1. A cooking range burner arrangement, comprising:
an annular burner head with a plurality of gas orifices, the burner head including a centrally disposed opening defining a first flow path for flowing secondary air upward into a combustion space proximate the burner head;
a bowl arrangement associated with the burner head, the bowl arrangement defining a second flow path and a third flow path, the second flow path located for flowing secondary air to the combustion space above the secondary flow provided by the first flow path, the third flow path located for flowing secondary air into the combustion space above the secondary flow provided by the second flow path.
2. The cooking range burner arrangement of claim 1, wherein the second flow path is radially outward of the first flow path, the third flow path is radially outward of the second flow path.
3. The cooking range burner arrangement of claim 2 wherein the second flow path feeds secondary air to a cone andor mantle flame region and the third flow path feeds secondary air to a tail flame region.
4. The cooking range burner arrangement of claim 2, wherein:
the bowl arrangement comprises:
an inner bowl structure disposed to define the first air flow path between an upper portion of the burner head and a lower portion of the inner bowl structure;
an outer bowl structure disposed at least partially about the inner bowl structure to define the second air flow path at least partially between the inner bowl structure and the outer bowl structure.
5. The cooking range burner arrangement of claim 4, wherein:
the inner bowl structure has a bottom edge aligned with and positioned above a top surface of the burner head, a wall of the inner bowl structure extends upwardly and radially outwardly;
the outer bowl structure has a bottom edge positioned higher than the bottom edge of the inner bowl structure and lower than a top edge of the inner bowl structure, a wall of the outer bowl structure extends upwardly and outwardly, and a top edge of the outer bowl structure is positioned higher than the top edge of the inner bowl structure.
6. The cooking range burner arrangement of claim 5, wherein the first bowl structure and second bowl structure act as heat reflectors to reduce radially outward heat loss.
7. The cooking range burner arrangement of claim 4, further comprising:
a plate positioned above the second bowl structure for being heated by combustion in the combustion space, the plate including a plurality of heat exchange fin structures extending downward toward the combustion space.
8. The cooking range burner arrangement of claim 7 wherein a multiplicity of the heat exchange fin structures are arranged to extend radially relative to a central vertical axis of the burner head.
9. The cooking range burner arrangement of claim 8 wherein radially inward edges of the multiplicity of heat exchange fin structures are spaced outward of the central vertical axis, a center region of the bottom side of the plate lacking any heat exchange fin structure.
10. The cooking range burner arrangement of claim 9 wherein the multiplicity of heat exchange fin structures includes a first set of heat exchange fin structures with radially inward edges terminating a first distance from the central vertical axis and a second set of heat exchange fin structures with radially inward edges terminating a second distance from the central vertical axis, the second distance greater than the first distance.
11. The cooking range burner arrangement of claim 10 wherein a radial length of each heat exchange fin structure of the second set of heat exchange fin structures is substantially less than a radial length of each heat exchange fin of the first set of heat exchange fin structures.
12. The cooking range burner arrangement of claim 7 wherein:
the inner bowl structure has a bottom edge aligned with and positioned above a top surface of the burner head, a wall of the inner bowl structure extends upwardly and radially outwardly;
the outer bowl structure has a bottom edge positioned higher than the bottom edge of the inner bowl structure and lower than a top edge of the inner bowl structure, a wall of the outer bowl structure extends upwardly and outwardly, and a top edge of the outer bowl structure is positioned higher than the top edge of the inner bowl structure, the top edge of the outer bowl structure positioned adjacent lower edges of the heat exchange fin structures.
13. A cooking range burner arrangement, comprising:
an annular burner head with a plurality of gas orifices, the burner head including a centrally disposed opening defining a first flow path for flowing secondary air upward into a combustion space proximate the burner head;
a secondary air flow metering arrangement associated with the burner head, the secondary air flow metering arrangement defining a second flow path and a third flow path, the second flow path located for flowing secondary air to the combustion space above the secondary flow provided by the first flow path, the third flow path located for flowing secondary air to the combustion space above the secondary flow provided by the second flow path.
14. The cooking range burner arrangement of claim 13, wherein the second flow path is radially outward of the first flow path, the third flow path is radially outward of the second flow path.
15. The cooking range burner arrangement of claim 14 wherein the second flow path feeds secondary air to a cone andor mantle flame region and the third flow path feeds secondary air to a tail flame region.
