-air (pressure exchangers per se F 04 F 11/02)  

3
/ 04 • having a turbine driving a compressor (power transmission arrangements F 02 C 7/36; control of working fluid flow F 02 C 9/16) [5]  

3
/ 045 • • having compressor and turbine passages in a single rotor (F 02 C 3/073 takes precedence) [3]  

3
/ 05 • • • the compressor and the turbine being of the radial flow type [3]  

3
/ 055 • • the compressor being of the positive-displacement type [3]  

3
/ 06 • • the compressor comprising only axial stages (F 02 C 3/10 takes precedence) [3]  

3
/ 067 • • • having counter-rotating rotors (F 02 C 3/073 takes precedence) [3]  

3
/ 073 • • • the compressor and turbine stages being concentric [3]  

3
/ 08 • • the compressor comprising at least one radial stage (F 02 C 3/10 takes precedence) [3]  

3
/ 09 • • • of the centripetal type [3]  

3
/ 10 • • with another turbine driving an output shaft but not driving the compressor  

3
/ 107 • • with two or more rotors connected by power transmission [5]  

3
/ 113 • • • with variable power transmission between rotors [5]  

3
/ 13 • • having variable working fluid interconnections between turbines or compressors or stages of different rotors [5]  

3
/ 14 • characterised by the arrangement of the combustion chamber in the plant (combustion chambers per se F 23 R) [3]  

3
/ 16 • • the combustion chambers being formed at least partly in the turbine rotor  

3
/ 20 • using a special fuel, oxidant, or dilution fluid to generate the combustion products [3]  

3
/ 22 • • the fuel or oxidant being gaseous at standard temperature and pressure (F 02 C 3/28 takes precedence) [3]  

3
/ 24 • • the fuel or oxidant being liquid at standard temperature and pressure [3]  

3
/ 26 • • the fuel or oxidant being solid or pulverulent, e.g. in slurry or suspension  

3
/ 28 • • • using a separate gas producer for gasifying the fuel before combustion [3]  

3
/ 30 • • Adding water, steam or other fluids to the combustible ingredients or to the working fluid before discharge from the turbine (heating of air intakes to prevent icing F 02 C 7/047) [3]  

3
/ 32 • Inducing air flow by fluid jet, e.g. ejector action [3]  

3
/ 34 • with recycling of part of the working fluid, i.e. semi-closed cycles with combustion products in the closed part of the cycle [3]  

3
/ 36 • Open cycles [3]  
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