GB986823A - Liquid fuel combustion device for a heating, cooking or lighting appliance - Google Patents

Abstract

986,823. Vapour burners. AUSTRIA VEREINIGTE EMAILLIERWERKE, LAMPEN-UND METALLWARENFABRIKEN A.G. Jan. 2, 1962 [Jan. 2, 1961], No. 118/62. Heading F4T. In a heating apparatus a fuel chamber 10 is surrounded by a ring burner which is fed with vapour from the top of the chamber 10 via a vapour flow rate control device. In the embodiment of Fig. 1 the top of the fuel chamber 10 has a cap 11 perforated at 27 for the passage of fuel vapour and provided with inclined slots 12 engaging pins 13 on the inner wall of the fuel chamber. A cup-shaped member 18 of which the lower end is shaped to form the ring burner 19 fits freely on a rivet 14 of the cap 11 and together with the chamber 10 and a burner supporting plate 3 forms a passage supplying vapour to the burner. Tubes 6 on the plate 3 project through openings in the member 18 and supply air from openings 4 to the annular space between member 18 and a perforated inner burner cage 25 which at its upper end fits over a rib 21 on a plate 15 secured to the rivet 14 on the fuel chamber cap 11. A lever 26 on the cage 25 allows the latter and the cap 11 to be rotated causing, as a result of the inclined slots 12, a vertical movement of cap 11, member 18 and cage 25, thus varying the gap between member 18 and plate 3 to control the vapour supply to the burner. A ring-shaped wick 9 is provided for starting purposes in a trough in plate 3 and the burner is surrounded by a perforated cylinder 8. In another embodiment, Fig. 3 (not shown), a separate fuel container is connected to the bottom ofthe fuel chamber and a number of apertures of varying size are provided in the vaporizing chamber cap which may be rotated to bring them into line with an opening in the vaporizing chamber wall, thus varying the rate of fuel supply to the burner. In a further embodiment, Fig. 2 (not shown), a valve controlled opening at the top of the fuel chamber is connected by a pipe to the burner. In the embodiment of Fig. 4 a cupshaped insert 62 is provided in the fuel chamber 10 to give an annular fuel chamber fed with fuel from a reservoir 43 and a pipe 66 connects the fuel chamber with the reservoir above the fuel level to equalize the pressures therein. A pressure safety valve 65 is provided on the reservoir. A hollow valve 81 and shank 80 are movable by a cranked rod 83 to vary the rate of vapour flow through an upper opening 63 in the fuel chamber. Vapour mixes with air from a chamber 70 supplied with air through a pipe 71 and also with air passing through the hollow valve and shank, and the mixture passes to burner apertures 75.