Convection cooking appliance with rapid preheat system
US6388235B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 30, 2001 |
| Grant date | May 14, 2002 |
| Priority date | — |
| Expiry date | Oct 30, 2021 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF24C7/087
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
A rapid preheat control system, provided in a cooking appliance having a oven cavity, bake and broil elements for heating the oven cavity and a fan for developing an air flow current within the oven cavity, functions to actuate the broil element a higher percentage of time than the bake element during a preheat operation in order to decrease the required time to preheat the oven cavity for a baking operation, while specifically avoiding the need to increase the overall power rating of the cooking appliance. In one preferred embodiment, 100% of the heat emanates from the broil element, while the convection fan is operated either continuously or in a pulsating manner to quickly establish an even heat distribution in the oven cavity. In other embodiments, a portion of the preheat can come from the bake element, but simply in a much lower percentage than the broil element.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.