Burner Components - Wolf Ranges Technical & Service Manual

Theory of Operation
RANGES & & R R ANGETOPS

Burner Components:

Gas Orifice - An opening or hole which regulates or limits the amount of gas flowing to a burner. Gas flow rate (vol-
ume) depends on the size of the orifice (hole) and the gas pressure at the inlet of the orifice.
Air Shutter - This is used to adjust the size of the primary air inlet area and therefore controls primary air flow.
Venturi Tube (Open Surface Burner & French Top Only) - A section of pipe at the inlet of the burner body that nar-
rows and then flares out again. This tube helps maintain a proper and constant primary air injection.
Mixing Tube/Throat - Serves to carry the gas/air mixture from the venturi tube to the burner body.
Burner Body - The accumulation chamber below the burner base which allows the gas and air to mix together fully.
Burner Base/Cross Over Ring - The component below the burner ring which carries the gas/air mixture to the
burner ring.
Burner Ring/Burner Head - The component containing the burner ports where the gas/air mixture ignites. The
burner ports are distributed in a useful pattern to optimize heat transfer. The flames should be spread so they can
be easily reached by secondary air and provide a stable blue flame.
Burner Ring
Burner Ports
Venturi Tube
Burner Base
Gas Orifice Mixing Tube Burner Body Air Shutter
Figure 2-1. Cut-away View of Open Surface Burner Components
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