Oven circulating heated air

US8993945B2 · kind B2 · utility

Assignee

• Appliance Scientific, Inc. · US

Inventors

• Philip R. McKee · Frisco, US
• Scott Smith · Richardson, US
• Lee Thomas VanLanen · McKinney, US
• Earl R. Winkelmann · Garland, US

Key dates

• Filing date: May 4, 2011
• Grant date: Mar 31, 2015
• Expiry date: Aug 22, 2033

Classification

• Technology area (CPC G): Physics
• CPC primary: G05D23/20
• WIPO field: Control
• WIPO sector: Instruments

Abstract

An oven which runs on a 20 ampere single phase electrical service includes a cooking chamber comprising a top wall, a bottom wall, a first side wall and a second side wall, at least one microwave generator, at least one set of nozzles, tubes or apertures disposed above a food product disposed within the oven, at least one blower having an RPM in the range between about 3000 to about 4000 at 100 percent velocity, wherein the blower circulates at least a portion of gas from the nozzles, tubes or apertures into the cooking chamber substantially toward the food product and back to the nozzles, tubes or apertures, and a thermal energy source that heats the gas, wherein the heated gas at or near the food product disposed in the cooking chamber exhibits a flow rate of at least about 150 CFM.