# US 12,760,904 B2 · Modular cooking appliance having a hot air oven with a built-in magnetron and a double duty heater > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,760,904 B2 - Document ID: US12760904B2 - Status: Granted - Kind: B2 - Application number: 18/217,005 - Filed: 2023-06-30 - Published: 2023-11-02 - Granted: 2026-10-13 - Earliest claimed: 2020-04-02 - Assignees: Automation Tech, LLC - Applicants: Automation Tech, LLC - Inventors: Philip R. McKee; Andrew Podevels - Web page: https://patentgrep.com/patent/US12760904B2 ## CPC - F24C 7/02: using microwaves - F24C 7/085: {on baking ovens} - F24C: DOMESTIC STOVES OR RANGES (exclusively for solid fuels F24B); DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION ## Abstract A modular cooking apparatus includes a first interchangeable cooking module containing an impingement oven, a second interchangeable cooking module containing a hot air oven with built-in magnetron, and a single power connection for receiving three-phase electrical power. Each oven has a base load and a boost load. A first multiplexor is configured to direct electrical power from a first phase pair of the three-phase electrical power to either the base load or the boost load of the first oven. A second multiplexor is configured to direct electrical power from the first phase pair to the boost load of the first oven or to the boost load of the second oven. The modular cooking apparatus is configured such that either the first multiplexor or the second multiplexor can direct electrical power from the first phase pair to the boost load of the first oven. ## Claims ### Claim 1 A cooking apparatus, comprising: a housing having a single power connection for receiving three-phase electrical power; a first oven contained within said housing, said first oven having a base load and at least one boost load; a second oven contained within said housing, said second oven having a base load and at least one boost load; a first multiplexor configured to direct electrical power from a first phase pair of said three-phase electrical power to said base load of said first oven or to said at least one boost load of said first oven; and a second multiplexor configured to direct electrical power from said first phase pair of said three-phase electrical power to said at least one boost load of said first oven; wherein said cooking apparatus is configured such that either said first multiplexor or said second multiplexor can direct electrical power from said first phase pair to said at least one boost load of said first oven. ### Claim 2 (depends on 1) The cooking apparatus of claim 1, wherein said second multiplexor can direct electrical power from said first phase pair to said at least one boost load of said first oven when said first multiplexor directs electrical power from said first phase pair to said base load of said first oven. ### Claim 3 (depends on 1) The cooking apparatus of claim 1, wherein said first multiplexor can direct electrical power from said first phase pair to said at least one boost load of said first oven when said first multiplexor does not direct electrical power from said first phase pair to said base load of said first oven. ### Claim 4 (depends on 1) The cooking apparatus of claim 1, further comprising a logic gate having a first input coupled to said first multiplexor, a second input coupled to said second multiplexor, and an output coupled to said at least one boost load of said first oven. ### Claim 5 (depends on 4) The cooking apparatus of claim 4, wherein said logic gate comprises an OR gate. ### Claim 6 (depends on 1) The cooking apparatus of claim 1, wherein said first oven comprises a hot air oven having at least one magnetron. ### Claim 7 (depends on 6) The cooking apparatus of claim 6, wherein said base load comprises said at least one magnetron. ### Claim 8 (depends on 7) The cooking apparatus of claim 7, wherein said at least one boost load comprises a boost heater. ### Claim 9 (depends on 8) The cooking apparatus of claim 8, wherein said boost heater is turned on when said hot air oven having at least one magnetron is cooking a food item using said at least one magnetron. ### Claim 10 (depends on 8) The cooking apparatus of claim 8, wherein said at least one boost heater is turned on when said hot air oven having at least one magnetron is not cooking a food item using said at least one magnetron. ### Claim 11 (depends on 1) The cooking apparatus of claim 1 wherein said first oven includes a control module and said first multiplexor is included in said control module. ### Claim 12 (depends on 1) The cooking apparatus of claim 1, further comprising a common control board and said second multiplexor is included in said common control board. ### Claim 13 (depends on 1) The cooking apparatus of claim 1, wherein said base load and said at least one boost load of said second oven are both assigned to a second phase pair of said three-phase electrical power. ### Claim 14 (depends on 1) The cooking apparatus of claim 1, wherein: said housing further comprises a third oven having a base load and at least one boost load; and said base load and said at least one boost load of said third oven are both assigned to a third phase pair of said three-phase electrical power. ### Claim 15 A cooking apparatus, comprising: a housing having a single power connection for receiving three-phase electrical power; a first oven contained within said housing, said first oven having a base load and at least one boost load; a second oven contained within said housing, said second oven having a base load and at least one boost load; a first multiplexor configured to direct electrical power from a first phase pair of said three-phase electrical power to said base load of said first oven or to said at least one boost load of said first oven; and a second multiplexor configured to direct electrical power from said first phase pair of said three-phase electrical power to said at least one boost load of said first oven; wherein said cooking apparatus is configured such that it can turn on said at least one boost load of said first oven using electrical power from said first phase pair regardless of whether electrical power from said first phase pair is being used to turn on said base load of said first oven. ### Claim 16 (depends on 15) The cooking apparatus of claim 15, wherein said first oven comprises a hot air oven having at least one magnetron. ### Claim 17 (depends on 16) The cooking apparatus of claim 16, wherein said base load comprises said at least one magnetron. ### Claim 18 (depends on 17) The cooking apparatus of claim 17, wherein said at least one boost load comprises a boost heater. ### Claim 19 (depends on 18) The cooking apparatus of claim 18, wherein said at least one boost heater is turned on when said hot air oven having at least one magnetron is cooking a food item using said at least one magnetron. ### Claim 20 (depends on 17) The cooking apparatus of claim 17, wherein: said at least one magnetron is turned off; and said at least one boost heater is turned on and provides said base load for said hot air oven having at least one magnetron.