16. The cooking range burner arrangement of claim 15, wherein:
the secondary air flow metering arrangement comprises:
an inner bowl structure disposed to define the first air flow path between an upper portion of the burner head and a lower portion of the inner bowl structure;
an outer bowl structure disposed at least partially about the inner bowl structure to define the second air flow path at least partially between the inner bowl structure and the outer bowl structure.
17. A kit for updating an open-top gas burner including a burner head, the kit comprising:
an inner bowl structure for positioning above the burner head;
an outer bowl structure disposed at least partially about the inner bowl structure to define an air flow path at least partially between the inner bowl structure and the outer bowl structure; and
a plate member for positioning above the inner and outer bowl structure.
18. The kit of claim 17 further comprising a support unit for supporting the plate member and the bowls above the burner head.
19. The kit of claim 17 wherein the plate member includes a plurality of radially extending heat exchange fins on its lower surface.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1. An electrode comprising:
(i) a conducting substrate for detecting an electroactive agent;
(ii) a catalytic agent held on the substrate for converting a non-electroactive agent to an electroactive agent by a catalytic process which consumes oxygen; and
(iii) an oxygen reservoir, for releasing oxygen to feed the catalytic process, held within a polymer matrix on the substrate.
2. An electrode according to claim 1 wherein the conducting substrate comprises a non-metallic conductor such as carbon fibres or metallic conductors including those constructed of noble metals such as Pt, Ag, Au, Ru, Rh, Pd, Re, Os, Ir and combinations thereof.
3. (canceled)
4. (canceled)
5. An electrode according to claim 1 wherein the catalytic agent is selected from oxidase materials.
6. An electrode according to claim 3 wherein the catalytic agent is selected from glucose oxidase, lactate oxidase and glutamate oxidase and combinations thereof.
7. An electrode according to claim 1 wherein the oxygen reservoir comprises at least one halogenated polymer such as fluorinated or chlorinated polymers for example, perfluoro, perchloro and perfluorochloro polymers.
8. An electrode according to claim 1 wherein the oxygen reservoir comprises at least one halogenated polymer such as fluorinated or chlorinated polymers for example, perfluoro, perchloro and perfluorochloro polymers.
9. (canceled)
10. (canceled)
11. (canceled)
12. An electrode according to claim 1 wherein the polymer matrix is applied by a non-electrochemical method of application.
13. (canceled)
14. An electrode according to claim 1 wherein the oxygen reservoir is incorporated into the same matrix as the catalytic agent.
15. An electrode according to claim 1 further comprising a cross-linking agent for more securely binding the catalytic agent into the polymer matrix or further comprising a stabiliser for the catalytic agent.
16. (canceled)
17. A method of constructing an electrode comprising:
(i) providing a conducting substrate for detecting an electroactive agent;
(ii) providing on the substrate a catalytic agent for converting a non-electroactive agent to an electroactive agent by a catalytic process which consumes oxygen; and
(iii) providing within a polymer matrix on the substrate, an oxygen reservoir, for releasing, in use, oxygen to feed the catalytic process.
18. A method according to claim 10 wherein the conducting substrate comprises a non-metallic conductor such as carbon fibres or metallic conductors including those constructed of noble metals such as Pt, Ag, Au, Ru, Rh, Pd, Re, Os, Ir and combinations thereof.
19. (canceled)
20. (canceled)
21. An electrode according to claim 10 wherein the catalytic agent is selected from oxidase materials.
22. A method according to claim 12 wherein the catalytic agent is selected from glucose oxidase, lactate oxidase, glutamate oxidase and combinations thereof.
23. A method according to claim 10 wherein the oxygen reservoir is constructed from at least one halogenated polymer such as fluorinated or chlorinated polymers for example, perfluoro, perchloro and perfluorochloro polymers.
24. A method according to claim 10 wherein the oxygen reservoir is constructed from oxygen reservoir material dispersed within a polymeric layer, and optionally within discrete areas of the polymeric layer.
25. (canceled)
26. (canceled)
27. A method according to claim 10 wherein the polymer matrix is applied by a non-electrochemical method of application.
28. A method according to claim 16 wherein the polymer matrix is applied by dip-coating or droplet evaporation.
29. A method according to claim 10 wherein the oxygen reservoir is incorporated into the same matrix as the catalytic agent.
30. A method according to claim 10 further comprising employing a cross-linking agent for more securely binding the catalytic agent into the polymer matrix.
31. A method according to claim 10 further comprising employing a stabiliser for the catalytic agent.