Decorative effect gas fires
Gas supply means 10 for a decorative effect gas fire 12 comprise a Venturi 14 to aerate a gas supply 16 with primary air 18, and are adapted to combine, with the gas supply 16 aerated by the Venturi 14, being aerated gas 20, neat or less aerated gas 22. The gas supply means 10 comprises by-pass mean...
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Sprache: | eng |
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Zusammenfassung: | Gas supply means 10 for a decorative effect gas fire 12 comprise a Venturi 14 to aerate a gas supply 16 with primary air 18, and are adapted to combine, with the gas supply 16 aerated by the Venturi 14, being aerated gas 20, neat or less aerated gas 22. The gas supply means 10 comprises by-pass means 40 (Figure 2) adapted to cause said neat or less aerated gas 22 to be tapped at junction 44, to by-pass at least part 42 of the Venturi 14, and to enter the Venturi 14 at a region (inlet 23) where it can combine with gas 20 aerated by the Venturi 14. The by-pass means 40 comprise control means 52, 54 for controlling the gas flow through pipe 50 to inlet 23. The control means 52, 54 comprise a user-operable tap 54 (to choose yellow or colourless flames, and with a hinged cover to avoid confusion with the main gas control 48) and/or a plug 52 inserted in the pipe 50 and having a hole 56 through the plug 52 to pass and control said gas flow. The manufacturer can provide different plugs 52 with respective hole sizes. The Venturi 14 has a curved elbow 60 just prior to its outlet 58, and the combination of gas 22 with aerated gas 20 occurs just prior to said elbow 60. The gas supply means 10 may comprise a Venturi 114 adapted to bolt onto a burner pan 126 to be attached thereto, to supply gas thereto. |
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