US 12,137,510 B2
Power density emission manipulation in a cooking instrument
Shih-Yu Cheng, Union City, CA (US); Dennis Denker, Scottsdale, AZ (US); Zinovy Dolgonosov, San Francisco, CA (US); Carl Grossman, Redwood City, CA (US); and Kuy Mainwaring, Menlo Park, CA (US)
Assigned to Brava Home, Inc., Redwood City, CA (US)
Filed by Brava Home, Inc., Redwood City, CA (US)
Filed on Nov. 5, 2018, as Appl. No. 16/181,269.
Claims priority of provisional application 62/695,755, filed on Jul. 9, 2018.
Claims priority of provisional application 62/582,265, filed on Nov. 6, 2017.
Prior Publication US 2019/0141798 A1, May 9, 2019
Int. Cl. H05B 6/68 (2006.01); H05B 6/64 (2006.01); F27D 21/02 (2006.01)
CPC H05B 6/687 (2013.01) [H05B 6/6408 (2013.01); H05B 6/6435 (2013.01); H05B 6/645 (2013.01); H05B 6/6494 (2013.01); F27D 2021/026 (2013.01)] 22 Claims
OG exemplary drawing
 
1. A cooking instrument comprising:
a power supply electrically coupled to an external power source having an upper power draw limit;
a heating system electrically coupled to the power supply, the heating system comprising one or more heating elements, with each said heating element including a wavelength controllable filament assembly having an emission surface that changes over time, wherein the wavelength controllable filament assembly is configured to generate electromagnetic emission to cook;
a cooking chamber adapted to store food at least when the heating system is operational;
a computer readable memory storing a mapping function specifying one or more parameters associated with driving the heating system to achieve a quantifiable cooking result, wherein the mapping function provides a mapping between power applied to a first heating element of the one or more heating elements and a corresponding emission surface area of the first heating element; and
a control system configured to select the quantifiable cooking result and, during cooking, control, driving signals provided to the heating system to achieve the quantifiable cooking result based at least in part on the changing emission surface area of the first heating element in accordance with the mapping function, wherein controlling the driving signals thereby increases power density of the electromagnetic emission that the food is exposed to in a first mode of operation while the heating system consumes substantially equivalent power from the external power source as compared to another mode of operation of the heating system and wherein increasing the power density includes managing temperature of the one or more heating elements in the heating system.