RANGES &
& R
RANGETOPS
Theory of Operation
2-4
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.
Gas Orifice
Venturi Tube
Air Shutter
Burner Base
Mixing Tube
Burner Ports
Burner Ring
Burner Body
Figure 2-1. Cut-away View of Open Surface Burner Components
Содержание RT362F
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