CPC F22D11/02

Patent technology category CPC F22B37/00 is for "Component parts or details of steam boilers (venting devices F16K24/00; steam traps or like apparatus F16T)"

To do: clean up the category information below

Local category tree:

• F: MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
• 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)
• F22B: METHODS OF STEAM GENERATION; STEAM BOILERS (steam engine plants where engine aspects predominate F01K; domestic central-heating systems using steam F24D; heat exchange or heat transfer in general F28; generation of vapour in the cores of nuclear reactors G21)
• F22B37/00: Component parts or details of steam boilers (venting devices F16K24/00; steam traps or like apparatus F16T)

* F22B37/001:	. Steam generators built-up from pre-fabricated elements

• and more:

F:	MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING	  
 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)	  
  F22B:	METHODS OF STEAM GENERATION; STEAM BOILERS (steam engine plants where engine aspects predominate F01K; domestic central-heating systems using steam F24D; heat exchange or heat transfer in general F28; generation of vapour in the cores of nuclear reactors G21)	  
   F22B37/00:	Component parts or details of steam boilers (venting devices F16K24/00; steam traps or like apparatus F16T)	  
   F22B37/001:	. Steam generators built-up from pre-fabricated elements	  
   F22B37/002:	. specially adapted for nuclear steam generators, e.g. maintenance, repairing or inspecting equipment not otherwise provided for	  
   F22B37/003:	. . Maintenance, repairing or inspecting equipment positioned in or via the headers	  
   F22B37/005:	. . . Positioning apparatus specially adapted therefor (F22B37/64 takes precedence)	  
   F22B37/006:	. . Walking equipment, e.g. walking platforms suspended at the tube sheet (walking mechanism per seB62D57/02)	  
   F22B37/007:	. . Installation or removal of nuclear steam generators	  
   F22B37/008:	. Adaptations for flue gas purification in steam generators, (flue gas purification in general F23J; gas purification in general B01D)	  
   F22B37/02:	. applicable to more than one kind or type of steam boiler	  
   F22B37/025:	. . Devices and methods for diminishing corrosion, e.g. by preventing cooling beneath the dew point	  
   F22B37/04:	. . and characterised by material, e.g. use of special steel alloy	  
   F22B37/06:	. . Flue or fire tubes; Accessories therefor, e.g. fire-tube inserts	  
   F22B37/08:	. . . Fittings preventing burning-off of the tube edges

Relevant tree from espacenet:

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)
 F22D
PREHEATING, OR ACCUMULATING PREHEATED, FEED-WATER; FEED-WATER SUPPLY; CONTROLLING WATER LEVEL; AUXILIARY DEVICES FOR PROMOTING WATER CIRCULATION WITHIN BOILERS (chemical treatment of water, e.g. purification, C02F; enclosed heat-exchange apparatus in general F28D; controlling in general G05)
 F22D11/00
Feed-water supply not provided for in other main groups
 	F22D11/02		•	
Arrangements of feed-water pumps (F22D11/06 takes precedence; pumps per se F04)
 	F22D11/04		•	•	
with means to eliminate steam formation
 	F22D11/06		•	•	
for returning condensate to boiler

References

Enclosing categories	CPC F22B37/00
Subcategories	CPC F22B37/025, CPC F22B37/04, CPC F22B37/06
Keywords	Steam
Start year
End year