# US 11,026,535 B2 · Oven with machine learning based algorithm selection strategy > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,026,535 B2 - Document ID: US11026535B2 - Status: Granted - Kind: B2 - Application number: 15/810,706 - Filed: 2017-11-13 - Published: 2018-05-31 - Granted: 2021-06-08 - Earliest claimed: 2016-11-30 - Assignees: Illinois Tool Works Inc. - Applicants: Illinois Tool Works Inc. - Inventors: Giorgio Grimaldi; Christopher Hopper; Michele Sclocchi; Joshua M. Linton - Web page: https://patentgrep.com/patent/US11026535B2 ## CPC - A47J 27/004: {with integral electrical heating means (drinking cups with integral heating means A47J36/2466)} - A47J 36/00: Parts, details or accessories of cooking-vessels (A47J27/00 - A47J33/00 take precedence insofar as these parts, details or accessories are restricted to a particular kind of cooking-vessel provided for in a single one of these groups) - A47J 36/321: {the electronic control being performed over a network, e.g. by means of a handheld device} - H05B 6/6435: {Aspects relating to the user interface of the microwave heating apparatus} - H05B 6/6473: {combined with convection heating (H05B6/6485 takes precedence)} - H05B 6/686: {Circuits comprising a signal generator and power amplifier, e.g. using solid state oscillators} - H05B 6/705: {using microwave tuning} - Y02B 40/00: Technologies aiming at improving the efficiency of home appliances, e.g. induction cooking or efficient technologies for refrigerators, freezers or dish washers - A47J: KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES - H05B: ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL - Y02B: CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS ## Abstract An oven may include a cooking chamber configured to receive a food product, an EM heating system configured to provide EM energy into the cooking chamber using solid state electronic components, and control electronics configured to control the EM heating system. The control electronics are configured to enable user selection of a cooking program associated with cooking the food product. The control electronics select a first algorithm to direct application of the EM energy to the food product. The control electronics perform a learning process to receive feedback on execution of the cooking program during execution of the cooking program according to the first algorithm. Responsive to detecting a trigger event during the learning process, the control electronics are configured to select a second algorithm that is different from the first algorithm to direct application of the EM energy to the food product during execution of the cooking program. ## Claims ### Claim 1 An oven comprising: a cooking chamber configured to receive a food product; an electromagnetic (EM) heating system configured to provide EM energy into the cooking chamber using solid state electronic components; and control electronics configured to control the EM heating system, wherein the control electronics are configured to enable user selection of a cooking program associated with cooking the food product, wherein the control electronics are configured to select a first algorithm to direct application of the EM energy to the food product, wherein the control electronics are configured to interrupt the first algorithm to perform a learning process interrupting the cooking process and to receive feedback on execution of the learning process during execution of the cooking program according to the first algorithm, wherein, responsive to detecting a trigger event during the learning process, the control electronics are configured to select a second algorithm that is different from the first algorithm to direct application of the EM energy to the food product during execution of the cooking program, wherein the first algorithm defines a first power level and a first combination of frequency and phase for application of the EM energy into the cooking chamber, and the second algorithm defines a second power level and a second combination of frequency and phase for application of the EM energy into the cooking chamber, and wherein the learning process comprises applying, during a period of the interrupting of the cooking process, a plurality of frequencies and detecting an efficiency measure relative to absorption of the frequencies into the food product, and the feedback comprises a value indicative of absorption of the frequencies associated with the learning process into the food product. ### Claim 2 (depends on 1) The oven of claim 1, wherein the learning process is repeated multiple times during the cooking program. ### Claim 3 An oven comprising: a cooking chamber configured to receive a food product; an electromagnetic (EM) heating system configured to provide EM energy into the cooking chamber using solid state electronic components; and control electronics configured to control the EM heating system, wherein the control electronics are configured to enable user selection of a cooking program associated with cooking the food product, wherein the control electronics are configured to select a first selected algorithm to direct application of the EM energy to the food product, wherein the control electronics are configured to interrupt the first algorithm to perform a learning process interrupting the cooking process and to receive feedback on execution of the learning process during execution of the cooking program according to the first selected algorithm, wherein, responsive to detecting a trigger event during the learning process, the control electronics are configured to select a second selected algorithm to direct application of the EM energy to the food product during execution of the cooking program, wherein the first selected algorithm and the second selected algorithm are different algorithm