Thermal/convection oven including halogen lamps

• US 6,521,870 B2
• Filed: 01/11/2001
• Issued: 02/18/2003
• Est. Priority Date: 01/11/2001
• Status: Expired due to Term

• Current Assignee: Haier US Appliance Solutions, Inc. DBA GE Appliances (Haier Group Company)
• Original Assignee: General Electric Company
• Inventors: Nolan, Kevin Farrelly, Wagner, Don R., Graves, Todd Vincent
• Primary Examiner(s): PELHAM, JOSEPH MOORE
• Application Number:
  US09/758,516
• Publication Number:
  US 20020088790A1
• Time in Patent Office: 768 Days
• Field of Search: 219/400, 219/411-414, 219/680, 219/681, 219/685
• US Class Current: 219/400
• CPC Class Codes: F24C 15/325 electrically-heated
• CPC Class Codes: H05B 6/6485 further combined with convection heating

Abstract

The present invention relates to an oven that includes, in an exemplary embodiment, a cooking cavity assembly, a controller, a halogen lamp and fan assembly, and a vent assembly. The halogen lamp and fan assembly, sometimes referred to herein as a convection module, includes one or more halogen lamps and a fan for circulating heat from the lamps into the cooking cavity. The oven can be operated in two modes, namely, thermal emulation and customized cooking. In the thermal emulation mode, the oven is pre-heated to a target temperature by lamps cycling on and off under the control of the controller. Once the target temperature is reached, the user places the food into the cooking cavity and the food is cooked for the same amount of time as in a conventional thermal oven. In the customized cooking mode, food is placed in cooking cavity for the entire cooking cycle, including pre-heat.

Claims

1. An oven comprising:

a cooking cavity;

a convection module comprising at least one halogen lamp;

a convection fan for drawing air from said cooking cavity and blowing air over said halogen lamp and into said cavity; and

a controller coupled to, and controlling energization of, said convection module and said fan in a custom cooking mode dependant upon a starting temperature of the cooking cavity and cooking energy output of said convection module in preheating said cooking cavity.

2. An oven in accordance with claim 1 wherein said convection module comprises four halogen lamps.

3. An oven in accordance with claim 1 wherein said controller operates said oven in a plurality of modes.

4. An oven in accordance with claim 1 further comprising an RF generation module for supplying microwave energy to said cooking cavity.

5. An oven in accordance with claim 4 wherein said controller operates said oven in a plurality of modes, at least one of said modes comprising a microwave only mode, a convection mode, and a combination mode.

6. An oven in accordance with claim 1 further comprising a temperature sensor in thermal communication with said cooking cavity.

7. An oven comprising:

a cooking cavity;

a plurality of modules for delivering energy into said cooking cavity, said energy comprising heat and microwave energy; and

a control operatively connected to said modules for controlling delivery of energy to said cooking cavity, said control configured to operate said modules in a microwave cooking mode, a convection bake custom cooking mode wherein cooking time is incremented or decremented based upon an amount of cooking energy introduced into said cavity in a preheat operation, and a combination mode.

8. An oven in accordance with claim 7 wherein said plurality of modules comprise an RF generation module and a convection module.

9. An oven in accordance with claim 7 wherein RF generation module comprises a magnetron.

10. An oven in accordance with claim 7 wherein said convection module comprise at least one halogen lamp.

11. An oven in accordance with claim 7 wherein in said combination mode, said control is configured to energize said convection module and said RF generation module.

12. An oven in accordance with claim 7 wherein in said convection bake mode, said control is configured to energize said convection module.

13. A method for operating an oven including a microcomputer, an RF generation module and a convection module for delivering cooking energy into an oven cavity, said method comprising the steps of:

obtaining at least one input from a user indicative of whether the oven is to operate in a microwave mode, a convection bake mode, or a combination mode;

energizing the RF generation module and the convection module in accordance with the user input; and

when the convection bake mode is selected, adjusting an energization time of the convention module based upon a starting temperature condition of the oven cavity and an amount of time to preheat the oven cavity, thereby accounting for cooking energy attributable to oven preheating.

14. A method in accordance with claim 13 wherein if the oven is to operate in the microwave mode, then the RF generation module is energized.

15. A method in accordance with claim 13 wherein if the oven is to operate in the convection/bake mode, then the convection module is energized.

16. A method in accordance with claim 13 wherein if the oven is to operate in the combination mode, then the RF generation module and the convection module are energized.