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PCE
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DIFF Subgroup
F23D 14/22

with separate air and gas feed ducts, e.g. with ducts running parallel or crossing each other

Introduced: January 1985

Full Title

Full titles differ between systems:

IPC:

Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid > Non-premix gas burners, i.e. in which gaseous fuel is mixed with combustion air on arrival at the combustion zone > with separate air and gas feed ducts, e.g. with ducts running parallel or crossing each other

CPC:

Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid > Non-premix gas burners, i.e. in which gaseous fuel is mixed with combustion air on arrival at the combustion zone (F23D14/38 takes precedence) > with separate air and gas feed ducts, e.g. with ducts running parallel or crossing each other

IPC and CPC are identically structured here. All 1 subcodes exist in both systems.

IPC defines codes here since 1985.

Child Classifications

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  • F23D 14/24 at least one of the fluids being submitted to a swirling motion since 1985 IPC+CPC Available in IPC and CPC