Burner with tangential gas inlet

#1. Field of the Invention

#The present invention relates to burners with a tangential gas. More particularly, although not exclusively, the invention relates to a circular or toroidal burner for use in a heating appliance, such as, but not limited to patio heaters.

#2. State of the Art

#Preferred forms of the present invention will now be described by way of example with reference to the accompanying drawings, wherein:

#FIG. 1 is a schematic plan view of a gas burner,

#FIG. 2 is a schematic cross-sectional elevation of a gas distribution channel,

#In FIGS. 1 to 4 of the accompanying drawings there is schematically depicted a circular or toroidal burner 10. The burner 10 might typically be formed as a steel pressing, but might alternatively be cast or otherwise fabricated. The burner 10 includes a circular gas distribution channel 21. Channel 21 is of annular or toroidal form.

#The burner 10 includes a mixing tube 14 via which gas enters venturi or constriction 13 via which gas is accelerated after having been injected by an injector 12.

#Gas is delivered to the injector 12 via an inlet 11. A gas-delivery line extending say from a control valve would be attached to the inlet 11. The gas delivery line might extend straight from the inlet 11 to the control valve as a continuous straight tangent. As one could imagine, this would significantly reduce the footprint of the appliance within which the burner is incorporated, as compared to the situation where the mixing tube extends radially from an edge of the burner 10.