types, the first selected algorithm being selected from among a plurality of candidate algorithms of a first type, and the second selected algorithm being selected from among a plurality of candidate algorithms of a second type, and wherein the learning process comprises applying, during a period of the interrupting of the cooking process, a plurality of frequencies and detecting an efficiency measure relative to absorption of the frequencies into the food product, and the feedback comprises a value indicative of absorption of the frequencies associated with the learning process into the food product. ### Claim 4 (depends on 3) The oven of claim 3, wherein the algorithm types are classified by a temporal association with a stage of execution of the cooking program such that the first selected algorithm is associated with a first stage of cooking the food product and the second selected algorithm is associated with a second stage of cooking the food product, and the trigger event comprises detecting a transition from the first stage to the second stage. ### Claim 5 (depends on 3) The oven of claim 3, wherein the algorithm types are classified based on efficiency of absorption or based on uniformity of EM energy application in the cooking chamber. ### Claim 6 (depends on 3) The oven of claim 3, wherein the algorithm types are differentiated based on one or more of cooking power, frequency parameters and phase parameters for application of the EM energy. ### Claim 7 (depends on 1) The oven of claim 1, wherein the trigger event is indicative of a change in property of the food product, wherein the change in property includes a change in composition, change in geometry, change in orientation, or change in internal or external temperature of the food product. ### Claim 8 (depends on 1) The oven of claim 1, wherein the trigger event comprises elapsing of a predetermined period of time. ### Claim 9 (depends on 8) The oven of claim 8, wherein the trigger event is cyclic. ### Claim 10 (depends on 1) The oven of claim 1, further comprising a convective heating system configured to provide heated air into the cooking chamber, wherein the control electronics are configured to control the convective heating system and the EM heating system, wherein the cooking program includes multiple stages with different cooking objectives in at least two stages, and wherein the cooking program defines different algorithms and different controls for the convective heating system for the at least two stages. ### Claim 11 Control electronics configured to control an electromagnetic (EM) heating system configured to provide EM energy into a cooking chamber of an oven using solid state electronic components, the control electronics comprising a memory and processor, the memory storing a plurality of cooking programs for execution by the processor, wherein the control electronics are configured to enable user selection of a cooking program associated with cooking a food product in the cooking chamber, wherein the control electronics are configured to select a first algorithm to direct application of the EM energy to the food product, wherein the control electronics are configured to interrupt the first algorithm to perform a learning process interrupting the cooking process and to receive feedback on execution of the learning process during execution of the cooking program according to the first algorithm, wherein, responsive to detecting a trigger event during the learning process, the control electronics are configured to select a second algorithm that is different from the first algorithm to direct application of the EM energy to the food product during execution of the cooking program, wherein the first algorithm defines a first power level and a first combination of frequency and phase for application of the EM energy into the cooking chamber, and the second algorithm defines a second power level and a second combination of frequency and phase for application of the EM energy into the cooking chamber, and wherein the learning process comprises applying, during a period of the interrupting of the cooking process, a plurality of frequencies and detecting an efficiency measure relative to absorption of the frequencies into the food product, and the feedback comprises a value indicative of absorption of the frequencies associated with the learning process into the food product. ### Claim 12 (depends on 11) The control electronics of claim 11, wherein the learning process is repeated multiple times during the cooking program. ### Claim 13 (depends on 11) The control electronics of claim 11, wherein the first algorithm and the second algorithm are different algorithm types. ### Claim 14 (depends on 13) The control electronics of claim 13, wherein the algorithm types are classified by a temporal association with a stage of execution of the cooking program. ### Claim 15 (depends on 13) The control electronics of claim 13, wherein the algorithm types are classified based on efficiency of absorption or based on uniformity of EM energy application in the cooking chamber. ### Claim 16 (depends on 13) The control electronics of claim 13, wherein the algorithm types are differentiated based on one or more of cooking power, frequency parameters and phase parameters for application of the EM energy. ### Claim 17 (depends on 11) The control electronics of claim 11, wherein the trigger event is indicative of a change in property of the food product, wherein the change in property includes a change in composition, change in geometry, change in orientation, or change in internal or external temperature of the food product. ### Claim 18 (depends on 11) The control electronics of claim 11, wherein the trigger event comprises elapsing of a predetermined period of time, and wherein the trigger event is cyclic.