Cooking hob with edge lighting indicating burner unit use

Patent metadata

Field	Value
Publication number	US-11246190-B2
Application number	US-201916406306-A
Country	US
Kind code	B2
Filing date	May 8, 2019
Priority date	May 8, 2019
Publication date	Feb 8, 2022
Grant date	Feb 8, 2022

Abstract

A cooking hob includes a cooktop defining a major surface extending between a plurality of sides and a plurality of edge surfaces extending away from the major surface at respective sides thereof and a plurality of burner units disposed at the major surface within respective sections of the major surface. The cooktop further includes a lighting assembly affixed with the cooktop opposite the major surface and extending adjacent at least two of the sections of the major surface and including a plurality of lighting elements respectively exposed at respective portions of the edge surfaces corresponding with the sections of the major surface.

First claim

What is claimed is:

1. A cooking hob, comprising:
a cooktop defining a major surface extending between a plurality of sides and a plurality of edge surfaces extending away from and perpendicular to the major surface at respective sides thereof;
a plurality of burner units disposed at the major surface within respective sections of the major surface; and
a lighting assembly affixed with the cooktop opposite the major surface, extending adjacent at least two of the sections of the major surface and including a plurality of lighting elements, the lighting assembly including a light guide extending along portions of the inner surface adjacent at least two of the plurality of edge surfaces and defining at least two outer faces extending perpendicular to the major surface and generally contiguously with the at least two of the plurality of edge surfaces, respectively, and the lighting elements being respectively directed outwardly through respective ones of the outer faces adjacent portions of the edge surfaces corresponding with the sections of the major surface.

2. The cooking hob of claim 1 , wherein:
the cooktop is of a glass-ceramic substrate, the major surface and edge surfaces being defined thereon, and further defining an inner surface opposite the major surface; and
the lighting assembly is affixed with the cooktop adjacent the inner surface.

3. The cooking hob of claim 2 , wherein:
and
the plurality of lighting elements are spaced inwardly of the outer faces of the light guide.

4. The cooking hob of claim 2 , further including a masking layer extending along portions of the lower surface adjacent respective ones of the at least two of the plurality of edge surfaces, wherein:
the plurality of lighting elements are positioned beneath the masking layer so as to be aligned therewith in a direction normal to the lower surface and to block light emanating from the lighting elements from passing through the cooktop such that the light is visible only through the outer faces of the light guide.

5. The cooking hob of claim 4 , wherein the masking layer defines a diffusing surface disposed toward the plurality of lighting elements.

6. The cooking hob of claim 2 , wherein the plurality of burner units are induction heating units and are positioned adjacent the lower surface.

7. The cooking hob of claim 1 , wherein each of the plurality of lighting elements are light-emitting diodes included in an arrangement of interconnected light-emitting diodes that extends through the at least two of the sections of the major surface with respective pluralities of the light-emitting diodes exposed at the respective portions of respective ones of the plurality of edge surfaces corresponding with the sections of the major surface.

8. The cooking hob of claim 1 , wherein at least one of the sections of the major surface is located in a corner of the major surface such that respective portions of two adjacent edge surfaces correspond with respective ones of the sections of the major surface.

9. The cooking hob of claim 8 , wherein four of the sections of the major surface are located in respective corners of the major surface such that respective portions of four edge surfaces correspond with two each of the sections of the major surface.

10. The cooking hob of claim 9 , wherein at least one additional section of the major surface is located remote from at least two adjacent corners of the major surface such that a respective portion of only one of the plurality of edge surfaces corresponds with the at least one additional section.

11. The cooking hob of claim 1 , wherein:
the cooktop defines four sides with four corresponding edge surfaces;
the sections of the major surface are respectively adjacent and bounded by one of the four sides; and
the lighting assembly extends adjacent each of the four sides with respective ones of the plurality of lighting elements respectively exposed at portions of each of the edge surfaces.

12. The cooking hob of claim 1 , further including a controller for:
selectively activating at least one of the plurality of burner units for heating a cooking article on a corresponding section of the major surface; and
selectively causing illumination of at least one of the lighting elements exposed on the portion of the one of the plurality of edge surfaces respectively corresponding with the section of the major surface when the at least one of the plurality of burner units is activated.

13. A cooking hob, comprising:
a cooktop defining a major surface extending between a plurality of sides with a corresponding plurality of edges bounding the major surface;
a plurality of burner units disposed at the major surface within respective sections of the major surface;
a lighting assembly extending along at least one of the plurality of edges and including a light guide extending along at least one of the plurality of edges past at least two sections of the major surface, the light guide defining at least two outer faces extending perpendicular to the major surface away from and aligned with the edge, the light guide further including a plurality of lighting elements and being configured to direct light from the plurality of lighting elements outward through the outer face; and
a controller selectively activating ones of the plurality of burner units and causing the lighting assembly to illuminate a respective portion of at least one of the edges bounding at least one of the sections of the major surface corresponding with the activated ones of the plurality of burner units.

14. The cooking hob of claim 13 , wherein the controller selectively activates the ones of the plurality of burner units according to a user input including at least one of a burner unit location and a heating level.

15. The cooking hob of claim 14 , wherein the controller illuminates the respective portion of the at least one of the outer faces of the light guide corresponding with the activated ones of the plurality of burner units corresponding with the burner unit location of the user input and at one of a brightness or color corresponding with the heating level of the user input.

16. The cooking hob of claim 13 , wherein:
each of the plurality of burner units are induction heating coils;
at least two of the plurality of burner units are disposed at the major surface within one of the respective sections; and
the controller selectively activates the at least two burner units in the one of the respective sections simultaneously.

17. The cooking hob of claim 16 , wherein:
the at least two of the plurality of burner units are disposed at the major surface within respective individual subsections of the respective section of the major surface; and
the controller selectively activates one of the at least two burner units and causes the lighting assembly to illuminate a respective portion of at least one of the outer surface of the light guide along the portions of the edges bounding at least one of the subsections corresponding with the activated one of the two burner units based on at least one of a user input or a determination that a cooking article size is smaller than the respective section by a predetermined amount.

18. The cooking hob of claim 13 , wherein the cooktop further defines a plurality of edge surfaces extending away from respective ones of the edges of the major surface; and
the lighting assembly is affixed with the cooktop opposite the major surface and extends adjacent at least two of the sections of the major surface, wherein at least two of the plura

Assignees

• Whirlpool Co

Inventors

• De Morais Fernanda M
• Monteiro Monica C
• Oening Thayna
• Stefanello Nilvania
• Van Faasen Joel Graham

Classifications

• H05B3/746

  Protection, e.g. overheat cutoff, hot plate indicator · CPC title

• H05B6/1218 Primary

  with arrangements using lights for heating zone state indication · CPC title

• F24C15/10 Primary

  Tops, e.g. hot plates; Rings (cover lids or splash guards F24C15/12; spillage trays or grooves F24C15/14) · CPC title

• H05B6/062

  for cooking plates or the like · CPC title

• H05B2213/05

  Heating plates with pan detection means · CPC title