F
SECTION F — MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
 F01 - 
F04
Subsection index
MACHINES
positive displacement
rotary or oscillating piston
liquid and elastic fluid or elastic fluidF01C
liquid onlyF04C
reciprocating piston or other
liquid and elastic fluid or elastic fluidF01B
liquid onlyF04B
non-positive displacement
liquid and elastic fluid or elastic fluidF01D
liquid onlyF03B
ENGINES
positive displacement
rotary or oscillating piston
liquid and elastic fluid or elastic fluidF01C
liquid onlyF03C
reciprocating piston or other
liquid and elastic fluid or elastic fluidF01B
liquid onlyF03C
non-positive displacement
liquid and elastic fluid or elastic fluidF01D
liquid onlyF03B
PUMPS
positive displacement
rotary or oscillating pistonF04C
reciprocating piston or otherF04B
non-positive displacementF04D
  
LIGHTING; HEATING
 F22
STEAM GENERATION (chemical or physical apparatus for generating gases B01J; chemical generation of gas, e.g. under pressure, Section C; removal of combustion products or residues, e.g. cleaning of the combustion contaminated surfaces of tubes of boilers, F23J; generating combustion products of high pressure or high velocity F23R; water heaters not for steam generation F24H, F28; cleaning of internal or external surfaces of heat-transfer conduits, e.g. water tubes of boilers, F28G)
 F22

Note(s)

In this class, the following term is used with the meaning indicated:

  • "steam" covers also other condensable vapours, e.g. mercury, diphenyl, diphenyl oxide.

 F22G
SUPERHEATING OF STEAM (steam-separating arrangements in boilers F22B 37/26)
P:10 F22G 1/00
Steam superheating characterised by heating method (exothermal chemical reactions not involving a supply of free oxygen gas, apparatus or devices for using the heat therefrom F24J)
 F22G 1/02
·  with heat supply by hot flue gases from the furnace of the steam boiler
 F22G 1/04
·  ·  by diverting flow or hot flue gases to separate superheaters operating in reheating cycle, e.g. for reheating steam between a high-pressure turbine stage and an intermediate turbine stage
 F22G 1/06
·  with heat supply predominantly by radiation
 F22G 1/08
·  ·  from heated brickwork or the like
 F22G 1/10
·  with provision for superheating by throttling
 F22G 1/12
·  by mixing steam with furnace gases or other combustion products
 F22G 1/14
·  using heat generated by chemical reactions
 F22G 1/16
·  by using a separate heat source independent from heat supply of the steam boiler, e.g. by electricity, by auxiliary combustion of fuel oil
P:30 F22G 3/00
Steam superheaters characterised by constructional features; Details or component parts thereof (general aspects of enclosed heat-exchangers F28D)
P:0 F22G 5/00
Controlling superheat temperature (control systems for steam boilers F22B; regulating or controlling in general G05)
 F22G 5/02
·  Applications of combustion-control devices, e.g. tangential-firing burners, tilting burners
 F22G 5/04
·  by regulating flue gas flow, e.g. by proportioning or diverting
 F22G 5/06
·  by recirculating flue gases
 F22G 5/08
·  ·  preventing furnace gas backflow through recirculating fan
 F22G 5/10
·  by displacing superheater sections
 F22G 5/12
·  by attemperating the superheated steam, e.g. by injected water sprays (spray-mixers B01F 5/18)
 F22G 5/14
·  ·  by live steam
 F22G 5/16
·  by indirectly cooling or heating the superheated steam in auxiliary enclosed heat-exchanger
 F22G 5/18
·  by by-passing steam around superheater sections
 F22G 5/20
·  by combined controlling procedures
P:20 F22G 7/00
Steam superheaters characterised by location, arrangement, or disposition
 F22G 7/02
·  in fire tubes
 F22G 7/04
·  in jackets around fire tubes
 F22G 7/06
·  in furnace tubes
 F22G 7/08
·  in fire-boxes
 F22G 7/10
·  in smoke-boxes
 F22G 7/12
·  in flues
 F22G 7/14
·  in water-tube boilers, e.g. between banks of water tubes