Relating to gaseous fuel burner assemblies and to appliances incorporating such burner assemblies
First Claim
1. A gaseous fuel burner assembly for heating a space defined in part by walls extending transversely from an end wall;
- comprising a baffle supported within said space to permit airflow at its periphery between said baffle and said transversely extending wails;
said baffle having at least one aperture therein;
a gaseous fuel burner including a burner head supported between said end wall and said baffle to confront a central area of the baffle, a motor having a rotor shaft drivably coupled with said burner head;
said rotor shaft providing a gaseous fuel supply conduit communicating with said burner head; and
fan blades located around the burner head and coupled with said rotor shaft for rotation to withdraw air from the space to be heated via said at least one aperture in the baffle and to return that air between the periphery of the baffle and said transversely extending walls to the space to be heated.
6 Assignments
0 Petitions
Accused Products
Abstract
A gaseous fuel burner assembly for heating a space particularly an oven of a domestic cooking appliance comprises a gaseous fuel burner separated from the space by a baffle plate, and, also separated from the space by the baffle plate, a fan for withdrawing air from the space via an aperture or apertures in the plate and returning that air to the space via an exit or exits adjacent the edge of the plate, the or each aperture being so located that, during its passage from the aperture or apertures to the exit or exits, the air passes close to the burner. The fan may also draw in air from a plenum chamber behind the oven. The burner may be of the duplex variety and may have two independently controllable burner heads.
26 Citations
27 Claims
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1. A gaseous fuel burner assembly for heating a space defined in part by walls extending transversely from an end wall;
- comprising a baffle supported within said space to permit airflow at its periphery between said baffle and said transversely extending wails;
said baffle having at least one aperture therein;
a gaseous fuel burner including a burner head supported between said end wall and said baffle to confront a central area of the baffle, a motor having a rotor shaft drivably coupled with said burner head;
said rotor shaft providing a gaseous fuel supply conduit communicating with said burner head; and
fan blades located around the burner head and coupled with said rotor shaft for rotation to withdraw air from the space to be heated via said at least one aperture in the baffle and to return that air between the periphery of the baffle and said transversely extending walls to the space to be heated. - View Dependent Claims (2, 3, 4, 5)
- comprising a baffle supported within said space to permit airflow at its periphery between said baffle and said transversely extending wails;
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6. A gaseous fuel burner for heating a space defined in part by walls extending transversely from a back wall;
- comprising a baffle positioned within said space to provide airflow space between the baffle and said back wall and between the periphery of the baffle and said transversely extending walls;
said baffle having at least one aperture therein;
a gaseous fuel burner including a burner head supported between the baffle and said back wall, said burner located centrally of the baffle;
a fuel supply conduit communicating with said burner head;
a motor having a rotor shaft, said burner head mounted on the rotor shaft for rotation therewith, said rotor shaft passing through the fuel supply conduit;
fan blades located around and fixed to said burner head to rotate therewith for withdrawing air from the space to be heated via said at least one aperture in the baffle to said airflow space between the baffle and said back wall and returning that air through said airflow space at the periphery of the baffle to the space to be heated. - View Dependent Claims (7, 8)
- comprising a baffle positioned within said space to provide airflow space between the baffle and said back wall and between the periphery of the baffle and said transversely extending walls;
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9. A gaseous fuel burner assembly for heating a space defined in part by walls extending transversely from an end wall;
- a baffle positioned within said space to permit air flow path at its periphery between said baffle and said transversely extending walls;
said baffle having at least one aperture therein;
a gaseous fuel burner having a burner head located in a region between the baffle and said end wall, said burner head positioned centrally of the baffle and, also positioned in said region between the baffle and said end wall, fan blades located around the burner head, said fan blades coupled to a motor for rotation to withdraw air from the space to be heated via the at least one aperture in the baffle into said region between the baffle and said end wall and returning that air between the periphery of the baffle and said transversely extending walls to the space to be heated. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16, 17, 19)
- a baffle positioned within said space to permit air flow path at its periphery between said baffle and said transversely extending walls;
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18. An assembly as claimed in 17 in which the baffle has a floor, and said plurality of apertures is arranged in several concentric circles in said floor.
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20. A method of heating a space defined in part by walls extending transversely from an end wall, said space having a baffle located therein spaced from said end wall;
- comprising the steps of heating the baffle by a heating source located centrally of the baffle in a region between the baffle and said end wall;
inducing a forced airflow from said space to be heated into said region between said baffle and said end wall through a region of the heated baffle located outwardly of said heating source, said airflow returning around peripheral edges of said baffle to said space to be heated. - View Dependent Claims (21, 22, 23)
- comprising the steps of heating the baffle by a heating source located centrally of the baffle in a region between the baffle and said end wall;
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24. A cooking appliance having walls extending transversely from a back wall to bound part of a cavity providing a cooking space;
- a gaseous fuel burner supporting a burner head located in said cavity;
fan blades positioned around said burner head;
a baffle positioned within said cavity and spaced from said back wall to separate said burner head and said fan blades from said cooking space;
said baffle providing air flow space at its periphery between said baffle and said transversely extending walls;
said baffle having at least one aperture extending through the baffle;
said burner head located centrally of and facing the baffle; and
wherein said fan blades are coupled to a motor for rotation to withdraw air from the cooking space via said at least one aperture in the baffle, and to return said withdrawn air back to said cooking space. - View Dependent Claims (25, 26, 27)
- a gaseous fuel burner supporting a burner head located in said cavity;
Specification