Method for preheating an oven appliance

• US 9,119,231 B2
• Filed: 11/30/2012
• Issued: 08/25/2015
• Est. Priority Date: 11/30/2012
• Status: Active Grant

• Current Assignee: Haier US Appliance Solutions, Inc. DBA GE Appliances (Haier Group Company)
• Original Assignee: General Electric Company
• Inventors: Johnson, Eric Scott, Gladhill, Matthew David
• Primary Examiner(s): PASCHALL, MARK H
• Application Number:
  US13/690,232
• Publication Number:
  US 20140151362A1
• Time in Patent Office: 998 Days
• Field of Search: 219/497, 219/494, 219/492, 219412-414, 219483-485
• US Class Current: 1/1
• CPC Class Codes: F24C 7/085 on baking ovens
• CPC Class Codes: H05B 1/0263 Ovens

Abstract

An oven appliance and a method for preheating the same are provided. The oven appliance includes a broil heating element, a bake heating element, and a convection heating assembly with a convection heating element or a fan or both. The method includes initiating a preheat cycle having a first phase and a second phase. During the second phase of the preheat cycle, a power output of the convection heating element is reduced or an angular velocity of the fan is decreased or both.

Claims

1. A method for preheating an oven appliance, the oven appliance including a cabinet that defines a cooking chamber for receipt of food items for cooking, the cooking chamber extending between a top portion and bottom portion, the oven appliance also including a bake heating element positioned adjacent the bottom portion of the cooking chamber, the oven appliance further including a broil heating element positioned adjacent the top portion of the cooking chamber, the oven appliance also including a convection heating assembly having a fan and a convection heating element, the convection heating assembly configured for selectively urging a flow of heated air into the cooking chamber, the method comprising:

initiating a preheat cycle of the oven appliance, the cooking chamber changing from a first temperature to a second temperature during the preheat cycle, the second temperature being greater than the first temperature, the preheat cycle having a first phase and a second phase;

operating at least one of the convection heating element, the broil heating element, and the bake heating element for the first phase of the preheat cycle of the oven appliance;

utilizing the convection heating element during the second phase of the preheat cycle of the oven appliance; and

reducing a power output of the convection heating element over a period of time to about a steady-state power output during the second phase of the preheat cycle.

2. The method of claim 1, wherein the power output of the convection heating element is reduced during said step of reducing by adjusting a duty cycle of the convection heating element.

3. The method of claim 1, wherein the convection heating element includes a TRIAC control for adjusting the power output of the convection heating element, wherein the power output of the convection heating element is reduced during said step of reducing with the TRIAC control.

4. The method of claim 1, further comprising:

running the fan of the convection heating assembly during the second phase of a preheat cycle of the oven appliance.

5. The method of claim 4, further comprising decreasing an angular velocity of the fan over the period of time during the second phase of the preheat cycle.

6. The method of claim 1, wherein the power output of the convection heating element is reduced in order to maintain a substantially constant power input to food items within the cooking chamber during said step of reducing.

7. The method of claim 1, further comprising increasing or decreasing the Power output of at least one of the bake heating element and the broil heating element over the period of time during the second phase of the preheat cycle.

8. A method for preheating an oven appliance, the oven appliance including a cabinet that defines a cooking chamber for receipt of food items for cooking, the cooking chamber extending between a top portion and bottom portion, the oven appliance also including a bake heating element positioned adjacent the bottom portion of the cooking chamber, the oven appliance further including a broil heating element positioned adjacent the top portion of the cooking chamber, the oven appliance also including a convection heating assembly having a fan, the convection heating assembly configured for selectively urging a flow of heated air into the cooking chamber, the method comprising:

initiating a preheat cycle of the oven appliance, the cooking chamber changing from a first temperature to a second temperature during the preheat cycle, the second temperature being greater than the first temperature, the preheat cycle having a first phase and a second phase;

operating at least one of the broil heating element and the bake heating element for the first phase of the preheat cycle of the oven appliance;

running the fan of the convection heating assembly during the second phase of the preheat cycle of the oven appliance; and

decreasing an angular velocity of the fan over a period of time during the second phase of the preheat cycle.

9. The method of claim 8, wherein the convection heating assembly further includes a convection heating element, the method further comprising activating the convection heating element for the second phase of the preheat cycle of the oven appliance.

10. The method of claim 9, further comprising reducing a power output of the convection heating element over a period of time during the second phase of the preheat cycle.

11. The method of claim 10, wherein the power output of the convection heating element is reduced over the period of time to about a steady-state power output during said step of reducing.

12. The method of claim 8, wherein the angular velocity of the fan is reduced over the period of time to about a steady-state angular velocity during said step of decreasing.

13. The method of claim 8, wherein the angular velocity of the fan is reduced during said step of decreasing by adjusting a duty cycle of the fan.

14. The method of claim 8, wherein the fan includes a TRIAC control for adjusting the angular velocity of the fan, wherein the angular velocity of the fan is reduced during said step of decreasing with the TRIAC control.

15. The method of claim 8, wherein the angular velocity of the fan is reduced in order to maintain a substantially constant power input to food items within the cooking chamber during said step of decreasing.

16. The method of claim 8, further comprising increasing or decreasing the power output of at least one of the bake heating element and the broil heating element over the period of time during the second phase of the preheat cycle.

17. An oven appliance comprising:

a cabinet that defines a cooking chamber for receipt of food items for cooking, the cooking chamber extending between a top portion and bottom portion;

a temperature sensor configured for measuring a temperature of the cooking chamber;

a bake heating element positioned adjacent the bottom portion of the cooking chamber;

a broil heating element positioned adjacent the top portion of the cooking chamber;

a convection heating assembly having a fan, the convection heating assembly configured for selectively urging a flow of heated air into the cooking chamber; and

a controller in communication with said temperature sensor, said bake heating element, said broil heating element, and said convection heating assembly, said controller configured for;

initiating a preheat cycle of the oven appliance, the cooking chamber changing from a first temperature to a second temperature during the preheat cycle, the second temperature being greater than the first temperature, the preheat cycle having a first phase and a second phase;

operating at least one of the broil heating element and the bake heating element for the first phase of the preheat cycle of the oven appliance;

running the fin of the convection heating assembly during the second phase of the preheat cycle of the oven appliance; and

reducing an angular velocity of the fan over a period of time via a TRIAC control during the second phase of the preheat cycle.

18. The oven appliance of claim 17, wherein the controller is further configured for increasing or decreasing a power output of at least one of the bake heating element or the broil heating element over the period of time during the second phase of the preheat cycle.

19. A method for preheating an oven appliance, the oven appliance including a cabinet that defines a cooking chamber for receipt of food items for cooking, the cooking chamber extending between a top portion and bottom portion, the oven appliance also including a bake heating element positioned adjacent the bottom portion of the cooking chamber, the oven appliance further including a broil heating element positioned adjacent the top portion of the cooking chamber, the oven appliance also including a convection heating assembly having a fan and a convection heating element, the convection heating assembly configured for selectively urging a flow of heated air into the cooking chamber, the method comprising:

initiating a preheat cycle of the oven appliance, the cooking chamber changing from a first temperature to a second temperature during the preheat cycle, the second temperature being greater than the first temperature, the preheat cycle having a first phase and a second phase;

operating at least one of the convection heating element, the broil heating element, and the bake heating element for the first phase of the preheat cycle of the oven appliance;

running the fan of the convection heating assembly during the second phase of the preheat cycle of the oven appliance; and

decreasing an angular velocity of the fan over a period of time during the second phase of the preheat cycle.